PSI Flange Isolation Kits

Pipeline Seal and Insulator is a worldwide manufacturer and marketer of a wide variety of high quality products used to guarantee the safe flow of fluids through pipeline transmission and distribution systems. Wherever you find pipelines that carry the fluids to electrify factories, energize cities, fuel transportation systems and quench the thirst of nations you'll find the products of PSI.

Our casing spacers/isolators are used on long distance transmission pipelines for two purposes. When a pipeline intersects with a railroad right-of-way, highway, waterway or any other thoroughfare the pipeline usually passes under or is buried beneath the obstruction. For protection, in these areas, the carrier pipe is placed inside a casing pipe in an effort to double contain?the fluid that is passing through the carrier pipe. If a leak or break were to occur, the fluid would be directed to a safe distance away from beneath the thoroughfare. In fact, many local Governmental Agencies require this procedure almost anywhere when volatile or hazardous fluids are flowing through the carrier pipe.

Secondly, the casing spacer/isolator is used to electrically isolate the carrier pipe from the casing pipe. In most cases a corrosion mitigation program is in place to protect the carrier pipe and the isolator guarantees no additional metal objects come in contact with the carrier pipe thus ensuring the integrity of the corrosion mitigation program.

PSI sealing and isolating gaskets are used in more intricate piping systems, such as a refinery or chemical plant, where many flanged connections are prevalent to direct fluids through a maze of processing devices. The respected and proven Gasket-Seal and Line-Backer sealing gaskets are industry standards with their unique sealing elements that allow customers to use minimal amounts of flange bolt torque to create a seal even on high pressure lines. Many of these gaskets, installed decades ago, are still providing the sealing protection guaranteed by PSI when they were bolted into the system.

A new addition to the PSI line of sealing gaskets is the Line-Seal, a critical service gasket that is designed to withstand severe corrosive environments, including high concentrations of CO2, H2S, produced water and aggressive inhibitors even at elevated or fluctuating temperatures. Designed with a steel retainer fused to a dielectric material the Line-Seal, with its unique pressure-activated seal may also be used to electrically isolate flanges for cathodic protection.

All PSI sealing and non-sealing gaskets with dielectric retainers are available in Flange Isolation Kit form. The kits include all necessary sleeves and washers of the appropriate size and number to effectively seal and electrically isolate one flange half from another.

Another long distance transmission pipeline product PSI is well known for is the ElectroStop fitting. In 1974 PSI was called upon to solve a large isolating problem. The project was the Alaska pipeline, a 48-inch diameter tunnel of steel designed to carry crude oil across some of the most tortuous and inhospitable terrain in the world. Only the most reliable insulating fittings could be used due to the remote location and unpredictable weather patterns. So PSI ElectroStop fittings were specified and welded into what is still considered one of the largest and most complex projects undertaken by mankind.

Of further note, many of the original ElectroStop fittings are still providing electrical isolation to pump stations along a pipeline that is now over 35 years old.

Secondly, the casing spacer/isolator is used to electrically isolate the carrier pipe from the casing pipe. In most cases a corrosion mitigation program is in place to protect the carrier pipe and the isolator guarantees no additional metal objects come in contact with the carrier pipe thus ensuring the integrity of the corrosion mitigation program.

PSI sealing and isolating gaskets are used in more intricate piping systems, such as a refinery or chemical plant, where many flanged connections are prevalent to direct fluids through a maze of processing devices. The respected and proven Gasket-Seal and Line-Backer sealing gaskets are industry standards with their unique sealing elements that allow customers to use minimal amounts of flange bolt torque to create a seal even on high pressure lines. Many of these gaskets, installed decades ago, are still providing the sealing protection guaranteed by PSI when they were bolted into the system.

A new addition to the PSI line of sealing gaskets is the Line-Seal, a critical service gasket that is designed to withstand severe corrosive environments, including high concentrations of CO2, H2S, produced water and aggressive inhibitors even at elevated or fluctuating temperatures. Designed with a steel retainer fused to a dielectric material the Line-Seal, with its unique pressure-activated seal may also be used to electrically isolate flanges for cathodic protection.

All PSI sealing and non-sealing gaskets with dielectric retainers are available in Flange Isolation Kit form. The kits include all necessary sleeves and washers of the appropriate size and number to effectively seal and electrically isolate one flange half from another.

Another long distance transmission pipeline product PSI is well known for is the ElectroStop fitting. In 1974 PSI was called upon to solve a large isolating problem. The project was the Alaska pipeline, a 48-inch diameter tunnel of steel designed to carry crude oil across some of the most tortuous and inhospitable terrain in the world. Only the most reliable insulating fittings could be used due to the remote location and unpredictable weather patterns. So PSI ElectroStop fittings were specified and welded into what is still considered one of the largest and most complex projects undertaken by mankind.

Of further note, many of the original ElectroStop fittings are still providing electrical isolation to pump stations along a pipeline that is now over 35 years old.