Pentair Screw Kit (8 Screws) | PacFab and Compool Valves | 520389

Pentair Screw Kit (8 Screws) for PacFab and Compool Valves | 520389

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SKU:
520389
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About This Item

The Pentair Screw Kit (520389) is the OEM replacement hardware set for PacFab and Compool 1-1/2 in. and 2 in. diverter valve lid assemblies, including 2-way, 3-way, and solar valve configurations.

⚠️ IMPORTANT: KIT LISTING — 8 SCREWS INCLUDED
This listing is a kit of 8 screws. One kit provides the complete screw set for a single valve lid assembly.

The valve lid screws secure the lid to the diverter valve body, maintaining a sealed, pressure-resistant connection between the lid and the valve housing. Over time, screws can corrode, strip, or lose clamping force — particularly in outdoor installations exposed to pool chemicals and UV. Replacing the full set during any valve lid service restores proper lid retention and prevents leaks at the valve lid interface.

Specifications

Pentair Part Number 520389
Quantity Included Kit — 8 Screws

Fits Into

Brand Equipment Line Model / Part Number Notes
Pentair (formerly PacFab / Compool) Diverter Assembly 2 & 3-Way Valve (2–2-1/2 in.) — PacFab and Compool Valves 270056 Screw kit (8 screws) for 1-1/2 in. and 2 in. Diverter Valves
Pentair (formerly PacFab / Compool) Diverter Assembly 2 & 3-Way Valve (1-1/2–2 in.) — PacFab and Compool Valves 270075 Screw kit (8 screws) for 1-1/2 in. and 2 in. Diverter Valves
Pentair (formerly PacFab / Compool) Diverter Assembly 3-Way Solar Valve w/ Drain Down (2–2-1/2 in.) — PacFab and Compool Valves 270094 Screw kit (8 screws) for 1-1/2 in. and 2 in. Diverter Valves

Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.

Pro Tip

When servicing a diverter valve lid — whether replacing the lid itself, the lid O-ring, or the diverter rotor — replace this screw kit at the same time. Screws that have been exposed to pool chemistry and repeated torque cycles are prone to seizing or stripping on reassembly. Replacing all 8 screws as a set ensures uniform clamping force across the lid and eliminates the risk of a single corroded fastener causing a lid leak after reassembly.

CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Pentair Pool Products and Parts

About Pentair Pool Products and Parts

Pentair is often considered the "gold standard" for pool professionals, and for good reason. Founded in 1966 (originally by five inventors making high-altitude balloons!), the company has evolved into the global leader in smart, sustainable water solutions. For the DIY homeowner, Pentair represents the intersection of rugged durability and silicon valley-tier technology. They pioneered the Variable Speed Pump revolution with the IntelliFlo®, saving American pool owners millions in energy costs. Today, their ecosystem focuses heavily on automation, allowing you to control your pump, heater, lights, and chemistry from a single app. While they are a favorite among professional builders, their "EC" (E-Commerce) line of equipment allows homeowners to access pro-grade technology with valid warranties for DIY installation.

Why We Trust Pentair Pool Products and Parts
Energy Efficiency Leaders: Recipient of the ENERGY STAR® Partner of the Year award for over a decade; their pumps are designed to pay for themselves in energy savings.

Smart Automation: The Pentair Home App and IntelliCenter systems offer best-in-class control over your pool ecosystem from anywhere in the world.

Professional Pedigree: The brand most often recommended and installed by pool builders for high-end residential pools.

Eco-Conscious: Dedicated to reducing water waste and energy consumption through "Green" technology innovations.

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