QG-Z-20A Series Pneumatic Pulse Valve Right Angle Type 220VAC / 24VDC / 110VAC GOYEN Type

QG-Z-20A Series Pneumatic Pulse Valve Right Angle Type 220VAC / 24VDC / 110VAC GOYEN Type

Technical Parameter

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.

NINGBO SANMIN IMPORT & EXPORT CO.,LTD. was established in 2014.Our company is mainly engaged in instrumentation, pneumatic and hydraulic industry accessories and services, has more than 10 series of core products.Focusing on the production of automatic machinery to provide a variety of options, products have a wide range of applications.

Sanmin is an industrial and trade enterprise, has a strict quality control system from material selection, inspection workshop, product testing, production, inspection, packaging design to shipment.At present, the company's trade scale is expanding day by day, the customers spreads over more than 20 countries.

We are strictly abides by Chinese laws and regulations, and has won the trust of customers at home and abroad with good reputation. Welcome to telephone and send E-mail to communication, sincerely cooperate, and seek common development.

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NINGBO SANMIN IMPORT AND EXPORT CO.,LTD.

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