RSF VALVE is aleading manufacturer of oil and gas industry valves, we have more than 15yearsexperience in producing top entry trunnion mounted ball valve.

The API 6D StemExtension Top Entry Trunnion Mounted Ball Valve is one kind of oil and gasindustry valves. It has two floating seats with springs loaded, in which theball is fixed at two pivot points, and the process pressure pushes the upstreamseat against the ball's sealing surface. This design applies continuouspressure against a trunnion mounted ball after the ball isinstalled. The API 6D Stem Extension Top Entry Trunnion MountedBall Valve is widely used in oil and gas industry.

In trunnion typeof ball valve family, one pc forged body top entry trunnion ball valve avoidsthe leaking risk from the connection between body and closure. The otheradvantage of top entry trunnion ball valve design is it makes the emergencyon-line maintenance to be easier and quicker, because the valve ball needn’t tobe removed from pipe line. One the other hand, the Stem Extension TopEntry Trunnion Type Ball Valve is very costly, because it requests to machineout its valve body from one pc integral forged steel.


Basic Design:API 6D, ASME B16.47

Face to Face:ASME B16.10, API6D

Flange Ends:ASME B16.5, ASME B16.47

BW Ends: ASMEB16.25

Pressure Test:API 6D, API 598

Fire Safety: API607, API 6Fa

Design Feature:

1pc Forged SteelBody, Top Entry Oil and Gas Industry Valves

Trunnion MountedBall

Blow-out ProofStem


Fire SafetyDesign

EmergencySealant Injector


Size Range: 2" to 48"

Pressure Class: Class 150 to Class 2500


Body: A105N,LF2, F304, F316, F51

Ball: A105N+ENP,LF2+ENP, F304, F316, F51

Shaft: A105N+ENP,LF2+ENP, F304, F316, 17-4PH



Lever, Gear,Pneumatic Actuator


Stem Extension,3mm Thickness SS316 Overlay Seat Pocket

Lockable Device

Inorganic ZincPainting, Carboline

Thanks for yourselection of RSF’s API 6D Stem Extension Top Entry Trunnion MountedBall Valve! If you have any inquiries of our oil and gas industry trunnion ballvalve, please don’t hesitate to call us or email us!