Plumbing Connection Fittings for PF750 Filters The PondMax Replacement Fittings for the PondMax PF750 Pressure Filter include the 3/4", 1", and 1 1/4" connection points used to plumb the filter into your pond's inlet and outlet lines. These are the most common wear points on a pressure filter, since they are handled every time the system is connected or disconnected for seasonal maintenance. Matched Sizing for a Tight Seal The PF750 uses multiple fitting sizes depending on the plumbing configuration of your system, and using the correct size is essential for a leak-free connection. Repeated seasonal disconnection, combined with UV exposure and freeze-thaw cycling, gradually cracks the threads or hose barbs on the original fittings. A worn fitting typically shows up as a slow weep or spray at the connection point even when the hose clamp or union nut is fully tightened. Compatible With PondMax PF750 Pressure Filter Sizes Available 3/4", 1", 1 1/4" (19 mm, 25 mm, 32 mm) Material PVC fitting body How to Use Drain the filter and disconnect the plumbing before removing the worn fitting from the filter port. Apply PTFE tape to the new fitting's threads and hand-tighten before snugging with a wrench, avoiding overtightening on the plastic filter body. Reconnect hose or PVC plumbing and check for leaks once the system is repressurized. Ideal for PF750 owners replacing a cracked or leaking fitting found during a seasonal plumbing inspection.
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