Replace the O-Ring on the Purge Valve

Disassemble the purge valve.

Remove the old o-ring from the purge valve.

Clean the purge valve parts.

Place the new o-ring on the Screw Purge Valve.

Place the screw with o-ring on the Purge Valve Body.

Place the mounting ring on the screw and push down the o-ring.

Push the screw up and guide the o-ring into the gap.

Place a new frit into the purge valve with the orientation of the frit as shown below (slit in frit points to the front). Reinstall the seal cap including the gold seal.

Install the purge valve to the pump. Make sure not to turn the purge valve body when the screw is fixed to the pump. The o-ring will take damage.

运行系统压力测试（请参见系统压力测试）。