JIS flange globe valve

Short Description:

 1. The structure is simple and the manufacture is convenient.
2. The working stroke is small and the opening and closing time is short.
3. The sealing performance is good, the friction force between the sealing surfaces is small, and the service life is long.


Product Detail

FAQ

Product Tags

Nominal Diameter :DN15-DN300
Pressure Rating:PN10/ PN16/ PN25/ PN40
Type Of Connection:Flange
Valve Operation:Handwheel、Gear、Pneumatic、Electric
Body: Cast Iron/ Ductile Iron/ Cast Steel/ Stainless Steel
Disc : Cast Iron/ Ductile Iron/ Cast Steel/ Stainless Steel
Stem: stainless Steel
Seat: Brass/ Stainless Steel
Apply Medium:Water, Steam, Oil, Acid-Base
Maximum service Temperature:-29℃≤T≤200℃ (CF8、CF8M、CF3M、904L)
-29℃≤T≤150℃ (Cast Iron) -29℃≤T≤425℃ (WCB)
Design and Manufacture: KS B 2361
Face to Face: KS B 2306
Flange End:JIS B2031/ KS B 1511
Inspection and Test Standard:API598

Check valve, also known as shut-off valve, belongs to the forced sealing type valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve disc, the resistance to be overcome by the operating force is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force for closing the valve is greater than that for opening the valve, so the diameter of the valve stem should be larger, otherwise the valve stem will be bent. According to the connection mode, it can be divided into three types: flange connection, screw thread connection and welding connection. After the appearance of self sealing valve, the medium flow direction of the stop valve changes from the top of the valve disc into the valve chamber. Under the action of medium pressure, the force to close the valve is small, but the force to open the valve is large, and the diameter of the valve stem can be reduced accordingly. At the same time, under the action of medium, this type of valve is also more tight.


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