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APCO Vacuum Relief/Air Inlet Valves (AVR)
Brand: Apco
Vacuum Relief/Air Inlet Valves are normally closed valves.
When the system pressure becomes negative, the valve opens, allowing air into the system to prevent a vacuum from building.
When system pressure returns to positive, the Vacuum Relief/Air Inlet Valve closes air tight.
Standard Vacuum Relief/Air Inlet Valves are designed to open with a minimal, 1/4 psi pressure differential across the orifice. Higher or lower relief settings are available to suit the application.
Specifications
Brand
Body Material
- Cast Iron, Ductile Iron, Carbon Steel, 316 Stainless Steel
Body Type
- Series 1500
Pressure Rating
- ASME Class 125 & 250 Class
Size Range
- 3-36” (80-900 mm)