Our check valves are designed to prevent reverse flow. Concentric and eccentric styles as well as our tapered disk design are available for horizontal, vertical applications and are working well without leaking while getting a return pressure. Our special designed check valve can be using for many applications in such as food, dairy, beverage, pharmaceutical, chemical, and many other industries.The materials are offered for food, dairy, beverage, pharmaceutical, chemical, and many other industries.Specifications:body:ss 316. Ss304 and ss316l are required based on big volume.Fully precision machined by cnc machine.Angle design make the biggest flowing liquid as well as for disk easy open and close.Connection: clamp end, weld end, male end and female end are available from 1/2 quot, 3/4 quot up to 4 quot.Connection: weld end are available the tubing according to 3a, sms, rjt(bs), din 11851.Middle clamp designed are available from 1/2 quot, 3/4 quot up to 3 quot.Middle flange designed are available from 1/2 quot, 3/4 quot up to 4 quot.Type of ends available:3a: clamp, weld, bevel male and female are available from 1/2 quot up 4 quotsms: weld end, male and female end are available from dn25 up to dn104.Din: weld end, male and female end are available from dn28, dn34, dn52, dn70, dn85 and dn101.6, dn104.I-line: available from 1 quot up to 4 quot.Spring:stainless steel sanitary both closing design, both opening design is required.Seal ring of stem:epdm. Viton or silicon is required.Body o-ring:nbr or epdm. Viton is required.Working temperature:-10o ~ 120o (epdm seal)features:opening pressure:1/2 quot-0.09 bar3/4 quot-0.23 bar1 quot-0.75 bar1.5 quot-1.3 bar2 quot-0.44 bar2.5 quot-0.68 bar3 quot-0.33 bar4 quot-0.42 barworking pressure:open pressure as above and max. Working pressure 10 bar. Each pc by shrink, 120pcs per carton, finally in plywood box