Smoke characteristics of reversed flow of qi check valve:

1. The design and manufacture ANSIB16 acceptance criteria adopted. 34, E101 or JB/T3595, strength and sealing performance completely conform to the standard needs, the vacuum valve and vacuum test, the whole life to meet user requirements.

2。 Disc design for the rocker arm and active connection, but with the valve sealing surface to the rightness, ensure the sealing face.

3。 Aimed at different temperature, the main material is carbon steel or steel, high temperature sealing surface carbide surfacing.

4。 is equipped with damping heavy hammer, can balance the closed kinetic moment, prevent not hammer.

5。 seat sealing surface inclination Angle, reduce shut down time, lighten the impact, protect the security of the equipment itself and the pipe.

6。 In the reversed flow of qi check valve body cavity adopts streamlined design, flow capacity, reduce the resistance of the valve.

7。 Is spring return type actuator cylinder or hydraulic cylinder, with a relatively independent, the valve closed and actuator failure does not affect the closing action.

8。 Close an open sets limit mechanism, avoid open a bit damaged.

9。 Cylinder hydraulic cylinder wall coating wear-resisting corrosion resistant layer, can increase life, reduce the resistance, the valve is flexible and reliable.

10。 Equipped with a switch valve actuator position signal output, Industrial Valves open position on indicator.

reversed flow of qi check valve smoking reversed flow of qi check valve design and manufacturing inspection standards:

design and manufacturing standards: ASME/ANSIB16. 34, E101, JB/T3595:

structure length standard JB/T3595, ASME/ANSIB16. 10, GB/T12221

welding side or flange standard: GB/T12224, ASME/ANSIB16. 25, GB/T9113, JB/T79 ~ JB/T82

test acceptance criteria: JB/T9092, JB/T3595, ASME/ANSIB16. 34, E101

extraction technology parameters reversed flow of qi check valve:

nominal diameter: DN200 - 1000 mm

nominal pressure: PN0. 6 - 10. 0 mpa

work temperature: 200 - 510 ° C

extraction non-return valve body material:

body valve rocker cover: WCB, WC6, WC9

stem: 2 Cr13, CrMoV

smoking reversed flow of qi check valve structure features:

1, the sealing surface surfacing Cr13 stainless steel or cobalt-based hard alloy, have good wear resistance, stable and reliable sealing performance.

2, heavy hammer through extension rod and fork on the pin shaft, used to balance and rocker heavy torque and prevent the occurrence of water hammer. When the medium flows forward, help to open the valve, and keep the valve in the running smoothly and reducing vibration.

3, when the medium is flow, cylinder inferior vena intake, together with a heavy hammer, balance disc is located in the full open position. When the reverse flow of the medium, the cylinder piston inferior vena rapid pressure release, the disc at 0. 5 seconds down quickly.

keywords: smoke reversed flow of qi check valve structure, reversed flow of qi check valve design and manufacturing inspection standards
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