Pressure/Vacuum Relief Valve

The Model 1200A 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. Because the Model 1200A retains toxic vapors, atmospheric contamination is minimized. This helps to provide increased fire protection and safety.

Features

• 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

Pressure/Vacuum Relief Valve with Pressure Spring

The 1200 series 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.

Features

• 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

Pressure/Vacuum Relief Valve with Vacuum Spring

The 1200 series 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.

Features

• 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

Pressure/Vacuum Relief Valve with Pressure & Vacuum Springs

Model 1200A 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 1203B Pressure/Vacuum Relief Valve is a spring-loaded version of the 1200A PVRV for use at pressures or vacuums of 1 PSIG and above.

Features

• 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

Pressure/Vacuum Relief Valve w/ Pipe-Away

Model 1220A 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.

Features

• 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

Pressure/Vacuum Relief Valve w/ Pipe-Away & Pressure Spring

Model 1221B 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.

Features

• 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

Pressure/Vacuum Relief Valve w/ Pipe-Away/Pressure & Vacuum Springs

Model 1223A 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.

Features

• 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

Pressure Relief Valve w/ Pipe-away Feature and same-size inlet and outlet

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 1760A valves are designed for systems requiring only pressure relief.

Features

• 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

Pressure/Vacuum Relief Valve w/ Pipe-away Feature and same-size inlet and outlet

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.

Features

• 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

Pressure Relief Valve w/ Pipe-away Feature

Pressure Relief Valve Model 1260A is for use where pressure relief is required and all relieving vapors must be piped away. Tank relief, to avoid tank damage, is controlled by a spring or weight loaded pallet in the valve housing. Pressure relief valves help provide increased fire protection and safety. The Model 1260A can also be used for in-line vacuum relief where flanged inlet connection is required.Back pressure in the system must be considered when using flow curves.

Features

• 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

Pressure Relief Valve w/Pipe-away and Pressure Spring

The 1261A Pressure Relief Valve is a spring-loaded version of the 1260A PRV for use at pressures of 1 PSIG and above. See catalog for technical information.

Pressure Relief Valve – Weight Loaded

The Groth Model 2300A Emergency Relief Valve is designed to vent to atmosphere for emergency relief capacity above that supplied by a standard operating valve used on tanks, piping, and low pressure vessels. Emergency relief valves provide relief from excessive internal pressures which may cause tank damage.

Model 2300A is built of corrosion resistant material throughout. Groth’s self-closing special fluoropolymer “cushioned air” pallet with center stabilizing stem and peripheral guiding provides uniform seating and alignment. Superior performing fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture. The guides support a spun weatherhood which covers and protects the entire valve structure. As added protection against the entry of foreign matter, a mesh screen encircles the valve under the weatherhood.

Features

• Can be used for emergency relief on smaller tanks
• 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

Vacuum Relief Valve, Top Mount

The Groth Series 1300A is used when vacuum relief is the only requirement. Intake relief necessary under working conditions is achieved by a spring or weight loaded pallet. This feature reduces the possibility of tank damage due to an excessive vacuum condition. The 1300A Series helps to provide increased fire protection and safety. Valve size must be selected to perform required vacuum relief under operating and thermal conditions.

Features

• Modular Construction
• Cushioned air seating
• Fluoropolymer seating diaphragms minimize sticking caused by resinous vapors and atmospheric moisture
• Self-draining housing body and drip rings to protect seating surfaces from condensate and freezing
• Design avoids vacuum buildup due to binding or clogging of the vent

Vacuum Relief Valve, Side Mount

The Groth Model 1360A Vacuum Relief Valve is used when vacuum relief is the only requirement. The 1360A may be side mounted on the tank body or piped in. Intake relief necessary under working conditions is achieved by a spring or weight loaded pallet. The 1360A helps to provide increased fire protection and safety. Valve size must be selected to perform required vacuum relief under operating and thermal conditions.

Features

• Modular Construction
• Cushioned air seating
• Fluoropolymer seating diaphragms minimize sticking caused by resinous vapors and atmospheric moisture
• Self-draining housing body and drip rings to protect seating surfaces from condensate and freezing
• Design avoids vacuum buildup due to binding or clogging of the vent

Vacuum Relief Valve, Side Mount, Spring Loaded

The Groth Models 1361A are used when vacuum relief is the only requirement. Intake relief necessary under working conditions is achieved by a spring or weight loaded pallet. This feature reduces the possibility of tank damage due to an excessive vacuum condition. Valve size must be selected to perform required vacuum relief under operating and thermal conditions.

Features

• Modular Construction
• Cushioned air seating
• Fluoropolymer seating diaphragms minimize sticking caused by resinous vapors and atmospheric moisture
• Self-draining housing body and drip rings to protect seating surfaces from condensate and freezing
• Design avoids vacuum buildup due to binding or clogging of the vent

Pilot Operated Relief Valve w/ Vacuum Breaker

The Groth 1400 Series Pilot-Operated Relief Valves are used to replace weight-loaded or spring loaded valves in many applications to increase efficiency and reduce evaporation losses. Several advantages are obtained over the traditional valves. For example, the process pressures may be closer to the set pressure than would be considered prudent and safe with the traditional valve. Additionally, greater conservation is obtained due to minimum product loss which in turn provides increased profits.

Features

• Ease of precision settings
• Only the pilot needs to be set
• Lower profile and weight than spring operated models for high settings
• Remote pilot sensing option allows the pilot to sense the true system pressure
• Remote or manual blowdown available
• Main valve remains tight to set pressure
• Full open at 10% overpressure
• Modulating action conserves product
• Soft seating creates tight seal to conserve product and minimize valve wear
• Top entry allows valve to be services without removal from mounting

Pilot Operated Relief Valve w/ Vacuum Breaker

The Groth 1400 Series Pilot-Operated Relief Valves are used to replace weight-loaded or spring loaded valves in many applications to increase efficiency and reduce evaporation losses. Several advantages are obtained over the traditional valves. For example, the process pressures may be closer to the set pressure than would be considered prudent and safe with the traditional valve. Additionally, greater conservation is obtained due to minimum product loss which in turn provides increased profits.

Features

• Ease of precision settings
• Only the pilot needs to be set
• Lower profile and weight than spring operated models for high settings
• Remote pilot sensing option allows the pilot to sense the true system pressure
• Remote or manual blowdown available
• Main valve remains tight to set pressure
• Full open at 10% overpressure
• Modulating action conserves product
• Soft seating creates tight seal to conserve product and minimize valve wear
• Top entry allows valve to be services without removal from mounting

Pilot Operated Relief Valve

The Groth 1400 Series Pilot-Operated Relief Valves are used to replace weight-loaded or spring loaded valves in many applications to increase efficiency and reduce evaporation losses. Several advantages are obtained over the traditional valves. For example, the process pressures may be closer to the set pressure than would be considered prudent and safe with the traditional valve. Additionally, greater conservation is obtained due to minimum product loss which in turn provides increased profits.

The 1430 is similar to the 1400 but without a vacuum breaker.

Features

• Ease of precision settings
• Only the pilot needs to be set
• Lower profile and weight than spring operated models for high settings
• Remote pilot sensing option allows the pilot to sense the true system pressure
• Remote or manual blowdown available
• Main valve remains tight to set pressure
• Full open at 10% overpressure
• Modulating action conserves product
• Soft seating creates tight seal to conserve product and minimize valve wear
• Top entry allows valve to be services without removal from mounting

Pilot Operated Relief Valve

The Groth 1400 Series Pilot-Operated Relief Valves are used to replace weight-loaded or spring loaded valves in many applications to increase efficiency and reduce evaporation losses. Several advantages are obtained over the traditional valves. For example, the process pressures may be closer to the set pressure than would be considered prudent and safe with the traditional valve. Additionally, greater conservation is obtained due to minimum product loss which in turn provides increased profits.

The 1460 is similar to the 1420 but without a vacuum breaker.

Features

• Ease of precision settings
• Only the pilot needs to be set
• Lower profile and weight than spring operated models for high settings
• Remote pilot sensing option allows the pilot to sense the true system pressure
• Remote or manual blowdown available
• Main valve remains tight to set pressure
• Full open at 10% overpressure
• Modulating action conserves product
• Soft seating creates tight seal to conserve product and minimize valve wear
• Top entry allows valve to be services without removal from mounting

Pressure/Vacuum Valve & Flame Arrester

The Model 8800A Pressure/Vacuum Valve & Flame Arrester combination units are designed to protect your tank from damage created by over- pressure or excessive vacuum, at the same time that they provide protection from externally caused sources of heat and ignition. The result is increased fire protection and safety.

End of Line

• Gas Group: NEC D, IEC IIA
• Pre-Ignition Pressure = Atmosphere

Features

The Model 8800A Pressure/Vacuum Relief Valve offers Groth’s special “cushioned air” seating. Superior performing fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture. Self draining housings and drip rings protect seating surfaces from condensate and freezing.

The Groth Model 8800A is a combination of the 1200A Pressure Vacuum Relief Valve and Groth Model 7618 Flame Arrester. The superior Buna-N seating diaphragms are standard on the valve to insure extra tight sealing to prevent sludge vapors escaping. Self draining housing body and drip rings protect seating surface from condensate and freezing. The 1200/7618 helps protect your tank from damage created by overpressure or excessive vacuum, at the same time it provides protection from externally caused sources of heat and ignition. The result is reduced emissions level and increased fire protection and safety.

• Cushioned Air Seating
• Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture
• Self draining housing and drip rings
• Spiral-wound, crimped ribbon flame element
• Modular Construction

Pressure/Vacuum Valve & Flame Arrester (pipe-away)

The Model 8820A combination units are used for pressure and vacuum relief where vapors must be piped away. They are designed to protect your tank from damage created by overpressure or excessive vacuum, at the same time that they provide protection from externally caused sources of heat and ignition. The result is reduced emissions level and increased fire protection and safety.

The Groth model 8820A is a combination of the 1220A Pressure Vacuum Relief Valve and Groth Model 7618A Flame Arrester. The superior Buna-N seating diaphragms are standard on the valve to insure extra tight sealing to prevent sludge vapors escaping. Self draining housing body and drip rings protect seating surface from condensate and freezing.

Features

The Model 8820A Pressure/Vacuum Relief Valve with flanged pipe-away outlet offers Groth’s special “cushioned air” seating. Superior performing fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture. Self draining housings and drip rings protect seating surfaces from condensate and freezing.

End-of-Line

Flanged Outlet with or without Discharge Piping

• Gas Group: NEC D, IEC IIA
• Operating Temperature <= 140°F (60°C)
• Pre-Ignition Pressure = Atmosphere
• Discharge Piping Length <= 10 pipe diameters

In-Line

• Gas Group: IEC IIA1, Methane (includes most Biogas applications)
• Operating Temperature <= 140°F (60°C)
• Pre-Ignition Pressure <= 1 psig
• Run-up Length <= 50 pipe diameters (2”)
• Run-up Length <= 20 pipe diameters (3”)
• Run-up Length <= 10 pipe diameters (4”–12”)

Pilot Operated Valve

The Groth 1600 Series valves provide safe, dependable, and accurate low pressure and/or vacuum protection. Seals in accordance with API 2000 requirements for Pilot Operated Relief Valves. This design prevents fugitive emissions and conserves stored product. Rated flow at 10% overpressure provides the ability to operate closer to the tank MAWP, increasing the operating range of the process. This reduces the need for a large overpressure and saves product, which translates into profit. Flexibility in terms of film or o-ring seat and snap or modulating action allows product customization to specific application requirements. The Model 1662A incorporates a vacuum breaker.

Pressure/Vacuum Relief Valve w/ Pipe-Away & Vacuum Spring

Model 1222B 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.

Features

• 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

Pressure Relief Valve – Spring Loaded

The Groth Model 2301A Emergency Relief Valve is designed to vent to atmosphere for emergency relief capacity above that supplied by a standard operating valve used on tanks, piping, and low pressure vessels. Emergency relief valves provide relief from excessive internal pressures which may cause tank damage.

Model 2301A is built of corrosion resistant material throughout. Groth’s self-closing special fluoropolymer “cushioned air” pallet with center stabilizing stem and peripheral guiding provides uniform seating and alignment. Superior performing fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture. The guides support a spun weatherhood which covers and protects the entire valve structure. As added protection against the entry of foreign matter, a mesh screen encircles the valve under the weatherhood.

Features

• Can be used for emergency relief on smaller tanks
• 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

Pressure/Vacuum Relief Valve

The Groth Model 12F 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 required flow with a potentially smaller-sized valve. Utilizing 10% overpressure technology allows customers to set their valves closer to the required flowing pressure minimizing product loss and maximizing profits. 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 are superior sealing valves developed to minimize fugitive emissions while providing increased protection and safety to tank equipment and on-site personnel.

Features

• Flow capacities in values between 10-100% or greater
• 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

Pressure/Vacuum Relief Valve

The Groth Model 12E 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 required flow with a potentially smaller-sized valve. Utilizing 10% overpressure technology allows customers to set their valves closer to the required flowing pressure minimizing product loss and maximizing profits. 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 12E are superior sealing valves developed to minimize fugitive emissions while providing increased protection and safety to tank equipment and on-site personnel.

Features

• Flow capacities in values between 10-100% or greater
• 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