///Air leaks from the valve actuator
On/off valve
Air leaks from the valve actuator
The air actuator opens and closes the on/off valve.
Safety first: Switch off the pump, release all pressure (open the on/off valve or bleed-down valve) and lock out before you open any high-pressure part. Never put a hand or tool near a running jet.
1Check the causes, most likely first
0 of 2 checked
01Worn actuator piston seals
Most likely
Air passes the piston.
How to check: Listen for air at the actuator while open.
| Photo | Art. no. | Description | Excl. VAT | |
|---|---|---|---|---|
 | 10009 | Actuator cylinder, Pneumatic valve N/C, 10176543
CylinderKMT |
€ 108.00 | |
 | 10016 | O-ring Valve Actuator, 10177806
O-ringKMT |
€ 1.32 | |
 | 10017 | Snap Ring, Valve Actuator, 10177772
Bushing & ringKMT |
€ 13.20 | |
 | 10018 | Seal/Wiper, Pneumatic Actuator, 10177780
SealKMT |
€ 7.32 | |
 | 10019 | O-ring, Valve stem, 49895584
O-ringKMT |
€ 0.96 |
02Leaking air fitting or tube
Possible
Air escapes before the actuator.
How to check: Spray soapy water on fittings.
Related problems
General advice based on manufacturer manuals and service practice. Always follow the manual of your machine. Not sure? .