PVDF Flanged Diaphragm Valve

Type-14 Flanged Diaphragm Valve (1/2 - 4 in.)

The type-14 diaphragm valve features improved body to bonnet sealing performance, visual position indication, weir design for excellent throttling capabilities and built in travel stop to prevent over-tightening and eliminate compressive strain. Bubble-tight sealing can be achieved even in tough applications containing suspended particles or slurries.

Asahi's type-14 diaphragm valve features a layered EPDM/PTFE diaphragm which can accept the addition of a PVDF gas barrier for aggressive chemicals such as sodium hypochlorite. These aggressive chemicals produce an off-gas that can permeate the typical laminated PTFE layer and actually become delaminated in this highly corrosive environment leading to a potentially hazardous situation. The type-14's three-layer diaphragm, includes a gas barrier layer, which prevents this from ever occurring. The type-14 diaphragm valve body is of one-piece molded construction and is not fabricated. For maximum corrosion resistance, the type-14 diaphragm valve's rugged body and bonnet are manufactured from solid thermoplastic materials. The type-14 diaphragm valve can be pneumatically or electrically actuated.

Ideal Applications Include:

Throttling, slurry lines, chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, semiconductor manufacturing

Features & Benefits:

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, position indicator at top of valve, PVDF gas barrier (protects EPDM backing from gas permeation) standard on all valve with PTFE diaphragm.

• 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 all valves with PTFE Diaphragm
  
• Low profile
  
• Bayonet structure to connect compressor and diaphragm easy diaphragm replacement
  

Type-15 Diaphragm Valve (5 - 6 in.)

Multiturn valve good for flow control and use with viscous/slurry lines due to their high resistance to clogging. These valves have a uniquely designed body and bonnet, as well as a diaphragm with new sealing designs, by computer aided analysis for superior sealing.

Ideal Applications Include:

Throttling, slurry lines, chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, semiconductor manufacturing

Features & Benefits:

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, position indicator at top of valve, PVDF gas barrier (protects EPDM backing from gas permeation) standard on all valve with PTFE diaphragm.

• Flanged face-to-face dimensions are equivalent to those of Type-G diaphragm valve
  
• Rugged body and bonnet are of solid thermoplastic for maximum corrosion resistance
  
• Bubble-tight sealing, even in applications such as slurries or suspended particles
  
• Weir design for excellent throttling
  
• Uniquely designed body and bonnet together with diaphragms of new sealing designs by the state-of-the-art computer aided analysis for superior sealing
  
• Bonnet seals to protect internals from corrosive environments
  
• Built-in travel stop to prevent diaphragm from being over-tightened
  
• Indicator at the top for valve position and prevention of over-tightening
  
• PVDF gas barrier, which protects EPDM backing cushion from gas permeation, is standard for all valves with PTFE diaphragm
  

Type-G Flanged Diaphragm Valve (8 - 10 in.)

Multiturn valves good for flow control and use with viscous/slurry lines due to their high resistance to clogging. The Type-G is the largest of the Asahi diaphragm valves, available only in 8 and 10 in. sizes with flanged end connections.

Ideal Applications Include:

Throttling, slurry lines, chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, semiconductor manufacturing

Features & Benefits:

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, position indicator at top of valve, PVDF gas barrier (protects EPDM backing from gas permeation) standard on all valve with PTFE diaphragm.

• Rugged body and bonnet of solid thermoplastic for maximum corrosion resistance
  
• 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 diaphragm from being over-tightened
  
• Indicator at the top for valve position
  
• PVDF gas barrier, which protects backing cushion from gas permeation, is standard for all valves with PTFE diaphragm
  

Asahi Part Numbers: 1467005, 1467007, 1467010, 1467012, 1467015, 1467020, 1467025, 1467030, 1467040, 1467050, 1467060, 1135080, 1135100, 1468005, 1468007, 1468010, 1468012, 1468015, 1468020, 1468025, 1468030, 1468040, 1468050, 1468060, 1136080, 1136100