Valves & Actuation

Manufactured from glass reinforced polypropylene for strength and durability-will never rust or corrode. Self-aligning ball rotates freely against Teflon® seats. Unique body-to-flange design allows for low torque on/off operation. Viton® o-ring stem seal and EPDM o-ring body seal. Available with blue Norwesco handle or blank yellow handle. Pressure rated at 125 PSI @ 70°F. All valves tested by air pressure under water.

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.