Valves & Actuation

Filterchem Air-Operated Valves are ideal for automated control of liquids, featuring fail-safe operation with normally-closed as the standard configuration. This valve requires a minimum of 30 psi air pressure for actuation. Similar in design to that of the Filterchem foot-operated valve, this valve is an economical and compact alternative to more expensive air-operated diaphragm or ball valves. Filterchem Air-Operated valves are of molded construction from either Type 1 PVC or natural polypropylene, and contain the following internal components: Viton® O-ring seal, high-density polyethylene piston and a Kynar®-coated return spring.
Features
• 125 psi @ 75°F for all models   • PVC valves for applications up to 140°F   • Polypropylene valves are for applications ranging to 180°F   • Mounting holes in base plate - mount valve horizontal or vertical

Air-Operated Diaphragm
Series BSDA miniature air-operated diaphragm valves are designed for pressure applications with highly-corrosive or ultra-pure liquid systems when space is critical. The valve is ideal for a broad range of industrial applications, from electronics to chemical plants, commercial laundries, car wash operations etc. The standard valves are air pressure-to-open with spring return-to-close. Liquid line pressure assists in opening the valve. Not designed for vacuum service.                                                                                                          

Normally-Closed Operation
A 3-way air solenoid valve connection to the 1/8" NPT port is required to actuate the diaphragm valve. When air pressure (40 to 100 psi) is applied, the diaphragm valve opens and, when removed, spring force closes the valve.
 

Materials of Construction
With the series BSDA air-operated diaphragm valves, the standard diaphragm material is a combination of PTFE on the wetted side backed up with Viton® for strength and flexibility. Body materials available are PVC, CPVC, Polypropylene, PVDF and Teflon®.

The upper air section is always PVC.