Showing posts with label Connecticut. Show all posts
Showing posts with label Connecticut. Show all posts

Serving New England with Premium Valve Automation Systems

Piping Specialties is your preferred valve automation specialist in Maine, Vermont, Massachusetts, New Hampshire, Rhode Island, and Connecticut. Piping Specialties handles projects of all sizes for manual and automated valves, providing specification development, design, engineering, assembly, and testing of valve packages. Using CAD software, our associates can give complete drawing packages and plans to ensure the automated valve solutions we provide will fit your applications and meet specifications.

Piping Specialties has established itself as one of New England's premier valve automation centers by combining years of experience with the industry's top manufacturers of valves, valve actuators, and controls. PSI's application experience, engineering know-how, and highly trained technicians make them an easy choice to be your preferred valve automation partner for the design, fabrication, assembly, and installation of any valve actuation/automation project.

Choose Piping Specialties for all your valve automation needs. For more information, visit https://psi-team.com or call 800-223-1468.

New Partnership in New England: Habonim Valves and Actuators

New England - Habonim Valves and Actuators

Habonim designs and manufactures floating, trunnion, cryogenic, high pressure, and metal seated ball valves. Additionally, they manufacture pneumatic actuators and complex manifold assemblies. Their products excel in the most demanding industries, including oil and gas, chemical, petrochemical, pharmaceutical, and mining. Habonim products comply with the strictest industrial and international standards with a constant focus on safety and environmental considerations.

Piping Specialties is pleased to partner with such a well-established and high-quality manufacturer. 

Piping Specialties / PSI Controls
https://psi-team.com
800-223-1468

Replace Inaccurate and High Maintenance Displacer Level Controls With RF Admittance Technology

Replace Inaccurate and High Maintenance Displacer Level

 Cost Effective Alternative to Displacer Level Measurements

THE PROBLEM

  • Displacer accuracy is dependent on the specific gravity of a fluid. Varying specific gravities and “off spec” product result in significant measurement errors.
  • Coating build-up on the displacer body produces errors.
  • “Blowdowns” to clean displacer internals and cages is time consuming and expensive.
  • Rebuilds due to component wear add significantly to the total cost of ownership.
  • Interface measurements are more sensitive to slight specific gravity variances and result in separator throughput lower than the design specification.

THE SOLUTION

  • AMETEK Drexelbrook Radio Frequency (RF) Admittance technology eliminates all of the inherent problems with Displacer technology level measurement.
  • RF is immune to changes in specific gravity, density, temperature, and pressure.
  • Accuracies to 1⁄4 inch of level in short span installations.
  • No moving parts to wear, No periodic maintenance.
  • Replacement cost differentials covered by eliminating one rebuild.

Piping Specialties / PSI Controls
https://psi-team.com
800-223-1468


NS Series NSF/ANSI 61 & 372 Certified Ball and Butterfly Valves

NS Series

The NS Series floating ball valves and NS Series butterfly valves from A-T Controls are NSF 61 (Drinking Water System Components- Health Effects) and NSF 372 certified (Drinking Water System Components- Lead Content). NSF 61 means that NS Series valves are certified in water treatment, water purification, potable water, and water distribution systems (Underwriters Laboratories) and meet North American lead content criteria for “lead-free” plumbing.

Get the Product Guide Here

Piping Specialties / PSI Controls
https://psi-team.com
800-223-1468

The Azbil AX24R Reduced Bore Vortex Flowmeter

EXTENDED MEASURING RANGE FOR LOWER FLOW RATES

Much of the measuring range of a standard vortex flowmeter is at higher fluid velocities. Because of this, measurements at low flow conditions may be missed due to the low flow cutoff. To remedy this issue, users often install pipe reducers and a smaller than line size vortex meter to increase fluid velocities through the meter. The Azbil AX24R reduced bore vortex flowmeter has integrated reducing flanges, eliminating the need for separate pipe reducers and spool pieces. This integrated reduction extends the measuring range to capture lower flow rates.

CAPTURES STEAM FLOW IN BOTH HIGH AND LOW DEMAND SEASONS

Steam usage in heating systems can vary widely based on seasonal demands. These systems are commonly sized with the high demand season (colder weather) in mind, and little thought is given to the low demand season (warmer weather). This leads to a situation where steam flowmeters are oversized and may miss flow measurements at low flow conditions. AX24R reduced bore vortex flowmeters have an extended low flow measuring range, capturing both high and low demand seasons.

REDUCED INSTALLATION COSTS

Like most flowmeters, vortex flowmeters have requirements for unobstructed upstream and downstream piping lengths to ensure a proper flow profile through the meter. Adding pipe reducers adds cost and complexity to the piping design since those unobstructed piping lengths are required before and after the pipe reducers.

The AX24R reduced bore vortex flowmeter has integrated reducing flanges, eliminating the need for separate pipe reducers and spool pieces. Drastically reducing both the complexity and cost of the meter installation.

SAME FACE-TO-FACE DIMENSION AS A STANDARD VORTEX METER

AX24R reduced bore vortex flowmeters have the same face-to-face dimension as a standard AX24 flowmeter for pressure classes up to ANSI 600. So if process conditions change, the meter body size can be changed without any costly piping modifications. This is especially useful in project planning, as it allows for flexibility into the future.

For more information on the Azbil AX24R in New England, contact Piping Specialties / PSI Controls. Call 800-223-1468 or visit https://psi-team.com.

The AMETEK Drexelbrook Impulse Guided Wave Radar Level Transmitter

Drexelbrook Impulse

The Drexelbrook Impulse is a guided wave radar (TDR) that measures all liquids and slurries' overall level and other volumetric measures. When competitive water sensors fail, the Impulse continues to provide accurate values. 

The Drexelbrook Impulse is a two-wire guided wave radar that uses field-proven TDR level (Time Domain Reflectometry) technology to produce accurate Total Level, Distance, and Volumetric outputs on all liquids and slurries. 

The Impulse handles even the most challenging level measuring applications. It will continue to give dependable and accurate measurements even in the presence of disturbances such as agitated or uneven surfaces, foam, or probe coating. Changes in the density and dielectric characteristics, dusts, mist, and turbulence do not affect it. When other water level sensors fail, the Impulse continues to measure. 

This water level sensor is a perfect replacement for costly mechanical dispenser systems, with a wide range of probe types and material possibilities for various applications. 

This guided wave radar is simple to use for any user due to its simple navigation, push-button setups, and HART connections. It only takes a few minutes to install. Choose your level measuring type and language, and the Impulse is ready to use. 

The Impulse guided wave radar is intrinsically safe, explosion-proof, and non-incendive, and it does not require calibration or level changes.

Additionally, Drexelbrook recently introduced an enlarged coaxial sensor for The Impulse GWR. The new 1.66" (42mm) diameter probe provides reliable accuracy within high viscosity liquids. The new enlarged coaxial sensor option for The Impulse GWR allows the material to flow off the sensor easily when used with viscous fluids.

Piping Specialties / PSI Controls
https://psi-team.com
800-223-1468

Industrial Process and Commercial Pressure Gauge Selection

Industrial Process and Commercial Pressure Gauges

Download the US Gauge Product Selection Guide from this link.

Pressure gauges are ubiquitous in practically all industries on machines all around the world. At the same time, there are millions of different combinations of shapes, sizes, options, and materials. It's imperative to follow these five application factors for safe use and extended product life.

Process Media

Because direct contact of the sensing element to the process media is possible, any caustic media, particle media, or media that can harden and clog the pressure gauge element, must be avoided. Using a direct connection and Bourdon tube sensor is satisfactory for a non-clogging, non-corrosive medium. Use a diaphragm seal for process media that could cause blockage or be corrosive.

Temperature of the Process Media

Very hot media, such as steam or hot water, can raise the internal temperature of the gauge, resulting in failure or a dangerous state. For high-temperature applications, use a gauge "siphon" or diaphragm seal.

Environment and Ambient Operating Temperature

It is critical to understand the rated ambient environment for any instrument. Elevated ambient temperatures, dampness, vibration, and corrosive environments can all impact accuracy, calibration, and safety. If oxidizing or reducing atmospheres exist, select the appropriate case and mechanism materials, and consider installing supplementary devices, such as remote diaphragm seals, to move the gauge.

The Potential for Severe Pressure Fluctuations

The addition of pressure restrictors, snubbers, or liquid-filling will increase the service life of the pressure gauge in applications where dramatic line pulsations or high over-pressure conditions are possible.

Installation Orientation and Connection Type

Bottom (radial) and rear connectors are standard on pressure gauges. NPT (National Pipe Thread Taper) threaded connections are the most common. However, numerous different process connections are available, including straight threads, metric threads, and specialized fittings. Make sure you understand how the gauge is connected. Pressure gauges should almost always be upright when installed.

Piping Specialties / PSI Controls is standing by, ready to help you apply the correct pressure gauge for your application. Call us at 800-223-1468 for more information on pressure gauges.

Piping Specialties / PSI Controls - New England's Premier Valve and Instrumentation Source

Piping Specialties, Inc. was created in 1975 to provide industrial users in the Northeast with specialty valves and mechanical products and unsurpassed customer service. Piping Specialties' customer base and product offerings have grown steadily and sustainably over the years.  PSI Controls provides system design, sales, and service of process controls and instrumentation. PSI Controls offer a broad range of engineering expertise and experience in applying automated valves and process instrumentation in the most demanding applications.

Piping Specialties / PSI Controls

800-223-1468

Providing New England Industrial Companies Outstanding Value, Support & Service for Valves and Process Instrumentation

Piping Specialties / PSI Controls

Piping Specialties / PSI Controls is a leading industrial instrumentation and controls manufacturer's agent and distributor serving New England, including Maine, New Hampshire, Massachusetts, Vermont, Rhode Island, Connecticut, and Upstate New York. The company's commitment to the industrial market since 1975 has resulted in a wide range of high-quality valves, piping systems, and flow, level, strain, and temperature instrumentation. With a team of highly trained outside and inside staff, Piping Specialties / PSI Controls solves demanding applications and delivers excellent customer service. 

All major industrial markets, including power generation, chemical manufacturing, pulp and paper, oil and gas extraction, water and wastewater treatment, and nuclear power generation, have benefited from PSI's products. Piping Specialties / PSI Controls has been there with their customers for over 40 years, offering superior support and service.

Piping Specialties / PSI Controls

800-223-1468

Drexelbrook CheckWell™ Water Well Level Sensor

Drexelbrook CheckWell™

The Drexelbrook CheckWell™ water well level sensor automatically monitors the level or drawdown in water wells up to 3000 feet deep.

The AMETEK Drexelbrook CheckWell™ water well level sensor automatically monitors the level or drawdown in water wells up to 3000 feet (914m) deep. It generates a continuous linear output signal that is directly proportional to the well level. This output can be used for remote monitoring/recording, warning signals, and pump control via optional current-actuated relays.

The advantages include quick installation, no manual maintenance, and an all-electronic design for exceptional reliability. Density variations, mineral or oil deposits on the sensing feature, and oil on top of the water do not affect the device.

DOWNLOAD THE DATASHEET HERE

Piping Specialties / PSI Controls

800-223-1468

Kurz Flow Meter Allows Precise, Real-Time Dry Flow Measurements for Landfill Pollution Reporting

Kurz Flow Meter

Landfill gas (LFG) is a natural byproduct of organic material decomposition in landfills. LFG is approximately half methane (natural gas's primary component), half carbon dioxide (CO2), and a small amount of non-methane organic compounds. Methane is a potent greenhouse gas that traps heat in the atmosphere 28 to 36 times more effectively than CO2 over a 100-year cycle.

Landfills for municipal solid waste (MSW) are the third-largest source of human-related methane pollution in the United States, accounting for around 15.1 percent of total emissions in 2018.

LFG can be captured, transformed, and used as a renewable energy resource instead of escaping into the air. Using LFG reduces odors and other risks associated with LFG emissions and methane migration into the atmosphere, which contributes to local smog and global climate change. 

A collection of wells and a blower/flare (or vacuum) device remove LFG from landfills. The collected gas moves to a central location where it can be stored and handled, depending on the gas's ultimate use. The gas can be flared or put to good use in an LFG energy project from here.

Because of regulatory requirements, numerous landfills install gas control controls. The federal government has adopted legislation that regulates the use and upkeep of landfills. These rules help eliminate ozone precursors (volatile organic compounds and nitrogen oxides), methane, NMOCs, and odorous compounds in landfill gas pollution, which harms human health and the environment.

Thermal flow meter technology is known for having a low-pressure drop and is suitable for calculating extremely low flows. On the other hand, standard thermal flow meters do not operate well in condensing gas environments like landfill methane recovery systems. The accuracy issues associated with wet gas flow measurements grow by the unpredictability of moisture levels caused by leachate, rain, temperature, and humidity. 

The Kurz WGF flow meter is perfect for use in wet gas applications. Kurz allows you to quantify gas flow precisely and provide real-time dry flow measurements for pollution reporting (federal, state, local regulations, greenhouse gases, and the Landfill Methane Rule).

For more information about Kurz flow meters in New England, contact Piping Specialties, Inc. Call them at 800-223-1468 or visit their website at https://psi-team.com.

Reduced Bore Vortex Flowmeter Provides Better Measurement for Low Flow and Also Saves Cost

Reduced Bore Vortex Flowmeter

Azbil’s AX24 Multivariable Vortex Flowmeter offers accurate and reliable flow metering in a multivariable design. The multivariable design incorporates a high-accuracy velocity sensor, a precision platinum RTD temperature sensor, and a solid-state pressure transducer. The meter’s process connections match the line size but use integrated reducing flanges, and the meter body reduces in diameter, increasing the fluid velocity through the meter. Increasing the velocity in this fashion extends the meter’s measuring range to capture lower flow rates that a full line size meter might miss. 

READ HOW THE AZBIL AX24R EXTENDS MEASURING RANGE FOR LOWER FLOW RATES AND SAVES COST HERE

To learn more about the AX24R visit this page

For immediate action in New England, call Piping Specialties / PSI Control at 800-223-1468.

The CPV O-SEAL® Valve

CPV’s flagship O-SEAL® valves have been the industry’s standard-bearer for bubble-tight performance and robust longevity in high pressure applications. All O-SEAL® valves provide pressure ratings up to 6000 PSI, with an optional vacuum service available. They provide superior bubble-tight performance, even with elusive gases like hydrogen and helium, and are resistant to debris and seat damage. 

For more information about O-SEAL® valves in New England, contact Piping Specialties, Inc. Call them at 800-223-1468 or visit their website at https://psi-team.com.

Industrial Refractometers

Industrial Refractometers

Refractometry, a mixture of physics, material science, and chemistry, is a method that calculates the composition of known substances by measuring their respective refractive index (RI). The refractometer determines dissolved solids' concentration by making an optical measurement of a solution's refractive index (nD). The refractometer measures the refractive index nD and the temperature of the process medium. The calculation is based on the refraction of light in the process medium, called the critical angle of refraction, using a yellow LED light source with the same wavelength (580 nm) as the sodium D line (thus nD). In most solutions, the concentration of solute in a solvent can be determined by measuring the refractive index nD. The relation between the refractive index and the concentration depends on the solvent and solute, temperature, and wavelength.


Typical examples of industrial refractometry uses are:


  • The calculation of the salinity of water to assess its drinkability.
  • The analysis of dissolved solids in liquor production in pulp and paper production.
  • The assessment of sugar content ratios for food products and beverages.
  • The understanding of the hydrocarbon content of motor fuels. 


These are just a few examples. There are many more common industrial uses for industrial inline refractometers and thousands of unidentified potential applications. 


To discuss your application for refractometers in New England, contact Piping Specialties, Inc. / PSI. 


Piping Specialties / PSI Controls

800-223-1468

Level Measurement Solutions for Water Treatment

Level Measurement Solutions for Water Treatment

Several functional level measurement technologies have viable solutions for a broad range of industrial and municipal water treatment applications. Because of the variety of applications that exist and the varying application conditions, no one technology is best suited in all cases. 

POINT LEVEL VERSUS CONTINUOUS LEVEL INSTRUMENTS

Regardless of the application, there are two significant classifications of level measurement instrumentation: point level and continuous level measurement.

Point Level (On/Off) measurement indicates the absence or presence of level at a certain threshold (point) within a vessel.  Point-level switches perform as high level and spill prevention alarms, low level, pump protection alarms and pump control.

Continuous Level (Proportional) measurement indicates the level in a vessel over the full span of capacity.  These devices perform as process control as well as inventory control and management.

LEVEL CONTROL TECHNOLOGY CHOICES

The technologies used to measure level are affected differently by the varying process conditions. Below is a brief description of the different technologies commonly used in a water treatment facility.

RF ADMITTANCE/CAPACITANCE
RF Admittance/Capacitance employs a radio frequency signal and monitors for a change in capacitance. Either the presence or absence of material or how much material is in contact with the sensor, making it highly versatile and a right choice for a wide range of conditions and materials for point or continuous level measurement.

RADAR
Radar utilizes either Pulsed Wave or Frequency Modulated Continuous Wave (FMCW) through-air transmission that allows for an accurate non-contact reading of reflected electromagnetic signals.

MAGNETOSTRICTIVE
Magnetostrictive uses an electric pulse from ferromagnetic wire to accurately detect a float's position with embedded magnets.  As the pulse intersects the float's magnetic field, a second pulse reflects an electric circuit that accurately determines the distance and thus the level position.

CONDUCTIVITY SWITCHES
Conductivity switches measure the drop-in resistance when a conductive liquid contacts with two probes or a probe and a vessel wall.

ULTRASONIC (POINT LEVEL)
Ultrasonic (Point Level) measurement electronically resonates a crystal at a fixed frequency to generate sound waves that travel across an air gap to a second crystal.  As liquid fills the gap between the two crystals, the second crystal begins to resonate with the first.

ULTRASONIC (CONTINUOUS LEVEL)
Ultrasonic (Continuous Level) measurement uses a transmitter to generate an ultrasonic pulse and measures the time it takes for a reflected signal to return to the transducer to determine a liquid level.

GUIDED WAVE RADAR (GWR)
Guided Wave Radar (GWR) utilizes a Time Domain Reflectometry (TDR) technique by sending a highly focused electronic signal down a metallic rod or flexible cable waveguide. When the transmitted signal intersects the liquid's surface, it reflects along the rod or cable to determine the distance traveled. The level position is then easily inferred.

HYDROSTATIC
Hydrostatic measurement immerses a pressure transmitter with a sensing diaphragm and a sealed electronic circuitry that transmits an analog signal proportional to the liquid level above the sensor.

FLOAT SWITCHES
Float switches rely on a low-density float mounted in a vessel that magnetically couples to a limit switch. A change in fluid height actuates a switch by moving the float.

VIBRATION/TUNING FORK
The Vibration/Tuning fork is piezoelectrically energized and vibrates at a frequency of approximately 1200Hz, and as the process media cover the fork, the frequency shifts. The internal oscillator the frequency shift by and converts it into a switching command.

POINT LEVEL SOLUTIONS

Advanced RF Admittance/Capacitance point level devices are the most versatile of the point level technologies, especially with process media that can coat the sensor. They provide excellent spill/overfill protection. They are simple to install and have no moving parts, making them virtually maintenance-free. Their robust design and circuitry make them an ideal solution for many water treatment applications.

Both tuning forks and ultrasonic gap switches provide reliable high- or low-level measurements in various applications. For non-coating conductive liquids, conductivity switches provide economic priced measurement while float switches appear in many basic applications at very cost-effective prices.

CONTINUOUS LEVEL SOLUTIONS

Mechanical systems such as floats and bubblers require extensive maintenance and are less reliable and accurate than electronic systems. Hydrostatic systems afford better reliability and are simple to use, and can transmit data to another receiver for remote monitoring, recording, and control.

RF Admittance/Capacitance level is a time-proven and one of the best available technologies for indication and control. RF technology inherently provides the highest accuracy and repeatability in interface measurements. Variations in the makeup of upper and lower phases of a liquid have no appreciable effect on system accuracy. Recalibration is not required.

For short-span measurements, RF Admittance technology provides one of the most preferred readings. As the level of measurement span decreases, the more appropriate RF technology becomes. In spans of only a few inches, RF systems can repeatedly produce accuracies of 1/32ths of an inch. RF has the added benefit of not being limited by “dead zones” inherent with many popular technologies often selected for measurement ranges larger than 5 feet.

Non-metallic tanks pose no technical problems for Ultrasonic, Magnetostrictive, Hydrostatic Pressure, Radar, and GWR (Guided Wave Radar) technologies. The GWR approach is suitable for vessels with internal obstructions and uses lower energy levels than airborne radar technologies. Non-contact technologies, such as Radar and Ultrasonic, can have measurement ranges up to 130 feet. 

For long-range measurements or headroom limitations, flexible sensors offer insertion lengths up to several hundred feet for Hydrostatic Pressure and RF Admittance technology products. Loop-powered GWR (TDR)-based products allow measurement ranges up to 115 feet in selected applications. Magnetostrictive technology provides an accuracy of 0.1% of measurement span in flexible sensor designs up to a maximum range of 70 feet.

Piping Specialties / PSI Controls
800-223-1468

Sizing Calculator for LINK-SEAL® Elastomer Sealing System Available

Sizing Calculator for LINK-SEAL®

LINK-SEAL® modular seals are the premier method for permanently sealing pipes of any size passing through walls, floors, and ceilings. As they pass through barriers, any cylindrical object becomes quickly and persistently secured by the patented Link-Seal® modular seal design.

LINK-SEAL® withstand hydrostatic testing up to 20 PSIG (40 feet of static head) and is used on plastic, metal, and concrete pipes. Electrical and telecommunications cables are sealed within conduit as they enter vaults or utility holes. Link-Seal® also closes the annular space between carrier pipes passing through casings against the entry of water, soil, or backfill material. 

LINK-SEAL® provides a handy calculator to assist in sizing and choosing your LINK-SEAL® sealing system. You can find the calculator here.

Piping Specialties / PSI Controls
800-223-1468

Valve Positioners

Valve Positioners

Valve positioners control a valve's position (ball, butterfly, and globe) such that a given process will achieve specific desired flow parameters. They perform this by determining the error between the optimum valve position and actual valve position. With specialized sensors mounted on the valve stem or actuator shaft, these sensors compare the magnitude of error between the setpoint from the control system and the actual process value. The positioner's corrective output is sent electrically or pneumatically to a valve actuator, which moves the valve in the corrective direction. 

As a control valve accessory and the interface between the control system and valves, positioners play a vital role in ensuring the process loop's performance. The valve positioner adjusts the valves' opening, thereby varying the valve's flow rates, from completely shut or wide open to anywhere in between. An example of this type of positioning control will include mixing hot and cold water to achieve a specified downstream temperature requirement. By controlling the valve's opening and closing, process control parameters such as flow, pressure, level, and temperature are maintained

Piping Specialties / PSI Controls offers a full range of positioning equipment, including pneumatic, electro-pneumatic, intrinsically safe, explosion-proof, and Smart type positioners.

Piping Specialties / PSI Controls
800-223-1468

Level Measurement for Water in Sewage Pools

Level Measurement for Water in Sewage Pools

This application takes place at a large power plant well known for its "Green Approach" and it's commitment to ensuring a clean and healthy atmosphere in and around the plant. 

The branched sewer system of the power plant requires instant maintenance and control. The plant uses water to operate the turbine. This water and other wastes move to the city’s wastewater treatment plant through the sewage system.

Some of the sewers are dispersed in remote locations around the plant, making it difficult for personal maintenance personnel to approach and repair damage on time. Plant technicians were looking for a solution to control the sewers better and avoid cases where wastewater might overflow. 

The sewage pool readings had to be transmitted to the central DCS because the sewage system connects to a central control room. The plant needed a 24/7 watch and an on-site guard to gain maximum control over those sewers. 

Technicians also stressed that wastewater flooding was inevitable because it takes time for the equipment to handle blockages. This flooding has caused severe damage to the environment. It was essential to control the wastewater level in the sewers to avoid cases such as these from reappearing. 

The Drexelbrook Usonic - The Solution 

After a lengthy examination of several possibilities, the plant decided to install two Drexelbrook USonic systems in its sewage pools. The ability of USonic to produce non-contact, continuous, and accurate readings of the water level in the pools gave the engineers of the plant a clear picture of the pools' status. 

Its compact size and integral construction simplify its installation, offering an efficient solution in no time at all. The USonic had no problem providing 12ft water level readings with a measurement range of up to 30 ft.  It can map obstacles in the pool and memorize interfering signals with its scan distance function. 

The USonic was linked to the central control system via 4-20mA, allowing the plant engineers to control the water level in the sewers constantly. The engineers know that the sewers would maintain the correct water level, and the system would be alerted in an emergency. 

Summary

The two USonic systems installed in the power plant give complete control over the sewers' water level to the plant's engineers. The systems' ability to display continuous level readings around the clock improved maintenance crews handle the sewage system.

To detect sudden blockages and avoid environmental damage on time, they can now save time. The plant received an immediate return on investment due to its compact size and reduced price.

Piping Specialties / PSI Controls
800-223-1468

Key SIL (Safety Integrity Levels) Terms

Safety Integrity Levels

The global value of SIL (Safety Integrity Levels) to the process industries has increased significantly over the years. For many companies, SIL is still an elusive term sometimes misunderstood and implemented incorrectly. To fully understand SIL and its consequences, it is essential to comprehend the necessary words, acronyms, and phrases often used and how they relate to the pursuit of functional safety.  The following are some of the most commonly used:

Dangerous failure

Failure with the potential to bring the safety instrumented system into a dangerous or non‐functional state.

FMEDA

Failure Modes Effects and Diagnostic Analysis

HFT

Hardware Fault Tolerance, ability of a hardware to continue to perform a required function in the presence of faults or errors.

MTBF

Mean Time Between Failures

PFD

Probability of Failure on Demand, Probability of hazardous failures for a safety function on demand.

Safety Function

The ability of a system to carry out actions necessary to maintain a defined safe state for a process, equipment, or a plant.

Safety‐Related System

A safety‐related system performs the safety functions that are required to maintain a safe condition (for example, a flow meter, a burner, and a PLC).

SFF 

Safe Failure Fraction, percentage of failures that do not have the potential to put the safety‐related system in a hazardous state.

SIL

Safety Integrity Level, IEC 61508 defines four Safety Integrity Levels (SIL1 through SIL4). Each level corresponds to a level of probability for the failure of a safety function.

SIS 

Safety Instrumented System, implementation of one or more safety instrumented functions.


Piping Specialties / PSI Controls
800-223-1468

Terms and definitions courtesy of Kurz Instruments

The Operation of the Cash Valve B Series, Type E-55, Type PBE-1, Type PBE-2, and Type PBE-5

Cash Valve is a leading manufacturer of pressure regulating and back pressure valves offering products for steam, air/gas, liquid, and cryogenic applications. Products range in size from 1/8" - 2" for threaded NPT connections and up through 6 inches for flanged configurations. Temperatures range between cryogenic up through 800°F, and materials of construction are offered with iron, brass, bronze, carbon and stainless steel depending on your application.

For more information about Cash Valve, contact Piping Specialties, Inc. by calling 800-223-1468 or by visiting their web site at https://psi-team.com