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7 Yrs
High- Tech Development Zone
Shenyang, Liaoning-110 032, China+(86)-24-86621371
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Quick Opening Closure

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quick opening Closure is applicable to the openings of pressure pipelines and pressure vessels. The end closure is a kind of mechanical device could be opened and closed quickly. It mainly consists of door, locking band, hub, safety interlock system, and opening and closing system.

This product absorbed advanced technology and adopted advanced design concepts, contracting and opening system. Compact, flexible, on the basis of ensuring the strength of the product reduced dimensions. When door locking achieved, there is no relative rotation between the seal face and seal. So easy to prevent damage of the seal and ensure sealing. The entire opening or closing process can be completed by one person without special tools within two minutes. Thus greatly reducing the labor intensity. This product is especially suitable for pipeline pig launcher and receiver, filter and the like.

Product characteristics
Technical parameters:

Designed pressure ≤ Class 2500

Operation temperature: -40200 degree
Applicable medium: oil, gas, water, chemical raw material
Nominal diameter: DN80DN2500
Structure features: Fast and easy operation, safe and reliable, one person opening/closing in one to two minutes without special tools assistance. The product has safety self-locking function that prevents false opening of the door.
Material feature: door, locking band, hub are all made of steel forged piece.

Sealing materials: Oil-proofing fluoride rubber.


1.Locking Band 2.Hub 3.Door 4.Hinge blocks 5.Hinge pins and bearings 6.Hinge pin retaining screw 7. Hinge arm 8. Adjuster screw 9. Door brackets 10.Locking Mechanism 12.Guide positioning block 11. Locking plate 13. Pressure warning Screw 14. Pressure warning Screw Seal 15. Door seal 16. Universal Handle 17.Lifting Lugs


1. Blow downs

2. Scrapper and Pig Traps, Catcher, launcher, receiver

3. Access opening on Scrubbers, Filters, Strainers, etc.

4. Chemical Reactors

5. Pressure Vessels

6. Shell and Tube Heat Exchangers

7. Autoclave Doors

8. Manways in Pressure Vessels

9. Meter Provers

10. Terminal Manifolds

11. Storage Tanks

It could be divided into vertical and horizontal types. The vertical type is mainly used to launch and receive pipeline pigs, and horizontal is for filter and the like.


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