Tanks Vents

Flow Charts

OUR EXPERTISE

Enhanced containment for a cleaner environment.

Prism manufactures a wide range of tank relief vents and accessories, all guaranteed to deliver the industry’s lowest leak rates, extremely accurate set points, and extended life expectance. At the heart of all Prism vents is our patented technology, the counter0force pressure suspended valve assembly.

Accumulated knowledge and experience by engineers in the venting industry has been applied to create the standards governed by API 2000 that all manufacturers and end-users must adhere to.  Being a major contributor to the progression of the modern tank vent, Prism sits as a member of the API 2000 Task Force to assist in the forward growth and fair play in the industry with focus directed towards safety and stringent testing procedures.

Why Tank Vents?

A tank vent is a device relied upon to control the pressure or vacuum of the vapor space in atmospheric or low-pressure storage tanks. Normal inbreathing and outbreathing of large tanks are common due to a multitude of factors including, for example, liquid transfer effects and thermal expansion and contraction. Emergency venting because of fire is also a very real safety concern that requires attention on a case-by-case basis. Tank vents come in multiple designs, sizes, and configurations based on their intended purposes, as well as having the ability to be calibrated to operate within predetermined parameters.

Prism Tank Vents

Up to 10X leak rate reduction!

Our truly unique vapor recovery system. The heart of Prism’s vent line is in the air purge seal we call the Counter Force. The seal acts as a pressure suspended valve sealing assembly, affording the lowest leak rate in the industry, and improving set point accuracy. The Counter Force helps to extend the life of the relief valve due to its air cushioned ride, pressure suspended valve assembly. This translates into savings of product loss, blanketing gas losses, maintenance, and rebuild costs.  The user-friendly design of our bolt in stainless steel seat allows for valve servicing performed in position.

OUR PRODUCTS

Available Options

We specialize in :

Compliance.

Accumulated knowledge and experience by combustion engineers in the venting industry has been applied to create the standards governed by API 2000 that all manufacturers and end-users must adhere to. Being a major contributor to the progression of the modern tank vent, Prism sits as a member of the API 2000 Task Force to assist in the forward growth and fair play in the industry with focus directed towards safety and stringent testing procedures.

Pressure Vacuum Thief Hatch (PVTH)

AVAILABLE SIZES: 8’’

Prism has developed the Vapor Tight Pressure/Vacuum Thief Hatch to address fugitive emissions for the new millennium. Releases of toxic vapors into the atmosphere are unacceptable and wrong. Prism’s vapor recovery unit offers superior sealing ability, is built to last, and has good local service and support to make repairs quickly if necessary.

The Prism Vapor Tight Thief Hatch will address the vapor recovery issues of your flare stack. Our Counter Force Pressure Suspended Seal Assembly works by inflating as the pressure rises in the tank. As it inflates, it creates an even tighter air purge seal. A choice of body materials such as aluminum, coated carbon steel, and stainless steel are available to choose from. Carbon steel and stainless-steel construction ensure long life and durability. Prism has local manufacturing facilities and pursues combustion engineering challenges aimed squarely at Alberta’s harsh climate and conditions.

Right Side Up Pressure Vacuum Thief Hatch (RSU-PVTH)

AVAILABLE SIZES: 8’’
Solving Leakage Problems

Prism Integrated Solutions Inc. has engineered the Right Side Up Thief Hatch to eliminate problems associated with thief hatches in general. All other thief hatches incorporate a vacuum valve that hangs in the thief hatch valve upside down. Being that the valve is upside down, all rust, debris, ice, and water are sitting on the valve pallet, where if the valve opens, will fall right in between the seat and the valve pallet causing continuous leaking. Once the valve opens, the chance of getting debris between the seat is very high occurs frequently.

Pressure Only Pipe Away (POPA)

AVAILABLE SIZES: 2”, 2”x3”, 3”, 3”x4”, 4”, 4”x6”, 6”, 6”x8”, 8”, 8”x10”, 10”, 10”x12”, 12”, 12”x14”

This pressure only relief vent design is totally sealed and configured to pipe-away vapor to a transfer or recovery line from a common flange connection without releasing any hazardous gas or vapors to atmosphere.

Pressure Vacuum Pipe Away (PVPA)

AVAILABLE SIZES: 2”, 2”x3”, 3”, 3”x4”, 4”, 4”x6”, 6”, 6”x8”, 8”, 8”x10”, 10”, 10”x12”, 12”, 12”x14”

This pressure and vacuum relief vent design is totally sealed and configured to pipe-away vapor to a transfer or recovery line from a common flange connection without releasing any hazardous gas or vapors to atmosphere.

Pressure Only to Atmosphere (POTA)

AVAILABLE SIZES: 2”, 3”, 4”, 6”, 8”, 10”, 12”

This pressure only relief vent design is configured to release internal tank pressure to atmosphere and is equipped with a weather hood to protect internal pallet while in service.

High Pressure, Pressure Only to Atmposhere (HP-POTA)

AVAILABLE SIZES: 2”, 3”, 4”, 6”

This high pressure version of pressure only relief vent design (up to 14.9PSI) is configured to release internal tank pressure to atmosphere and is equipped with a weather hood to protect internal pallet while in service.

Pressure Vacuum to Atmosphere (PVTA)

AVAILABLE SIZES: 2”, 3”, 4”, 6”, 8”, 10”, 12”

This pressure and vacuum relief vent design is configured to release internal tank pressure to atmosphere and is equipped with a weather hood to protect internal pallet while in service.

High Pressure, Pressure Vacuum to Atmosphere (HP-PVTA)

AVAILABLE SIZES: 2”, 3”, 4”, 6”

This high pressure and vacuum relief vent design is configured to release internal tank pressure to atmosphere and is equipped with a weather hood to protect internal pallet while in service.

Vacuum Only Side Mount (VOS)

AVAILABLE SIZES: 2”, 3”, 4”, 6”, 8”, 10”, 12”

Prism has a wide variety of truly unique vapour recovery systems. The Vacuum Only Side Mount is one of the available options for our incredible product offering, contact us to learn more about how the Vacuum Only Side Mount is the right fit for you.

Prism has developed the Vapor Tight Pressure/Vacuum Thief Hatch to address fugitive emissions for the new millennium. Releases of toxic vapors into the atmosphere are unacceptable and wrong. Prism’s vapor recovery unit offers superior sealing ability, is built to last, and has good local service and support to make repairs quickly if necessary.

The Prism Vapor Tight Thief Hatch will address the vapor recovery issues of your flare stack. Our Counter Force Pressure Suspended Seal Assembly works by inflating as the pressure rises in the tank. As it inflates, it creates an even tighter air purge seal. A choice of body materials such as aluminum, coated carbon steel, and stainless steel are available to choose from. Carbon steel and stainless-steel construction ensure long life and durability. Prism has local manufacturing facilities and pursues combustion engineering challenges aimed squarely at Alberta’s harsh climate and conditions.

Vacuum Only Roof Mount (VOR)

AVAILABLE SIZES: 2”, 3”, 4”, 6”, 8”, 10”, 12”

Prism has a wide variety of truly unique vapour recovery systems. The Vacuum Only Roof Mount is one of the available options for our incredible product offering, contact us to learn more about how the Vacuum Only Roof Mount is the right fit for you.

Prism has developed the Vapor Tight Pressure/Vacuum Thief Hatch to address fugitive emissions for the new millennium. Releases of toxic vapors into the atmosphere are unacceptable and wrong. Prism’s vapor recovery unit offers superior sealing ability, is built to last, and has good local service and support to make repairs quickly if necessary.

The Prism Vapor Tight Thief Hatch will address the vapor recovery issues of your flare stack. Our Counter Force Pressure Suspended Seal Assembly works by inflating as the pressure rises in the tank. As it inflates, it creates an even tighter air purge seal. A choice of body materials such as aluminum, coated carbon steel, and stainless steel are available to choose from. Carbon steel and stainless-steel construction ensure long life and durability. Prism has local manufacturing facilities and pursues combustion engineering challenges aimed squarely at Alberta’s harsh climate and conditions.

Gauge Hatch (GHFL)

AVAILABLE SIZES: 2”, 3”, 4”, 6”, 8”, 10”, 12”

Prism has a wide variety of truly unique vapour recovery systems. The Guage Hatch is one of the available options for our incredible product offering, contact us to learn more about how the Guage Hatch is the right fit for you.

Prism has developed the Vapor Tight Pressure/Vacuum Thief Hatch to address fugitive emissions for the new millennium. Releases of toxic vapors into the atmosphere are unacceptable and wrong. Prism’s vapor recovery unit offers superior sealing ability, is built to last, and has good local service and support to make repairs quickly if necessary.

The Prism Vapor Tight Thief Hatch will address the vapor recovery issues of your flare stack. Our Counter Force Pressure Suspended Seal Assembly works by inflating as the pressure rises in the tank. As it inflates, it creates an even tighter air purge seal. A choice of body materials such as aluminum, coated carbon steel, and stainless steel are available to choose from. Carbon steel and stainless-steel construction ensure long life and durability. Prism has local manufacturing facilities and pursues combustion engineering challenges aimed squarely at Alberta’s harsh climate and conditions.

Emergency Pressure Relief (EPR)

AVAILABLE SIZES: 16”, 20”, 24”

Prism has a wide variety of truly unique vapour recovery systems. The Emergency Pressure Relief is one of the available options for our incredible product offering, contact us to learn more about how the Emergency Pressure Relief is the right fit for you.

Prism has developed the Vapor Tight Pressure/Vacuum Thief Hatch to address fugitive emissions for the new millennium. Releases of toxic vapors into the atmosphere are unacceptable and wrong. Prism’s vapor recovery unit offers superior sealing ability, is built to last, and has good local service and support to make repairs quickly if necessary.

The Prism Vapor Tight Thief Hatch will address the vapor recovery issues of your flare stack. Our Counter Force Pressure Suspended Seal Assembly works by inflating as the pressure rises in the tank. As it inflates, it creates an even tighter air purge seal. A choice of body materials such as aluminum, coated carbon steel, and stainless steel are available to choose from. Carbon steel and stainless-steel construction ensure long life and durability. Prism has local manufacturing facilities and pursues combustion engineering challenges aimed squarely at Alberta’s harsh climate and conditions.