Pressure Vacuum Relief Valves

Pressure and Vacuum Relief Valves

Pressure and Vacuum relief valves (PVRV), conservation valves, are used to maintain near atmospheric or low pressure/vacuum conditions within a vessel whilst minimising emissions and exposure to the external environment.

Available combinations:

Pressure Relief Valve
Vacuum Relief Valve
Pressure and Vacuum Relief Valve
Combination pressure/vacuum relief valve and flame arrester

Model 12E-TSW
Groth Pressure and Vacuum Relief Valve (PVRV) with atmospheric venting - Conservation Valve

Pressure settings: 1 to 15 psi ( 69 to 1034 mbar)
Vacuum settings: below 1.5 psi (103 mbar)

The new Groth Model 12E-TSW spring loaded design was created to exceed industry needs. Extensive research and development have produced a product that achieves both superior sealing performance and industry leading flow rates, while also allowing customers to reach required flow with a potentially smaller sized valve. The pressure/vacuum relief valve is designed to protect your tank from damage created by
overpressure or excessive vacuum. Costly product evaporative losses due to normal tank “breathing” are greatly reduced. The Models 12E-TSW is a superior sealing valves developed to minimize fugitive emissions while providing increased protection and safety to tank equipment and on-site personnel.

Utilizes the latest 10% overpressure technology for full lift in+10% of the setpoint.
Product leakage and fugitive emissions are reduced via ultra-tight sealing
Higher flow capacity to protect from both excessive pressure and excessive vacuum build up
Peripheral and central seat guides ensure reliable, repeatable performance
Designed for easy maintenance, thus reducing downtime and operational cost
Superior tightness, exceeding API-2000 leak requirements
Compliant to API-2000 and ISO 28300 standards

Model 12E-TWW-0
Groth Pressure and Vacuum Relief Valve (PVRV) with atmospheric venting - Conservation Valve

Pressure settings below 1.5 psi (103 mbar)
Vacuum settings below 1.5 psi (103 mbar)

The Groth Model 12E-TWW-0 Pressure/Vacuum Relief Valve (PVRV) that vents to atmosphere design was created to exceed industry needs. Extensive research and development has produced a product that achieves both superior sealing performance and industry leading flow rates, while also allowing customers to reach their required flow rates with a potentially smaller sized valve and utilize 10% overpressure technology. Costly product evaporative losses due to normal tank “breathing” are greatly reduced. The Model 12E-TWW-0 are superior sealing valves developed to minimize fugitive emissions while providing increased protection and safety to tank equipment and on-site personnel.

Utilizes the latest 10% overpressure technology for full lift in+10% of the setpoint.
Product leakage and fugitive emissions are reduced via ultra-tight sealing
Higher flow capacity to protect from both excessive pressure and excessive vacuum build up
Peripheral and central seat guides ensure reliable, repeatable performance
Designed for easy maintenance, thus reducing downtime and operational cost
Superior tightness, exceeding API-2000 leak requirements
Compliant to API-2000 and ISO 28300 standards

Model 12F-TSW
Groth Pressure and Vacuum Relief Valve (PVRV) with Pie-Away Body - Conservation Valve

Pressure settings: 1 to 15 psi ( 69 to 1034 mbar)
Vacuum settings: below 1.5 psi (103 mbar)

The new Groth Model 12F-TSW PVRV spring loaded design was created to exceed industry needs. Extensive research and development have produced a product that achieves both superior sealing performance and industry leading flow rates, while also allowing customers to reach required flow with a potentially smaller sized valve. The pressure/vacuum relief valve is designed to protect your tank from damage created by
overpressure or excessive vacuum. Costly product evaporative losses due to normal tank “breathing” are greatly reduced. The Models 12F-TSW is a superior sealing valves developed to minimize fugitive emissions while providing increased protection and safety to tank equipment and on-site personnel.

Utilizes the latest 10% overpressure technology for full lift in+10% of the setpoint.
Product leakage and fugitive emissions are reduced via ultra-tight sealing
Higher flow capacity to protect from both excessive pressure and excessive vacuum build up
Peripheral and central seat guides ensure reliable, repeatable performance
Designed for easy maintenance, thus reducing downtime and operational cost
Superior tightness, exceeding API-2000 leak requirements
Compliant to API-2000 and ISO 28300 standards

Model 12F-TWW-0
Groth Pressure and Vacuum Relief Valve (PVRV) with Pipe-Away - Conservation Valve

Pressure settings below 1.5 PSIG / 103 mbar
Vacuum settings below 1.5 PSIG / 103 mbar

The Groth Model 12F-TWW-0 PVRV design was created to exceed industry needs. Extensive research and development have produced a product that achieves both superior sealing performance and industry leading flow rates, while also allowing customers to reach their required flow rates with a potentially smaller sized valve and utilize 10% overpressure technology. The pressure vacuum relief valve is designed to protect your tank from damage created by overpressure or excessive vacuum. Costly product evaporative losses due to normal tank “breathing” are greatly reduced. The Model 12F-TWW-0 are superior sealing valves developed to minimize fugitive emissions while providing increased protection and safety to tank equipment and on-site personnel.

Utilizes the latest 10% overpressure technology for full lift in+10% of the setpoint.
Product leakage and fugitive emissions are reduced via ultra-tight sealing
Higher flow capacity to protect from both excessive pressure and excessive vacuum build up
Peripheral and central seat guides ensure reliable, repeatable performance
Designed for easy maintenance, thus reducing downtime and operational cost
Superior tightness, exceeding API-2000 leak requirements
Compliant to API-2000 and ISO 28300 standards

Model 17F-TWW
Groth Pressure and Vacuum Relief Valve (PVRV) with Pipe-Away Body - Conservation Valve

Pressure settings: 0.03 psi to 1.5 psi (2.15 mbar to 103 mbar)
Vacuum settings: below 1.5 psi (103 mbar)

The new Groth Model 17F-TWW-0 PVRV design was created to exceed industry needs. Extensive research and development has produced a product that achieve both superior sealing performance and industry leading flow rates,while also allowing customers to reach required flow with a potentially smaller sized valve. The pressure vacuum relief valve is designed to protect your tank from damage created by overpressure or excessive vacuum. Costly product evaporation losses due to normal tank “breathing” are greatly reduced. The Model 17F-TWW-0 is a superior sealing valve developed to minimize fugitive emissions while providing increased protection and safety to tank equipment and on-site personnel.

Utilizes the latest 10% overpressure technology for full lift in+10% of the setpoint.
Product leakage and fugitive emissions are reduced via ultra-tight sealing
Higher flow capacity to protect from both excessive pressure and excessive vacuum build up
Peripheral and central seat guides ensure reliable, repeatable performance
Designed for easy maintenance, thus reducing downtime and operational cost
Superior tightness, exceeding API-2000 leak requirements
Compliant to API-2000 and ISO 28300 standards

Model 1200A
Groth Pressure and Vacuum Relief Valve (PVRV) - Conservation Valve

The Model 1200A pressure vacuum relief valve (PVRV) is designed to protect your tank from damage created by overpressure or excessive vacuum. Costly product evaporation losses due to normal tank “breathing” are greatly reduced. Because the Model 1200A retains toxic vapors, atmospheric contamination is minimized. This helps to provide increased fire protection and safety.

Peripheral and central seat guides ensure reliable, repeatable performance
A wide seat and air-cushion seal keeps leakage low long after the valve is put in service
Self-draining housing body and drip rings protect seating surfaces from condensate and freezing, increasing operational reliability
Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous
vapors and atmospheric moisture
Compliant to API-2000 and ISO 28300 standards

Model 1201B
Groth Pressure and Vacuum Relief Valve (PVRV) - Conservation Valve

The 1201B series PVRV is designed to protect your tank from damage created by overpressure or excessive vacuum. Costly product evaporation losses due to normal tank “breathing” are greatly reduced. Because the valve retains toxic vapors, atmospheric contamination is minimized. This helps to provide increased fire protection and safety. The 1201B Pressure/Vacuum Relief Valve is a spring-loaded version of the 1200A PVRV for use at pressures of 1 PSIG and above.

Peripheral and central seat guides ensure reliable, repeatable performance
A wide seat and air-cushion seal keeps leakage low long after the valve is put in service
Self-draining housing body and drip rings protect seating surfaces from condensate and freezing, increasing operational reliability
Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous
vapors and atmospheric moisture
Compliant to API-2000 and ISO 28300 standards

Model 1202B
Groth Pressure and Vacuum Relief Valve (PVRV) - Conservation Valve

The 1202 series PVRV is designed to protect your tank from damage created by overpressure or excessive vacuum. Costly product evaporation losses due to normal tank “breathing” are greatly reduced. Because the valve retains toxic vapors, atmospheric contamination is minimized. This helps to provide increased fire protection and safety. The 1202B Pressure/Vacuum Relief Valve is a spring-loaded version of the 1200A PVRV for use at vacuums of 1 PSIG and above.

Peripheral and central seat guides ensure reliable, repeatable performance
A wide seat and air-cushion seal keeps leakage low long after the valve is put in service
Self-draining housing body and drip rings protect seating surfaces from condensate and freezing, increasing operational reliability
Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous
vapors and atmospheric moisture
Compliant to API-2000 and ISO 28300 standards

Model 1203A
Groth Pressure & Vacuum Relief Valve (PVRV) - Conservation Valve

Model 1203A PVRV is designed to protect your tank from damage created by overpressure or excessive vacuum. Costly product evaporation losses due to normal tank “breathing” are greatly reduced. Because the Model 1200A retains toxic vapors, atmospheric contamination is minimized. This helps to provide increased fire protection and safety. The 1203A Pressure/Vacuum Relief Valve is a spring-loaded version of the 1200A PVRV for use at pressures or vacuums of 1 PSIG and above.

Peripheral and central seat guides ensure reliable, repeatable performance
A wide seat and air-cushion seal keeps leakage low long after the valve is put in service
Self-draining housing body and drip rings protect seating surfaces from condensate and freezing, increasing operational reliability
Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous
vapors and atmospheric moisture
Compliant to API-2000 and ISO 28300 standards
Data Sheet

Model 1220A
Groth Pressure & Vacuum Relief Valve (PVRV) w/ Pipe-Away - Conservation Valve

Pressure ranges below 1 PSIG
Vacuum ranges below 1 PSIG

Model 1220A PVRV is used for pressure and vacuum relief where vapors must be piped away. Escaping vapors are piped away through a flanged outlet connection. This helps to provide increased fire protection and safety.

The flanged outlet connection allows escaping vapors to be piped away, instead of released
directly to the atmosphere
Peripheral and central seat guides ensure reliable, repeatable performance
A wide seat and air-cushion seal keeps leakage low long after the valve is put in service
Self-draining housing body and drip rings protect seating surfaces from condensate and freezing, increasing operational reliability
Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous
vapors and atmospheric moisture
Compliant to API-2000 and ISO 28300 standards

Model 1221B
Groth Pressure & Vacuum Relief Valve (PVRV) w/ Pipe-Away - Conservation Valve

Pressure ranges 1 PSIG and above
Vacuum ranges 1 PSIG and below

Model 1221B PVRV is used for pressure and vacuum relief where vapors must be piped away. Escaping vapors are piped away through a flanged outlet connection. This helps to provide increased fire protection and safety. The 1221B Pressure/Vacuum Relief Valve is a spring-loaded version of the 1220 PVRV for use at pressures of 1 PSIG and above.

The flanged outlet connection allows escaping vapors to be piped away, instead of released directly to the atmosphere
Peripheral and central seat guides ensure reliable, repeatable performance
A wide seat and air-cushion seal keeps leakage low long after the valve is put in service
Self-draining housing body and drip rings protect seating surfaces from condensate and freezing, increasing operational reliability
Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture
Compliant to API-2000 and ISO 28300 standards

Model 1222B
Groth Pressure & Vacuum Relief Valve (PVRV) w/ Pipe-Away - Conservation Valve

Pressure ranges below 1 PSIG
Vacuum ranges 1 PSIG and above

Model 1222B PVRV is used for pressure and vacuum relief where vapors must be piped away. Escaping vapors are piped away through a flanged outlet connection. This helps to provide increased fire protection and safety.

The flanged outlet connection allows escaping vapors to be piped away, instead of released directly to the atmosphere
Peripheral and central seat guides ensure reliable, repeatable performance
A wide seat and air-cushion seal keeps leakage low long after the valve is put in service
Self-draining housing body and drip rings protect seating surfaces from condensate and freezing, increasing operational reliability
Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous
vapors and atmospheric moisture
Compliant to API-2000 and ISO 28300 standards

Model 1223A
Groth Pressure & Vacuum Relief Valve (PVRV) w/ Pipe-Away - Conservation Valve

Pressure and Vacuum for 1 PSIG and above

Model 1223A PVRV is used for pressure and vacuum relief where vapors must be piped away. Escaping vapors are piped away through a flanged outlet connection. This helps to provide increased fire protection and safety. The 1223B Pressure/Vacuum Relief Valve is a spring-loaded version of the 1220A PVRV for use at pressures and vacuums of 1 PSIG and above.

The flanged outlet connection allows escaping vapors to be piped away, instead of released directly to the atmosphere
Peripheral and central seat guides ensure reliable, repeatable performance
A wide seat and air-cushion seal keeps leakage low long after the valve is put in service
Self-draining housing body and drip rings protect seating surfaces from condensate and freezing, increasing operational reliability
Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture
Compliant to API-2000 and ISO 28300 standards
Data Sheet

Model 1720A
Groth Pressure & Vacuum Relief Valve (PVRV) w/ Pipe-Away - Conservation Valve

Pressure below 2 PSIG
Vacuum below 1.5 PSIG

Groth Series 1700 relief valves are designed with inlet and outlet flanges of the same size to reduce installation costs by having smaller downstream piping. Model 1720A valves are designed for systems requiring pressure and vacuum relief.

Cushioned Air Seating
Center and peripheral pallet guiding
Self-draining body
Fluoropolymer seating diaphragms minimize sticking caused by resinous vapors and atmospheric moisture
Self draining housing body and drop rings to protect seating surfaces from condensate and freezing
Design avoids pressure or vacuum buildup due to binding or clogging of the valve
Compliant to API-2000 and ISO 28300 standards

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