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OEM Jandy Pump Diffuser R0445400 is engineered to optimize water flow in SHPF and SHPM pump models, ensuring consistent and efficient circulation throughout your pool system. This essential diffuser includes a matching O-ring and hardware kit for a complete and reliable installation. Designed for durability, it helps maintain the internal structure of the pump while promoting steady water movement. Quick to install and built for lasting performance, this kit is the ideal replacement to restore or maintain your pump's functionality.
Highlights
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Maintains Peak Circulation: Specifically crafted to support high-flow output in SHPF and SHPM models, keeping your water moving efficiently
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Includes O-Ring and Hardware: Complete kit ensures proper fit and sealing to prevent leaks and promote consistent system pressure
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Promotes Efficient Flow Dynamics: Helps direct water within the pump for optimal internal performance and reduced strain
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Built for Long-Term Use: Made with tough materials to withstand routine pressure and wear in pool environments
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Easy to Install and Replace: Simplifies pump servicing with a direct-fit design and all needed hardware for a smooth install
Includes
- (1) Pump Diffuser
- (2) Bolt
- (2) Washer
- (1) Backplate O-Ring
- (2) Diffuser O-Rings
Replacement Instructions
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Refer to Figure 2 and the associated parts list to identify the parts included in each replacement kit.
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Using a No. 1 Phillips screwdriver, remove the two (2) screws attaching the diffuser to the backplate. Carefully remove the diffuser from the backplate. See Figure 3.
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Remove any debris from the inlet and outlet of the impeller.
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Remove the motor shaft cover on the back of the motor by twisting the hex-head screw with an adjustable wrench. The motor shaft will be exposed.
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Hold the exposed motor shaft with a ½" wrench while removing the impeller center screw. Use a No. 2 Phillips screwdriver. Turn the left-handthreaded screw clockwise to loosen it.
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While holding the motor shaft with a ½" wrench, thread the new impeller onto the motor shaft. Hand-tighten the impeller until it is secure.
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Using a No. 2 Phillips screwdriver, tighten the impeller’s center screw into the center of the impeller. Turn the left-hand-threaded screw counter-clockwise to tighten it. Do not overtighten.
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Replace the motor shaft cover by inserting the cover tabs into the slots and rotating the cover 90º clockwise.
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Install the new diffuser over the impeller. Make sure you insert the alignment pins into the correct holes. The molded-in arrow must align with the molded-in arrow on the backplate. See Figure 3.
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Install the two (2) Phillips-head screws. Tighten the screws to draw the diffuser against the backplate.
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To avoid a leak, make sure the diffuser o-rings, o-ring grooves, and o-ring seal area are clean and free of debris. If grease is used to retain the o-rings, it must be silicone based. Do not use petroleum-based grease, because it will destroy the o-rings.
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If you are not installing another replacement kit, skip to Section 6, Pump Assembly.
Compatibility
This diffuser kit is compatible with the following Jandy pumps
- Jandy PlusHP PHPM & PHPF Series Pump (2006-Current)
- Jandy MaxHP MHPM Series Pump (2006-2010)
- Jandy Stealth SHPF & SHPM Series Pump (2008 - Current)
- Jandy Water Features Pump, WTFR Models
- Jandy ePump Variable Speed Pump (2008-Present)
- Jandy ePump + SVRS Variable-Speed Pump (2013-Present)
- Jandy ePump 2.2HP Pumps
- Jandy ePump 2.7HP Pumps
- Jandy PlusHP 2.7 HP VS Series Pump (2014-Present)
Note: This diffuser may be compatible with your pump please check owners manual to ensure compatibility