Anyị na-enyocha valvụ bọọlụ, valvụ nlele, valvụ ọnụ ụzọ, valvụ ụwa, valvụ urukurubụba, mgbochi na valvụ ọbara dị ka API6D & API 15000. Enwere ike imepụta ihe nke valves (dịka kwa ASTM A105 maka forgings, ASTM A216 WCB maka nkedo, ASTM). A351 CF8M nkedo igwe anaghị agba nchara na duplex ọkwa F51.