Seat is made of PTFE reinforced with 25% glass fibre or PEEK . PTFE with 25% glass fibre can gain better performances normally used for class 800 ball valves.
Design and manufacture conform to BS5351 , MSS SP-118 ;
Test and inspection conform to : API 598 , GB/T13927 , JB/T9092
Main materials:
A105 , LF2 , 304(L) , 316(L) , F347 , F321 , F51 , Monel , 20 Alloy