Description
Pentair Whisperflo And Superflo Drain Plug And Seal Set Of 2 R357161
The Pentair Whisperflo and Superflo drain plug and seal set of 2 R357161 is the original pair of winterising plugs with gaskets for the lower
drain ports on Pentair Whisperflo and Superflo pool pumps. These plugs close the drain openings in the pump housing and ensure a watertight
seal during normal operation, while remaining easy to remove when it is time to drain the pump for winter or maintenance.
Main Features Of The Pentair Drain Plug Set R357161
- Original Pentair drain plugs with integrated seals for Whisperflo and Superflo pumps.
- Supplied as a set of two plugs to equip both drain ports on the pump housing.
- Threaded design for secure tightening and easy removal by hand or with a suitable tool.
- Elastomer sealing ring on each plug for a reliable, leak free closure.
Function And Role In The Pump Housing
The drain plugs are fitted to the lowest points of the pump body so that water can be emptied completely before winter or whenever
maintenance requires a dry housing. During the season, the plugs must seal perfectly to prevent drips and air entry on the suction side.
- Allow quick draining of the pump to protect against frost damage.
- Seal the drain openings during normal operation to keep the housing watertight.
- Help maintain stable priming by preventing air leaks around the base of the pump.
Compatibility And Typical Use
The Pentair Whisperflo and Superflo drain plug and seal set of 2 R357161 is designed for use on compatible Pentair pump housings
that feature twin drain ports. It follows the original thread and seal dimensions, so it can be installed directly in place of
worn or missing plugs.
- Suitable for Pentair Whisperflo pumps that specify reference R357161 for drain plugs.
- Compatible with Pentair Superflo pumps using the same lower drain configuration.
- Ideal when refurbishing a pump housing or replacing plugs damaged by tools, frost or ageing.
Always check the parts diagram for your exact pump model. If the drain plug kit is identified as R357161, this is the correct
replacement set.
When To Replace The Drain Plugs And Seals
Although small, the drain plugs and their seals are critical for proper sealing and frost protection. Over time, plastics and
elastomers can harden, deform or crack under the effects of chemicals, UV and repeated handling.
- Persistent drips from one of the drain ports even after tightening the plug.
- O rings that appear flattened, cracked or are missing completely.
- Plug heads rounded off or damaged by pliers or unsuitable tools.
- Evidence of past frost damage or housing replacement where new plugs are recommended.
Installation And Handling Guidelines
Installing the Pentair drain plug and seal set of 2 R357161 is straightforward and can be carried out during normal maintenance
of the pump or when preparing the filtration system for winter.
- Switch off and isolate the pump before working on the housing.
- If removing old plugs, unscrew them carefully and allow any remaining water to drain fully.
- Clean the drain port threads and sealing surfaces to remove scale or debris.
- Check that the new plugs each have their sealing ring correctly seated in the groove.
- Screw the plugs into the drain ports by hand and tighten until snug; avoid over tightening.
Before the start of the season, verify that both plugs are properly tightened and that no seepage appears around the drain area
when the pump is running.
Good Practice For Winterising And Maintenance
Using the correct original drain plugs and applying simple good practices helps protect the pump housing and extend its service life.
- In freezing climates, remove the drain plugs to empty the housing completely before winter.
- Store the plugs and seals in a safe place during the off season so they are not lost.
- Inspect the seals every season and replace the set at the first signs of ageing.
- Avoid using metal tools directly on the plug heads whenever possible to prevent damage.
With a new Pentair Whisperflo and Superflo drain plug and seal set of 2 R357161 correctly installed, the pump housing remains
properly sealed during normal use and can be drained quickly and safely whenever required.
