Combination Air Valves perform the functions of an Air/Vacuum Valve (exhaust large quantities of air on start-up, admits air on shut-down) and Air Release Valves (release air continuously during operation) to maintain system efficiency and prevent pipeline surges.

The AVV Dual Body Combination Air Valve combines the functions of both an Air/Vacuum Valve to expel large volumes of air during filling or draining of the pipeline, along with an Air Release Valve to release small quantities of air during normal operation.

Combination Air Valves perform the functions of an Air/Vacuum Valve (exhaust large quantities of air on start-up, admits air on shut-down) and Air Release Valves (release air continuously during operation) to maintain system efficiency and prevent pipeline surges.

Val-Matic manufactures the most comprehensive Air Relief Valve product line offered today. From the smallest simple lever air release valve to the largest surge-suppression combination air valve, all are provided standard with Type 316 stainless steel trim and floats. All Val-Matic Air Valve floats are unconditionally guaranteed.

The APCO ASU High Performance Combination Air Valve introduces an innovative concept in air valve technology. Proven with extensive field experience on tough applications, the ASU valve has demonstrated improved performance, reduced maintenance and lower cost for overall reliability on clean fluids or sewage and dirty service applications.

APCO Single Body Combination Air Valves combine the features of Air/Vacuum Valves and Air Release Valves and are installed on high points of a system.

The air & vacuum component is designed to automatically discharge or admit large volumes of air during the filling or draining of a pipeline or piping system. This valve will open to relieve negative pressures whenever water column separation occurs.

The COMBOAIR® universal air release valve performs the functions of both a pressure air release valve and an air & vacuum valve in one compact design that reduces cost and saves space.

BERMAD C30 is a high quality combination air valve for a variety of pipe networks and operating conditions. It evacuates air during pipeline filling, allows e cient release of air pockets from pressurized pipes, and enables large volume air intake in the event of network draining.

Crispin Air Release, Air & Vacuum and Universal Combination Valves meet or exceed ANSI/AWWA C512 Standards. Combination Air Valves consist of Air and Vacuum Valves and a Pressure Valve mounted in a single body, providing the integrity of a single body casting while permitting each valve of the combination to operate as a separate unit.