Shut-off valve with reverse seal, shut-off valve

Product overview with reverse seal globe valve:

The backsealed globe valve is mainly installed on the water and steam pipelines as a opening and closing device (such as steam engine, boiler drainage water, boiler regular sewage discharge door, temperature reduction water door, etc.). In the drainage water system of thermal power plants, most of the domestic ordinary valves or imported valves are used at present. The valve is not strictly closed, resulting in the leakage problem of the drainage water system valve. In view of this, our company has developed a valve that can solve the problem of internal leakage - non-scouring globe valve.

With reverse seal globe valve product advantages:

1, high pressure medium into the valve, first in the valve cage to fully step down the release of pressure energy and noise, so that the fluid will not erode the sealing surface of the valve core and the valve seat, so as to play the role of anti-scour. By moving the disc up and down, the flow rate of the valve can be adjusted arbitrarily, with adjustability.

2, high temperature resistance, high pressure and erosion resistance of the main performance parts are made of good stainless steel, the sealing parts of the valve core and valve seat are made of the special processing technology of surfacing of Taili hard alloy, the sealing surface welding layer is not less than 2.5mm.

3, the contact between the disc and the valve cage without friction, the valve cage is positioned straight, so that the valve is closed tightly without leakage, open flexible without stagnation and other advantages.

4. The valve stem and valve disc adopt the flexible structure, which can adjust the abrasion and leakage caused by the different center of the valve stem in the manufacturing process.

5, the stem surface is treated by corrosion resistance nitriding, wear resistance, abrasion resistance, good performance.

6, packing for flexible graphite, nickel wire, soft wear-resistant, will not scratch the stem.

7. The anti-scour valve used in the current market has no inverted sealing structure. Once the packing gland is leaked, it can only be stopped for maintenance or blocked. The anti-scour valve designed by our company, the working pressure is more than 10MPa, all adopt the inverted seal structure, if the above problems occur, under the premise of no need to stop, the valve can be fully opened, replaced and added packing.

8. The flow direction of the valve medium is high in and low out.

9. The valve can be installed at any position on the pipeline, and the valve of carbon steel or alloy steel is selected according to the temperature of the medium.

10, this valve can only be fully closed or fully open, can not be used as a regulating valve!

Applications of retrenchless globe valves include:

Water distribution system of thermal power plant: the inverted sealing stop valve is mainly installed on the water and steam pipelines as a opening and closing device, such as steam engine, boiler water distribution, boiler regular sewage discharge door, temperature reduction water main door, etc., to solve the common valve in high temperature, high pressure fluid erosion under fast wear, lax closure problems.

Chemical industry: such as liquid ammonia cut-off valve, ammonia cut-off valve, ammonia cut-off valve, suitable for chemical pipeline ammonia, gas pipeline transmission, with stable sealing performance, safe and reliable use, corrosion resistance and other characteristics, to solve the common valve poor corrosion resistance, shell easy to perforation, poor sealing performance, easy to leak the problem.

High temperature, high pressure and scour environment: such as y type with reverse seal globe valve, pneumatic operation, with butt welding connection mode, suitable for use in the application of the need for highly reliable seal, can resist the medium particles or fluid on the seat and disc scour, extend the service life of the valve, and have reverse seal function to ensure zero leakage of the valve stem

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