Water is leaking from the union connections on the suction or discharge side of the pump.

Safety first: Turn off power and relieve system pressure before loosening unions.

• Tighten unions: Hand‑tighten the AquaJet pump unions, then use a strap wrench if needed. Do not overtighten to the point of cracking.
• Inspect gaskets: If leaking persists, fully disconnect the union and inspect the O‑ring or gasket. Replace if flattened, cracked, or missing.
• Check alignment: Ensure the connected plumbing lines up naturally with the pump ports. Adjust supports or fittings to remove side‑load on the union.
• Reassemble and test: Reconnect, tighten, and run the pump while checking for drips.