In recent years, coal chemical industry requires oxygen temperature of 350~450 °C, and high temperature oxygen is more demanding on valves. Clothes Dryer Parts,Copper Pipe Fitting,Clothes Dryer Condenser System,Dryer Condenser Management Device Suzhou Green New Material Technology Co., Ltd. , https://www.szgreenvip.com
When the nominal size is less than DN50, the vertical or horizontal lift check valve 9 is used at the working temperature not exceeding 200 °C: When the nominal size is DN50~100, the PTFE soft seal swing check valve is used. When the oxygen working temperature exceeds 200 °C, the soft seal swing check valve of the copper seal is used. The soft-sealed swing-type check valve with Teflon or copper gasket is safe when the valve is quickly closed and does not directly strike or strike the metal seat by the metal valve.
In recent years, coal chemical industry requires oxygen temperature of 350~450 °C, and high temperature oxygen is more demanding on valves. 
The check valve can also be used with a three-eccentric swash plate type check valve. The valve flap is a butterfly swash plate mounted on the valve shaft. The valve seat is a special floating elastic metal hard seal structure to ensure the valve seat and the valve flap. Automatic adjustment of the alignment. The sealing surface of the valve seat is a part of the oblique cone, and the sealing line formed by the valve seat and the valve flap is an approximately elliptical curve, and a second eccentric angle is formed between the plane of the curve and the center of the valve flow passage. The axis of the flap rotation axis forms an eccentric amount with respect to the axis of the cone and is also at an eccentric position with respect to the plane of the seal line, forming an eccentric amount. When the pressure of the medium reaches its working pressure, the valve flap opens, and when the pressure of the medium decreases, the valve flap automatically closes. Because the valve disc and the metal valve seat have the characteristics of the three eccentric butterfly valve, the impact can be quickly and non-collided and sealed without the external force when the valve is closed. The valve also features high flow and small flow resistance.
Oxygen special valve classification: oxygen special cut-off valve, bevel gear oxygen special cut-off valve, oxygen special pressure reducing valve, oxygen flame arrester, oxygen filter, oxygen pneumatic shut-off valve, oxygen regulating valve, oxygen special check valve, oxygen special Ball valve, special butterfly valve for oxygen. For more details on oxygen special valves, please consult Wenzhou Yi Nai Pump & Valve Co., Ltd.
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