Home > Products > Stop valve,Globe Valve > FJ41 Throttle Shut-off Blow-off Valve, Shut-off Blow-off ValveFJ41 Throttle Shut-off Blow-off Valve, Shut-off Blow-off Valve

FJ41 Throttle Shut-off Blow-off Valve, Shut-off Blow-off ValveFJ41 Throttle Shut-off Blow-off Valve, Shut-off Blow-off Valve

Product Code : VF--ZCC-239-CU

Nominal diameter (DN) (mm): 25 - 30 Valve body material; Carbon steel

Applicable medium; Water, steam, oil products, etc.

Applicable temperature (°C); ≤350

Work pressure (MPa) PN16~PN160

It is widely used in pipelines for petroleum, natural gas, coal gas, liquefied petroleum gas, as well as in oil refining, airports, chemical industries, oil and gas storage and transportation, etc. as a closed-loop device.


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Product Product Code Purity Size Contact Us
FJ41 Throttle Shut-off Blow-off Valve, Shut-off Blow-off ValveFJ41 Throttle Shut-off Blow-off Valve, Shut-off Blow-off Valve VF--ZCC-239-CU Customized Customized

FJ41 Throttle Shut-off Blow-off Valve - Features 


1. The throttling, closing and venting valve is a new type of product for throttling, closing and venting. The throttling, closing and venting valve adopts cage-shaped labyrinth throttling, which has multi-stage throttling effect. It has obvious throttling effect, reliable sealing, and convenient operation and maintenance features.

2. The valve adopts double sealing (hard and soft sealing) to ensure reliable sealing. The hard alloy cover can be more resistant to air flow erosion and wear. The double sealing can achieve zero leakage under high-pressure gas medium conditions. The valve has a long service life.

3. The sealing surface of the valve seat adopts conical sealing, which is conducive to cleaning the dirt attached to the sealing surface by the valve itself.

4. The valve disc of the valve is equipped with a balance hole, and the piston type sealing ensures stable operation under the full pressure difference of opening and closing. It is lightweight, flexible to open and close, and has a small opening and closing torque.

5. The throttling, closing and venting valve and the double-acting throttling valve have the functions of throttling and closing (with zero leakage sealing). The throttling section and sealing surface are separated to reduce the erosion of the air flow on the seal.

6. The double-acting throttling and venting valve also has multi-stage throttling function. The throttling pressure difference is large, and it can be used for throttling and closing under high pressure.

7. The packing adopts a V-shaped packing structure with self-sealing capability, which does not require adjustment. Opening and closing are extremely light. An auxiliary sealing grease injection structure is set at the packing chamber to ensure reliable valve packing sealing performance.

8. The throttling, closing and venting valve can be repaired online. The pipeline can replace various wear parts such as packing under pressure conditions.

9. The throttling, closing and venting valve is equipped with a large排污 hole at the bottom of the valve. It is necessary to open it when necessary to clean the dirt in the valve.


The FJ41 throttle stop-off and vent valve is widely used in pipelines for petroleum, natural gas, gas, liquefied petroleum gas, as well as in refineries, airports, chemical industries, oil and gas storage and transportation, etc., for use as a closed circuit device.

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




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