Kina, API 600, portventil, boltkappe, fremstilling, fabrik, pris, fleksibel, solid kile, portventil, boltkappe, flanger, RF, RTJ, trim 1, trim 8, trim 5, metal, sæde, fuld boring, Stigende stamme, ikke-stigende stamme, OS&Y, ventilmaterialer har kulstofstål, rustfrit stål, A216 WCB, A351 CF3, CF8, CF3M, CF8M, A352 LCB, LCC, LC2, A995 4A. 5A, A105(N), F304(L), F316(L), F11, F22, F51, F347, F321, F51, Alloy 20, Monel, Inconel, Hastelloy, Aluminium Bronze og anden speciallegering. Tryk fra klasse 150LB, 300LB, 600LB, 900LB, 1500LB, 2500LB