Stainless Steel Spring Loaded Check valveThread/screw end BSP/BSPT/NPT/DIN/JIS/G/RC Product Description :1) Spring loaded Lift type Non return Valve2) Size: 1/2''-4''(DN15-DN100)3) Material: CF8(SS304), CF8M(SS316), DIN1.4408/1.4308 etc4) Threaded end type: BSP, NPT, PT......