wellhead and christmas tree;2000~20000PSI Tubing headThe equipment is designed and manufactured in ... sulfur gas production wellhead consists of bottomflange, upper flange, tubing head, brake valve, needle valve, small cross valve, ... DD,EE,FF Rated Working Temperature: K,L,P,R,S,T,U,V Whole connection mode: flange, ... plate brake valve , wedge brake valve Product Specification Level: PSL1~PSL4 Tubing head