J41H small diameter vacuum stop valve,small diameter vacuum stop valve, vacuum stop valve,stop valve

J41H small diameter vacuum stop valve is suitable for cutting off or connecting medium on the pipeline of the return water condensing system of thermal power station with nominal pressure PN4.0 ~ 10.0Mpa and working temperature ≤200℃. Applicable medium: water, steam, etc. The sealing surface has small friction, light opening and closing, and has automatic compensation function for the wear of the sealing surface. Simple structure, compact, easy maintenance, long service life. The valve cover packing chamber is equipped with a vacuum sealing structure, which has the effect of self-expansion and compression, and the sealing is sealed by high-strength expansion material, so that the system is completely isolated from the atmosphere and has a good system air tightness. This series of valve connection form is divided into flange, welding two, the driving mode is manual, electric two. The valve is suitable for operating temperature ≤425℃ and ≤550℃, the working medium is water, steam or air pipeline, as a opening and closing device; Especially suitable for steam condensing and vacuum negative pressure system in thermal power plant, it plays the role of vacuum isolation and sealing.

Product structure features:

1, the product is designed and manufactured according to JB/T3595 standard to meet the requirements of power station equipment.

2. The vacuum sealing structure packing room is designed to isolate the vacuum reliably.

3, the valve stem after tempering and surface nitriding treatment, has good corrosion resistance, abrasion resistance and wear resistance.

4. The flange gasket is made of composite material with large expansion coefficient and good airtight performance to ensure reliable isolation between the system and the atmosphere.

5, the reverse seal is made of stainless steel thread connection sealing seat or body surfacing welding austenitic stainless steel, the reverse seal is reliable. Packing replacement and maintenance can be carried out without shutdown, convenient and fast without affecting the system operation

The valve is suitable for operating temperature ≤425℃ and ≤550℃, the working medium is water, steam or air pipeline, as a opening and closing device; Especially suitable for steam condensing and vacuum negative pressure system in thermal power plant, it plays the role of vacuum isolation and sealing.

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