At the back of the Statim, sitting just inside the cover, is the exhaust valve, or solenoid valve. A Statim 2000 valve is shown in the guide below, but the procedure is the same for a Statim 5000. This valve can often become stuck open, preventing the Statim from pressurizing. This is caused by either:
- Debris lying across the plunger contact, preventing it from sealing fully against the base of the valve, or
- Debris wedged between the plunger and the shaft, causing it to jam in the “open” position.
Disassembling the Statim Solenoid Valve
Using an adjustable wrench, remove the hex nut at the top of the valve.
Lift the metal bracket and black magnetic coil off of the valve shaft and set them to the side.
For the next step, water pump pliers (Channel-Lock pliers) are ideal. Use the longest-handled pliers you have because you will need good leverage.
Using the pliers, grip the valve shaft ABOVE THE WELD but BELOW THE THREADS.
Loosen the shaft on its threaded base. (Turn the shaft counter-clockwise to loosen). You may need to apply quite a bit of pressure.
If you are unable to loosen the shaft, you can remove the entire valve assembly and put it in a vise. A pipe wrench can also be useful in loosening stubborn valves.
Loosen the shaft, but DO NOT fully remove it until the next step.
Once the shaft is loose, finish unthreading it with your fingers. Be careful to avoid sharp metal shavings!
When lifting the shaft off the valve base, the plunger and spring will fall out the bottom of the shaft. Use your finger to hold them in place as shown. If they fall out, it’s easy to lose the spring, which is very small.
Check the base of the valve for small pieces of debris.
Lastly, remove the plunger from the shaft, being careful not to lose the spring, and check the sides of the plunger for any debris that may be stuck to it. Also check inside the shaft for debris.
Put the spring and plunger back in the shaft and turn the plunger with your finger. The fit should be very smooth. If the plunger sticks or feels gritty, clean the base, shaft, and plunger with a scrubbing pad and rinse thoroughly.
Reassemble the valve. Tip: when reinserting the spring and plunger into the shaft, do not tip the plunger downward into the shaft, as this may cause the spring to fall out of place. Instead, hold the plunger and spring upright, then lower the shaft over the plunger.