Description
Pentair union fitting 50 mm for Supermax pump R170450
The Pentair union fitting 50 mm for Supermax pump R170450 is the original connection fitting designed to join a Pentair Supermax pump to 50 mm PVC pipe. It provides a secure, service friendly union between the pump port and the filtration pipework, ensuring a watertight and professional connection in the technical room.
Main features of the Pentair union fitting R170450
- Original Pentair union fitting for Supermax pool circulation pumps.
- Designed for direct connection to 50 mm PVC pressure pipe.
- Includes union nut and tailpiece with integrated seal seat.
- Provides a removable connection for easy pump maintenance.
Function in the Supermax filtration circuit
The union fitting R170450 is installed on the suction or discharge port of the Supermax pump and glued to the 50 mm PVC pipe on the other side. Once assembled, the union nut compresses the internal gasket against the pump port, creating a watertight connection that can be opened at any time without cutting the pipe.
- Allows quick disconnection of the pump for service or winterising.
- Ensures correct alignment and sealing with the Supermax pump body.
- Reduces stress on pipework compared with rigid glued connections.
Compatibility and typical applications
This union fitting is intended for Pentair Supermax pumps with 50 mm union connections. The thread and sealing face are matched to the original pump ports, so the union nut and tailpiece fit directly without adapters.
- Compatible with Pentair Supermax pumps that specify reference R170450.
- Suitable for both suction and return connections where 50 mm pipe is used.
- Ideal for new installations and for replacing worn or cracked original unions.
When to replace the Pentair R170450 union fitting
Over time, union fittings are exposed to mechanical stress, UV, temperature changes and chemical vapours. This can lead to wear or damage that causes leaks or makes the union difficult to operate.
- Visible cracks or deformation on the union nut or tailpiece.
- Persistent drips at the connection despite a new gasket and correct tightening.
- Threads that are cross threaded, seized or badly worn.
- Upgrades or reconfiguration of the filtration circuit where fresh unions are preferred.
Installation guidelines
Installing the Pentair union fitting 50 mm for Supermax pump R170450 is straightforward and should always be done with the system depressurised and the pump disconnected from the power supply.
- Switch off and isolate the pump electrically and close valves on the suction and return lines.
- Remove any existing union or fitting and clean the pump port sealing surface.
- Slide the union nut onto the 50 mm pipe, then glue the tailpiece using a suitable PVC adhesive.
- Allow the adhesive to cure according to the manufacturer instructions.
- Fit the gasket in the union seat, align the tailpiece with the pump port and tighten the nut by hand until snug.
After assembly, reopen the valves, prime the pump and check carefully for any seepage around the union during the first minutes of operation.
Good practice for durable connections
Correct installation and basic care help the R170450 union fitting deliver a long service life and keep the Supermax pump easy to service.
- Support the filtration pipework so the union is not loaded by the weight of the pipes.
- Avoid overtightening the union nut; hand tightening is usually sufficient.
- Inspect the gasket periodically and replace it at the first signs of flattening or cracking.
- Protect the technical area from direct sunlight and extreme temperature changes where possible.
With a correctly installed Pentair union fitting 50 mm for Supermax pump R170450 and sound gaskets, the pump is securely connected to the filtration system while remaining easy to remove for maintenance or replacement.
