API6D Forged top entry trunnion mounted ball valves are generally manufactured with the features of double block and bleed (DBB), cavity relief, bi-directional, fire safe and secondary metal to metal seated etc. The DBB design can block both upstream and downstream media. And when the pressure in the middle cavity is greater than the seat spring force, the seat will be pushed open to release the pressure inside the chamber to ensure safety. Huanqiu has various actuator types: gear, lever, electric, hydraulic, pneumatic, gas over oil. 

Design features of API6D Forged top entry trunnion mounted ball valves

Size range: 1.1/2" to 56"

Rating class: API 6D: ASME 150-300-600-900-1500-2500 ANSI

Materials: Forged Body & Forged Bonnet A105, A350 LF2, A182 F304, F316, F304L, F316L, F51, F53

Seat Material: Soft seated PTFE, RPTFE, Nylon, PEEK, PPL, Delrin, Devlon, PCTFE, PTFE Glass Filled, PTFE Carbon Filled; Metal Seated with Tungsten Carbide Coating or Chrome Carbide Coating

Self relieving seats or double piston effect seat (DIB-1 or DIB-2)

Anti blow-out stem & antistatic device

Fire safe API 6FA - API 607 – ISO 10497

Designed, manufactured and tested according to API 6D, ASME B 16.34, E.D. 2014/68/EU (PED), EN 12516

End connections: flanged (ASME B16.5 - B16.47); BW (ASME B16.25)Hub

Materials in accordance to NACE MR 01.75

Full in-line maintenance either with vertical and horizontal stem