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Groth Biogas - Model 8820A -Pressure Vacuum Valve and Flame Arrester Pipe-Away
The 8820A Pressure Vacuum Valve combines a pressure/vacuum relief valve and a flame arrester to provide effective pressure and vacuum relief where vapors need to be piped away. This system is designed to protect tanks from damage due to overpressure or excessive vacuum while simultaneously offering protection against external heat and ignition sources. By reducing emission levels and enhancing fire protection, this device ensures both safety and environmental compliance. Equipped with superior fluoropolymer and Buna-N seating diaphragms, the valve minimizes vapor leakage and sticking. The innovative design includes self-draining housings and drip rings to shield the seating surfaces from condensate and freezing, thus guaranteeing reliable operations in diverse environmental conditions. This product is tailored for the biogas industry, addressing applications in municipalities, food and beverage processing, dairy farms, and landfills.
The Groth Pressure Vacuum Valve & Flame Arrester Pipe-Away 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 8820A is a combination of the 1220A 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.
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”)
Specs
- Sizes: 2” (DN 50) through 12” (DN 300)
- Pressure Settings 0.5oz/in2 to 15 psig
- Vacuum Settings: 0.5 oz/in2 to 12 psig
- Materials: Aluminum, Carbon Steel, Stainless Steel and other materials
Options
- Buna-N, Fluoropolymer, FKM and other seating diaphragms
The Model 8820 Pressure/Vacuum Relief Valve with flanged pipe-away outlet offers Groth Biogas’ 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.