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Flange and Valve Gaskets

Asahi Flanged Diaphragm Valve (Type 14,15,G)

Description

Diaphragm valves offer many combinations of body materials and elastomeric diaphragm materials. The valve design is abrasion-resistant and non-clogging. When the diaphragm, which is connected to the stem of the valve by a compressor, is pulled away from the bottom of the valve body or weir, the path of the fluid has a smooth, streamlined flow. Slurries at low pressure that would normally clog most other valve designs easily pass through a diaphragm valve. The valve has a top-entry design, allowing in-line maintenance; it is suitable for throttling and on/off service in applications ranging from water treatment to chemical abrasion processes. Diaphragm valves are operated manually, electrically, or pneumatically.

Features and Benefits

  • Flanged (ANSI) face-to-face dimensions are equivalent to most commonly used metallic valves
  • Rugged body and bonnet are of solid thermoplastic for maximum corrosion resistance
  • Uniquely designed body and bonnet together with diaphragms of new sealing designs by computer dynamic analysis for superior sealing
  • Weir design for excellent throttling
  • Bubble-tight sealing, even in applications such as slurries or suspended particles
  • Bonnet seals to protect internals from corrosive environments
  • Built-in travel stop to prevent over-tightening or compressive strain on diaphragm
  • Integrally molded bottom stand for simple yet firm panel mounting
  • Indicator at the top for indication of valve position and prevention of over-tightening
  • PVDF Gas Barrier, which protects EPDM backing from gas permeation, is standard for PVDF valves
  • Low profile
  • 1/2" - 2" in bayonet structure to connect compressor and diaphragm - easy diaphragm replacement
Materials
        Sizes: 1/2" - 4"
        Body Materials: PVC, CPVC, PP and PVDF
        Bonnet Materials: PVC, PP, PPG and PVDF
        Diaphragms: EPDM and PTFE
        Also available in other materials such as nitrile and FKM
Materials
        Sizes: 5" - 6"
        Body Materials: PVC, PP and PVDF
        Bonnet Materials: PVC, PP, PPG and PVDF
        Diaphragms: EPDM and PTFE
        Also available in other materials such as nitrile and FKM
Materials
        Sizes: 8" -10"
        Body Materials: PVC, PP and PVDF
        Bonnet Materials: PVC, PP, PPG and PVDF
        Model: Flanged (ANSI)
        Diaphragms: EPDM and PTFE
        Also available in materials such as nitrile and FKM

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