Usmani Valves spring loaded disc check valves - non return valve feature a wafer type, compact and rugged design cast carbon steel (astm a 216 gr. Wcb) or stainless steel (astm a 351 gr. Cf8/cf8m/cf3/cf3m/ss304/ss316/ss304l/ss316l) construction and are suitable for any process liquid, air, gas, steam etc.
The single disc check valve (wafer type single disc check valve) consists of four main components: the body, a disc, a star guide and a spring. The disc check valves are opened by the pressure of fluid and closed through compression spring as soon as flow stops thus preventing reverse flow.
The design of wafer design, sandwich type, flangeless single disc spring loaded check valves allows them to be installed between any flanges of different standard and in any position; including vertical pipelines where the fluid flows downwards.
Wafer type spring loaded disc check valves is also available with zero leakage by the use of soft seat. Usmani valves has cover disk check valve up to 6” (dn150) size and pressure rating up to pn40.
Usmani valves a leading spring loaded disc check valve manufacturer, disc check valve exporter, stockist, importer, supplier. Flangeless - wafer - sandwich type disco check valves, non return valve - nrv.
|Body||Astm a 361 gr cf8 | cf8m | cf3 | cf3m|
|Disc||Ss 304 | ss 316|
|Spring retainer||Aisi 304 | aisi 316|
|Seat||Metal to metal | epdm | nitrile | ptfe|
|Insp & test std||Api 598|
|Ends|| Wafer type for 15 mm to 200 mm|
Screwed end for 15 mm to 100 mm
|Hyd-test pressure|| Body : 854 psig (60 kg/cm ²)|
Seat : 569 psig (40 kg/cm ²)
|Size range||15 mm to 200 mm|