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Installation & Maintenance

Solenoid Valve Installation and Maintenance Instructions.

Before mounting the valve it is essential to check that the solenoid valve model, the voltage (Volt) and the frequency (Hz) correspond to the characteristics required.


Electrical Connections

Working Temperature


These general instructions give an approximate idea of the correct use of the solenoid valves but cannot in any way be considered as a substitute for the catalogue giving all the characteristics of every solenoid valve. Please consult this volume or our technical office for every new installation.

Exploded View Solenoid Valve

Valve Material


MaterialMaterial ReferenceFeatures
Brass2.0402Widely used, not suitable for corrosive medium
S.S.304AISI 304Mainly used for slightly corrosive medium.
S.S.3116AISI 316 Mainly used for very corrosive medium.
Aluminium alloyA1Si8 Cu 3Mainly used for neutral medium.


NBR-10°C —+80°CSuitable for most neutral medium, such as air, water and so on.
FPM-20°C —+180°CSuitable for acid, alkali and oil medium, not suitable for hot water or steam.
PTFE-180°C —+200°CSuitable for corrosive medium

Instructions for Installation and Application of Pneumatic Valves

  1. Make sure that the model and parameter of the pneumatic valve are in accordance with the site installation and technical requirement.
  2. Make sure the valve cylinder and position indicator are undamaged.
  3. Clean the inside of the pipe of the pneumatic valve of any debris please also install the filter valve in the front of the valve pipe.
  4. Install as per direction of the arrow on the valve body; Connect the valve mouth to the pipe and make sure the connection is well sealed.
  5. If the pneumatic valves are equipped with electric valve, please insure that the connection is well sealed.
  6. Avoid heating the seals of the pneumatic valve if welding.

Notices of installation of pneumatic valve and electric valve

  1. Keep the fluid and gas clean to prevent blocking electric valve or piston.
  2. Don’t touch the coil while solenoid valve works and gets hot.
  3. Don’t take off the coil while the solenoid coil is energised as it will burn out.
  4. Don’t hit the coil, solenoid pipe and the connecting part to cause any damage.
  5. Don’t cover the coil of the solenoid valve to prevent over-heating and burning out.
  6. The actual supply voltage of the solenoid valve should not exceed the tolerance.
  7. The working pressure, working temperature, viscosity of the medium should not exceed the specified scope.


  1. Before disassembling the pneumatic valve, drain the fluid inside the cylinder and the media from inside the valve. Thoroughly clean the media if it is inflammable, potentially explosive or high temperature or high pressure or it is toxic or corrosive.
  2. Step of Disassemble pneumatic valve:
  3. Disassembly of cylinder: Take off the locking ring, lift the cylinder and take it out. The piston, spring, position indicator and stem are visible.
  4. Disassembly of valve body: Loosen with spanner at the end of the valve cover.
  5. Disassembly of seals: Disassemble the valve body, and the seals are at the end of the stem; remove the screw that fastens the seals.
  6. Then assemble the valve step by step refer to the step of disassembling.
  7. The parts such as seals, locking ring and spring should be assembled correctly. Tighten the connection properly, do not damage the seals or valve seat.
  8. The maintained valve must pass the pressure and leakage test, and then it can be put into use.

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