Using Link-Seal in Combination with Century-Line Sleeves or Cell-Cast Disks for Sealing Pipe Penetrations when Pouring Walls, Floors or Ceilings

Sealing pipes passing through concrete barriers can be one of the really tough challenges confronted by designers and installers of any piping system. But there's a way to simplify the whole process. All it takes is the system approach.  Link-Seal in combination with Century Line sleeves makes for a dynamic combination.  Just what you need to quickly and easily seal any cylindrical object passing through concrete poured walls, floors, and ceilings.

Link-Seal is a flexible belt of interconnected rubber links used to seal the void area or annular space between a cylindrical pipe and round wall opening. Be it a steel sleeve, plastic sleeve, or poured hole, installation is easy. The belt is simply wrapped around the pipe connected and secured by tightening the bolt heads moving clockwise around the seal. Pressure plates on each side of the link applied the compression necessary to expand the rubber. As the bolts are tightened, the links enlarge from a free to an expanded state, transforming the belt of separate links into a hydrostatic seal capable of holding in excess of 20 PSIG with a safety factor of 5 to 1. In the laboratory under controlled conditions, Link-Seal has been successfully tested to 100 PSIG and above.  In addition, accelerated aging tests have shown Link-Seal to be capable of providing maintenance-free service over performance life cycles estimated at 40 years or more.

In the real world, Link-Seal improves overall system reliability by effectively dampening the damaging effects of vibration.  Link-Seals reduce fatigue on pipe welds, flanges and threaded connections. As an added bonus, they may also be used to isolate stray electric current passing through pipes and casings. Applications for Link-Seal are almost infinite. In fact, any cylindrical object may be quickly easily and permanently sealed as they pass through barriers of all kinds.

For more information on Link-Seal, contact:
Piping Specialties, Inc.
https://psi-team.com
800-223-1468

Happy Holidays from Piping Specialties / PSI Controls

From all of us at Piping Specialties/PSI Controls, we wish our customers, partners and vendors a safe and happy holiday season and a wonderful 2019!

What Are Trunnion Mount Ball Valves?

Trunnion ball valve design. Trunnions highlighted.

Ball valves are well understood in process control and industrial piping systems. Their simple 1/4 turn operation, compact form factor, bidirectional sealing, and tight shutoff make them a very popular choice for a wide range of applications.

Although there are many varieties of seat designs, body styles, and flow patterns, ball valves can be separated in to two main groups, distinguished by a primary design element - the mounting method of the valve ball.

The two groups are:

• Floating ball
• Trunnion mounted ball

Floating ball valves use the body and valve seats to position and hold the ball in the media flow path, allowing the flow force to lodge the "floating" ball firmly against the downstream seat. In this style, the ball is not mechanically held in place, thus the term "floating". Floating ball valves are, in general, limited to applications with smaller sizes and lower pressure ranges because, at some point, the fluid pressure on the ball may exceed the seat and trim's ability to hold the ball properly in place.

Trunnion mount valves, on the other hand, employ a "trunnion" in their design. A trunnion is a pin, or a pivot, forming one of a pair on which ball is mechanically connected and supported. The valve shaft and the trunnion connect at the top and bottom of the valve and create the vertical axis of rotation for the ball. The trunnion also prevents the ball from moving or shifting with changing pressures.

Due to their structural integrity, trunnion mount ball valves are generally well suited for all pressure ranges and valve sizes. Their design is used by many manufacturers for severe service. They provide excellent sealing properties over an extensive range of temperatures and pressures. Trunnion mount valves are available in both full and reduced bore designs with a wide range of materials, sizes, and pressure classes offered. The vast range of sizes, styles, pressure classes, and materials together with conformance to ANSI, API, and NACE specifications make these valves suitable for virtually all industrial, petrochemical, refinery, and oil and gas services. Finally, there may be an advantage to actuate trunnion ball valves due to lower torque requirements compared to similar floating ball valves whose torque increases with increasing flow pressure.

For more information on floating ball or trunnion mount ball valves, contact Piping Specialties, Inc. at 800-223-1468 or visit https://psi-team.com.

Process Refractometers Used in Black Liquor Recovery Boilers

The recovery boiler plays a central role in the chemical cycle of a modern pulp mill. The recovery boiler is a chemical reactor, which is used for recovering chemicals from spent kraft liquor and generating energy at the same time.

In the recovery boiler, the organic matter is burned. The dry solids liquor content required for firing is at least 60 %, but preferably more than 65 %. Black liquor is concentrated by evaporating water from the liquor. When the concentration of black liquor is maximized, so is the energy production. Before entering the burners, sodium sulfate decahydrate, or glauber salt, is added to cover chemical losses.

Application

Chemical curve: R.I. per Black
liquor Conc% at Ref. Temp. of 20 ̊C

The liquor should have a high content of combustible dry solids in order to minimize flue gas emissions and maximize boiler efficiency.

Too low concentration of dry solids fed to the burners may result in a steam explosion with consequent damage or destruction to the boiler. Therefore, it is essential to utilize a refractometer to monitor the black liquor feed to the recovery boiler to ensure a safe operation.

Instrumentation and installation

The K-Patents Digital Divert Control System DD-23 complies strictly with all recommendations of the Black Liquor Recovery Boiler Advisory Committee (BLRBAC).

The DD-23 system includes two SAFE-DRIVE Process Refractometer sensors in the main black liquor line, two indicating transmitters and a divert control unit in an integrated panel.

The sensors are installed using K-Patents patented SAFE-DRIVE Isolation valve. This allows for safe and easy insertion and retraction of the refractometers under full operating pressure, without having to valve off the liquor piping or having to shut down the process. The SAFE-DRIVE Isolation valve contains a steam wash system for automatic prism cleaning. The system contains a SAFE-DRIVE Retractor Tool SDR-23 for safe sensor insertion and retraction.

For more information about refractometers used on blacl liquor recovery boilers, contact Piping Specialties by calling 800-223-1468 or visit https://psi-team.com.

The Drexelbrook USonic Non-contact Level Transmitter

The Drexelbrook USonic level transmitter provides a level measurement utilizing a non-contact ultrasonic sensor. Measurements of level, distance, volume and open channel flow is easily configured through the menu driven display. The Usonic level transmitter is offered with a two wire 4-20 mA, Hart output signal and is suitable for all Class I Div. 1, Zone 0, I.S. or XP locations.

For more information contact PSI Controls / Piping Specialties by calling 800-223-1468 or visit https://psi-team.com.

Level and Pressure Instrumentation for Pulp & Paper Production

Pulp and paper applications create a notoriously harsh, high moisture and chemical-laden environment; coupled with extreme vibration in many of the processes. The following document outlines an array of level, pressure, and position applications and solutions for the pulp & paper industry.

Download a copy of the Measurement Solutions for the Pulp & Paper Industry here.


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

Level and Pressure Instrumentation for Pulp & Paper Production from Piping Specialties, Inc and PSI Controls

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