Flange Weir Diaphragm Valve

The KOSEN Weir Type Diaphragm Valves has self draining function to ensure no residue and make the pipeline cleaner and healthier. The valve body has various materials, such as cast iron, ductile iron, cast steel, forged steel and lining. Lining materials include: Glass, ETFE, PFA, PVDF, Halar rubber, which can be specially processed according to needs. The unique valve cover patent design prevents the diaphragm from being too tight and the pressure is too high, so that the diaphragm is in normal working condition. The seal of the diaphragm can be zero leakage of the valve

Technical Specification
Normal Size Range: 1/2"-16"
Normal Pressure Rating: PN10~PN16, CLASS150
Operation: Handwheel, Pneumatic, Electric
Temperature Range: -29~150 Degree C

Standards compliance
Design & Manufacture: BS 5156-85, MSS SP-88, GB 12239-89
Face to Face Dimension: BS 5156-85, ANSI B16.10, GB 12221-85, DIN 3202
Flanged Dimension: BS 5156-85, ANSI B16.5, EN 1092, GB/T 17421-98
Inspect & Test: BS 5156, MSS SP-82, GB/T 13927

Component Materials
Body / Bonnet: Cast Iron, Ductile Iron, Cast Steel, Stainless Steel & Duplex
Lining (Optional): 
Fluorine -- PTFE, FEP, PCTFE, PVDF, TFE, PFA, RPP, PO
Rubber  -- NR, BR, IIR, CR, EPDM, CSPE, FKM, SI
Diaphragm: Rubber 
Compressor / Disc: Cast Iron, Ductile Iron, Cast Steel, Stainless Steel
Stem: Carbon Steel & Stainless Steel
Handwheel: Iron & Steel