Repairing a Firing Valve (for CPS)

If your weapon is constantly leaking from the nozzle you may have a misaligned valve seal. The seal is made up of 1 or 2 rubber washers placed on the end of a firing valve. The rubber washers shut off water flow from the firing chamber to the nozzle. When you pull the trigger the firing valve is pulled away from the back of the nozzle, breaking the seal, and giving the pressurized water in your firing chamber an escape route out the nozzle.

When the rubber washers are misaligned or broken the valve does not seal all the way, which is why water constantly leaks from your weapon’s nozzle. Not all nozzle assemblies can be disassembled. Smaller weapons usually have a single piece of plastic encasing the firing valve. Larger guns usually have 2 pieces of plastic, screwed together, encasing the firing valve.

Step 1: Disassemble the Blaster

cps2500internals

Step 2: Disassemble the Nozzle Assembly

CPS 2500 Nozzle Valve 2

CPS 2500 Firing Valve disassembled

Step 3: Place the Rubber Washers Snuggly on the Firing Valve

The larger washer goes on first, followed by the smaller washer. Apply as little pressure as possible to the firing valve. You do not want to push it backwards, as it will prevent the valve from sealing, and your gun will continue to leak, possibly even worse than before. I glued the washers in place to prevent them from coming loose again. If you choose to do this, make sure the glue you are using won’t eat through the rubber.

Step 4: Reseal the Firing Assembly

Step 5: Reassemble the Blaster

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