J41N liquefied gas natural gas stop valve,liquefied gas natural gas stop valve. stop valve

J41N Liquefied Gas Natural gas globe Valve Product Introduction:

Using elastic forming polytetrafluoroethylene as filler, the sealing performance of the filler is enhanced with the increase of medium pressure, and has the reverse sealing function, which is suitable for high and middle pressure gas transmission pipeline.

The opening and closing part of the liquefied gas stop valve is a plug shaped valve disc, the sealing surface is flat or conical, and the valve disc moves in a straight line along the center line of the fluid. The liquefied gas globe valve is a forced seal valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak.

Product implementation standards:

1) Design and manufacture: GB/T12235-89

2) Flange connection: JB/T79-94, GB9113-2000

3) Structure length: GB12221-89

4) Nominal diameter: DN15~DN300mm

5) Nominal pressure: PN1.6, 2.5, 4.0MP.

Product principle and structure description:

When the hand wheel turns clockwise, the valve stem moves down, the valve disc drops to make the sealing surface close and cut off the path, and the reverse is opened, and the valve stem is raised to the highest point and the seal works.

The liquefied gas globe valve adds an upper seal, which has a two-layer sealing effect with the packing when the valve is open, and has a certain protective effect on the packing.

Nylon products are used as the sealing surface, the filler is soft forming filler, the upper seal is also soft material, and the sealing performance is good.

J41N Liquefied gas Natural gas globe valve Product Features:

In view of the poor corrosion resistance of ordinary valves and the shortcomings of easy perforation of the shell, according to the specific characteristics of the medium, corrosion resistant steel (carbon steel with corrosion resistant alloy elements) is selected on the body material of the ammonia special valve, which is resistant to ammonia gas and gas corrosion, and the low temperature can reach -40℃ to maximize the use requirements of the working conditions.

The sealing pair structure type of ammonia globe valve adopts ball and flat type, sealing automatic compensation, to achieve double insurance effect, stable sealing performance, no adhesive wear, effectively solve the problem of poor sealing performance and easy leakage of ordinary valves used in chemical pipelines.

The product flange with the tenon sealing structure, even in the case of pipeline pressure fluctuations, to ensure the sealing of the flange is absolutely reliable.

Multistage polytetrafluoroethylene sealing material is used in the upper sealing device to form a combined seal to ensure that the valve has no medium leakage in the stuffing box during the service life, eliminating the possibility of weak sealing of the ordinary valve stuffing box, easy leakage of the medium, and even causing accidents.

Using elastic forming polytetrafluoroethylene as filler, the sealing performance of the filler is enhanced with the increase of medium pressure, and has the reverse sealing function, which is suitable for high and middle pressure gas transmission pipeline.

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition