Valves & Actuation

The Penguin plastic gauge guard is a unique, compact, molded design consisting of two threaded fluid chambers. There is no possibility of leakage due to uneven screwed components. Each piece contains a matching groove which confines the true o-ring incorporated on the OD of the impermeable diaphragm. A bleed plug and o-ring are included in the design for proper filling or the incompressible liquid in the gauge side chamber. This prevents air entrapment, thus providing an accurate reading with no needle vibrations.

Features
• Choice of materials CPVC, PVDF or Polypropylene   • Impermeable and resilient Viton diaphragm   • 1/4" FPT instrument (gauge) connection   • 1/2" FPT bottom system connection   • No metallic fasteners to corrode

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.