Ningbo Sanmin Import And Export Co.,Ltd.
Ningbo Sanmin Import And Export Co.,Ltd.
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QG-Z-20A Series Pneumatic Pulse Valve Right Angle Type 220VAC / 24VDC / 110VAC GOYEN Type
Technical Parameter
| Right angle | Embedded | Inline | Plug | |
| Design-pressure | 0.3~0.8MPa | 0.2~0.8MPa | 0.3~0.8MPa | 0.2~1.0MPa |
| Working-pressure | 0.3~0.6MPa | 0.2~0.6MPa | 0.3~0.6MPa | 0.2~0.6MPa |
| Ambient Temperature | -25~60℃ Customized for lower or higher temperature | |||
| Relative Humidity | ≤85% | |||
| Working Medium | Clean Air | |||
| Voltage | AC220V/DC24V/AC110V/AC24V Customized | |||
| Protection Class | IP65 | |||
| Diaphragm Life | Over One Million Cycles | |||
| Cv/Kv | Call us for detail | |||
Body : ADC12 die cast
Armature : 430 FR stainless steel
Diaphragm : Nitrile or Viton
Spring : 321 stainless steel
Fasteners : 302 stainless steel
Good quality membranes shall be selected and used for all the valves , with each part checked in each manufacturing procedure , and put into the assembly ling conforming to all the procedures . Every finished valve shall be taken the electriferous blowing test .
During installation and commissioning
Failure phenomena
1 . The valves cannot all be opened, but the leading part does act.
2 . Some valves do not work, but the others are normal.
3 . The valves cannot all be closed. There is leakage. There is no way to establish a gas dome.
4 . Some valves cannot be closed. There is leakage.
5 . A valve closing is slowly.
Possible Reason
1 . Check the gas dome pressure to see if it is too low.
2 . Check the valve coil connection and coil
3 ( 1 ) . Y-valve. Some valves for the same gas dome are leaking, thus causing leakage for all the valves.
3 ( 2 ) . Z-valve. The valve inlet and blowing muzzle are installed backwards.
4 . There is some dirt or debris on the membrane, ii is blocking the moving iron core.
5 . The membrane orifice is blocked.
Troubleshooting
1 . Check the leakage
2 . Replace the accessories
3 ( 1 ) . Check the leakage
3 ( 2 ) . Re-install
4 . Clean the membrane and check that the membrane is complete. Check the moving iron core and air lock.
5 . Dredge the membrane orifice
During use period
Failure phenomena
1 . Some valves are leaking. The membrane cannot close tightly and the valve is always open a
little.
2 . Coil is hot and burned out.
3 . Voltage exists but the valve does not operate.
4 . Ambient temperature is below -20℃. The valve is leaking and cannot open.
Possible Reason
1 . There is some dirt or debris on the membrane, the leading part is damaged. Moving iron core is blocked.
2 . It has been turned on for too long.
3 . Membrane is damaged and the orifice is blocked.
4 . Ambient temperature is too low and here is frost in the valve.
Troubleshooting
1 . Clean the membrane and check that the membrane piece is complete. Check the moving iron core and the air lock. Replace the accessories if necessary.
2 . Check the working condition of the control system.
3 . Replace the accessories in time.
4 . Pay attention to insulation and maintaining proper temperatures.
