Valves & Actuation
Asahi/America Type 14 Diaphragm Valves offer many combinations of body materials and elastomeric diaphragm materials. This valve is designed to resist abrasion and clogging. The path of the fluid has a smooth, streamlined flow. Slurries at low pressure that would normally clog most other valve designs easily pass thru this type of valve. Asahi/America Type 14 Diaphragm Valves are ideally suited for throttling as well as ON/OFF service in applications ranging from water treatment to chemical abrasion processes.
Features
• Position indicator standard  • 150 psi maximum @ 70°F  • Adjustable travel stop  • Pipe connections - socket, threaded or flanged  • Weir design allows for throttling  • Automation with no body modifications
Options
• Diaphragms available in FKM and Nitrile  • PVDF gas barrier on PTFE models  • Pneumatic actuators  • Stem extensions  • Limit switches  • Square operating nuts
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.                                                                                                         Â
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.
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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.