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avr
avr

APCO Vacuum Relief/Air Inlet Valves (AVR)

Description

Technical Information

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.

Body material:
Cast iron, ductile iron, carbon steel, 316 stainless steel

 

Body styles:
Series 1500

 

Pressure rating:
ASME 125 and 250 class

 

Size rage:
3-36” (80-900 mm)