Product Name: Screwed Ball Check Valve, BSPT, NPT Model NO.: Fig. 4311 Application: Industrial Usage, Water Industrial Usage Standard: DIN Flow Direction: Bidirectional Sealing Form: Rubber Sealed Function: Sfcv Rubber Lobe Pressure: Ordinary Pressure Structure: Ball Check Connection Form: Thread Material: Cast Iron Body Material: Cast Iron, Ductile Iron Ball: Aluminum+NBR / EPDM Working Pressure: Pn10, Pn16 Size: 1/2"-4" Thread: BSPT, Bsp, NPT Trademark: AHSUNVAL, MEIJI, OEM Transport Package: Wooden Cases Specification: CE, ISO HS Code: 8481300000 Product Description THREADED BALL CHECK VALVEScrewed Ball Check Valve.Class: PN10 / 16Design: API594, API6DFace to face: API594, API6D, DIN3202Testing: API598Size: DN25-DN100Body: Ductile Iron;Cover: Ductile Iron;Ball: Aluminum fully covered rubber NBR/EPDM;Bonnet Gasket: NBR, EPDM;Bonnet Bolts: Galvanized Carbon steel Class 8.8; Stainless steel AISI304/316;Body with FBE Epoxy Coating.