The high‑pressure ball valve with flanged ends divides the valve body into three parts at the two valve seat positions along the section perpendicular to the axis of the valve channel. The Q41N high‑pressure ball valve with flanged ends is symmetric left and right along the central axis of the valve stem. It is mainly used on pipelines to cut off, distribute and change the flow direction of the medium.

The large pivot structure of the high‑pressure ball valve with flanged ends ensures the accurate center position of the ball under high pressure and the good operating performance of the valve; the standard valve seat of the high‑pressure ball valve with flanged ends adopts a spring structure, which pushes the valve seat to the ball, ensuring good bidirectional sealing performance at the inlet and outlet; using the built‑in drain valve, the middle cavity of the valve body can be drained outward; the pivot adopts a blow‑out prevention structure to effectively prevent leakage; the bearing with low friction coefficient reduces the torque to a minimum, facilitating the opening and closing of the valve; the effective contact between the valve stem and the valve body makes the anti‑static grounding device have superior performance, etc.

It has the advantages of excellent performance, high reliability, wide application and reasonable price. It is suitable for chemical, petroleum, natural gas, metallurgy and other industries, as well as long‑distance natural gas pipelines containing hydrogen sulfide medium, many impurities and severe corrosion.

Product Features

1. All components of this product are forgings.

2. Bottom‑mounted stem with back‑seal structure.

3. Inlaid valve seat with O‑ring installed behind the seat to prevent medium leakage.

4. Nylon 1010 is adopted for sealing surface. Its friction coefficient is usually 1/3 of babbitt alloy, so it is a self‑lubricating material. Its bending strength, impact strength and ductility are comparable to metals.

5. STL alloy is applied for sealing surface to realize wear‑resistance and high‑temperature resistance.

6. Anti‑static and fire‑safe design.

Design Standards (American Standard)

Design & Manufacturing: ASME B16.34, API6D

Face‑to‑Face Dimension: ASME B16.10

End Connection: ASME B16.5, ASME B16.25

Inspection & Test: API598

Fire‑Safe Design: API607

Design Standards (Chinese Standard)

Design & Manufacturing: GB12237—1989 General Purpose Steel Ball Valves with Flanged and Butt‑Welded Ends

Face‑to‑Face Dimension: GB12221

End Connection: JB/T79, GB9113, HG20592

Inspection & Test: JB/T 9092, GB/T13927‑1992 General Purpose Valves‑Pressure Test

Main Parts Material

Main Performance Specification

Main Technical Parameters