Brochure | January 29, 2008

Brochure: Combination Sewer Valve

Source: Crispin Valve
Air & Vacuum Sewer Valves and Pressure Sewer Air Release Valves are piped together to perform a dual function at the high point on a line. After the Air & Vacuum Sewer Valve relieves the large volume of air in the line and seats, the Pressure Sewer Valve continues to release entrapped air and gas accumulations.