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    Core tip: opening and closing pieces by medium flow and the forces to open or close, backflow valve to prevent the media called the check valve. Check valves are automatic valves, mainly for one-way flow of media channels. Opening and closing pieces by medium flow and the forces to open or close, backflow valve to prevent the media called the check valve. Check valves are automatic valves, mainly for one-way flow of media channels, only allowing media to flow in one direction, to prevent accidents.

    Check valve according to its structure, can be divided into the lift check valve, swing check valve and butterfly valve three. Lift check valve can be divided into two types of vertical and horizontal. Swing check valve is divided into a single type, double valve and valve type three. Butterfly valve for the straight through, the above non-return valve can be divided into connection, flange and welding of three threads in the connection form.

    Check valve should be installed in the top note of the following things:

    1.in the pipeline not to bear the weight of a large check valve, non-return valve should be independent of support, so that no influence of pressure piping system from the.

    2.installation media attention to the direction of flow should be consistent with the body of the votes in the direction of the arrow.

    3.vertical lift check valve should be installed in a vertical pipe.

    4.the level of valve lift check valve should be installed in horizontal pipelines.

    Check valve, the main products are: gas flow limiting valve H145X. Swing check valve H44H. Lift check valve H41H. Vertical lift check valve H42H/N. Angle type valve H63Y/H83Y. High pressure check valve H42/H62H. High temperature valve H42/62Y. Forged steel check valve J11Y. Forged steel check valve J41Y. Forged steel Y type check valve H65Y. Forged steel welding check valve J61Y. Wafer type check valve D71/72/74/76/78/79. Clip on wafer type check valve H74X/H. Silencing check valve HC41X. Silent check valve HC42T/X/H (DRVZ). Rubber check valve HH44X (SFCV). Butterfly type check valve. Micro resistance slow closing check valve HH44X. Micro resistance slow closing silencing check valve HH46H/W, micro slow close butterfly check valves HH48H/X, HH49H/X. Non wear spherical check valve HQ41. Slag discharge check valve PH44Y. Large caliber ball valve HQ44/HQ45X. Floating ball type check valve H40F. Liquefied petroleum gas check valve H41/42N. Flange valve H44H. Check valve with internal thread H11W. Insulation check valve, BH41H BH44H. Pressure self sealing valve H42Y/H62Y. Stop check multi-function valve H48H. Swing lining rubber check valve H44J. Lift rubber lined valve H41J, H40J. Fluorine valve H41F, swing fluorine lining valve H44F. Vertical fluorine lining valve H42F/H40F. Plastic check valve H41F/H44F/H61F-6S. Cryogenic valve DH41H, American Standard check valve H40H-150LB. Standard check valve H44W-10K. American Standard check valve H44W. Energy saving shuttle valve JLH41X. Tubular type check valve GLH44X. Lug type check valve. Cast iron check valve. Cast steel check valve. Chrome molybdenum steel check valve. Stainless steel check valve.     At the end of valve H42H. Water valve etc..

    Body material: cast iron, cast steel, stainless steel, forged steel, forged steel, chrome molybdenum steel, low temperature steel.

    Working pressure: National Standard: 1.6-42MPA, American Standard: 150LB-2500LB, Japan: 10K-64K.

    Operating temperature: -196 ° C-, 550 ° C.

    DN15-DN800

    The caliber of the valve; DN15-DN800.

    Connection: flange, welding wire clip, or.

    Suitable medium: water, oil, gas, steam, etc..

    Application: machinery and equipment, chemical equipment, general parts, industrial equipment, water supply and drainage equipment, paper making equipment, pharmaceutical equipment, general equipment, petrochemical equipment, power equipment, powder metallurgy equipment, mining equipment, municipal, electron industry etc..