日本Ihara气动隔膜阀DVF-4VF-NC-EP-C-B 日本Ihara气动隔膜阀DVF-4VF-NC-EP-C-B 日本Ihara气动隔膜阀DVF-4VF-NC-EP-C-B 日本Ihara气动隔膜阀DVF-4VF-NC-EP-C-B Product Made in Japan Manufacturer:  IHARA SCIENCE CORPORATION Model: DVF Series The KAIHEI-KUN Series features pipe joints with internal metal diaphragms offering lighter weights, compact size, and outstanding cost-performance compared to conventional metal diaphragm valves. Thanks to a new concept featuring pipe joints as the key element, valve functions are on the same level as the existing metal diaphragm valve DVE Series while realizing outstanding lightweight. Nominal Size 1/4” 3/8″&1/2″ Working Pressure Vac. ~1 MPa Working Temperature Range -10~+80°C Cv Value (*1) 0.3 0.7 Connection Fittings(*2′ VTF (Metal Gasket Seal Type Fittings) BI-LOK (Double Pressure Ring) (*1) VTF (male) connection. Varies according to connection and size. (*2) Can also be used with other connections. Please contact our Sales Division. Nominal Size 1/4” 3/8″ & 1/2″ Weight (*,) (Manual Valve) (Manual Valve) 115g 260g (Automatic Valve) (Automatic Valve) 235g 475g Inner Volume (*3) 1.3c 4.9cc Operation Durability’*4) (Manual Valve More than 100,000 times (Automatic Valve1/4″) More than 2.000.000 times (Automatic Valve3/8″, 1/2″) More than 2,000.000 times (*3) VTF (male) connection: Value in valve-open state. (*4) 1MPa: Our company’s test values in N2 gas insertion test. Part Name Material 1 Body SUS316L 2 Disk PCTFE 3 Diaphragm SUS631/Co-Ni Alloy 4 Diaphragm Retainer SUS304 5 Bonnet SUS304 6 Handle Resin Treatment 7 Bonnet SCS13A 8 Cover A5056 VTF (Male) (mm) Model Size L H w DVF-4VM 1/4″ 58 38.2 40 DVF-8VM 1/2″ 76 41.3 40 VTF (Female) (mm) Model Size L H w DVF-4VF 1/4″ 70.6 38.2 40 DVF-8VF 1/2″ 90 41.3 40 BI-LOK (mm) Model Size L H w DVF-4D 1/4″ 64 38.2 40 DVF-6D 3/8″ 77 41.3 40 DVF-8D 1/2″ 82.6 41.3 40 Optional Specifications: with a Bracket  (mm) Size h A B C 1/4″ 11 26 26 25.4 3/8″ 16 34 32 28 1/2″ 16 34 32 28