Asahi diaphragm valves offer many combinations of body and elastomeric diaphragm materials and are abrasion resistant / non-clogging.
When the diaphragm — connected to the valve stem by a compressor — is pulled from the bottom of the valve body, the path of the fluid has a smooth, streamlined flow. Slurries at low pressure which would normally clog many other valve types, easily pass through a diaphragm valve.
Asahi diaphragm valves isolate the bonnet and working parts from the line fluid; making only the body diaphragm materials a consideration for application compatibility. Furthermore, the valve is a top-entry design, allowing in-line maintenance.
The valve is suitable for throttling and on/off service in applications ranging from water treatment to chemical abrasion processes. Asahi diaphragm valves can be operated manually, electrically, or pneumatically.
Asahi Type 14 Diaphragm Valve
The Asahi Type-14 diaphragm valve is available in PVC, CPVC, PP and PVDF and features improved body to bonnet sealing performance, visual position indication, a weir design for excellent throttling capabilities and a 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.
The 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.
For maximum corrosion resistance, the Type-14 diaphragm valve‘s rugged body and bonnet are manufactured from solid thermoplastic materials and can be pneumatically or electrically actuated.
|Sizes||0.5 – 4inch|
|Bodies||UPVC, CPVC, PP & PVDF|
|Diaphragm||EPDM & 3-Layer EPDM/PVDF/PTFE
Nitrile & FKM also available
|Body Type||True Union (0.5 – 2inch)
Flanged (0.5 – 4inch)
|End Connectors||PVC, CPVC: IPS socket, flanged or threaded
PP, PVDF: IPS & metric (DIN) socket, threaded, butt or flanged
|Bonnet||PVC, PP, PPG and PVDF|