black manual air valve with pressure gauge and clamp attachment, featuring white dial and warning label

Pentair Manual Air Valve with Clamp | Nautilus D.E. Filter | 261003

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Regular price$125.99
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261003
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About This Item

The Pentair Manual Air Valve (261003) is the OEM replacement manual air relief assembly for Pentair Nautilus pool and spa D.E. filter models NS24, NS36, NS48, NS60, NS72 — originally manufactured under the PacFab and Purex brands, now part of the Pentair portfolio.

This manual air relief assembly releases trapped air from the filter tank, maintaining proper water flow and filtration efficiency. A correctly functioning air relief valve allows you to purge air from the system at startup and after backwashing — keeping your D.E. filter operating at rated pressure.

Specifications

Pentair Part Number 261003
Part Type Manual Air Relief Valve Assembly with Clamp
Dimensions 8-3/4 in. L × 4-1/4 in. H × 4-1/4 in. W
Quantity Included Each
Compatible Equipment Pentair Nautilus D.E. Filter — NS24, NS36, NS48, NS60, NS72
Legacy Brand PacFab / Purex (now Pentair)

Poolaroo Pro Tip

When replacing the air relief valve, inspect the clamp and any associated O-rings or gaskets at the same time. A worn clamp or degraded seal at the valve seat is a common source of air leaks that can cause the filter to lose prime or run at reduced efficiency. Replacing all sealing components together as a single service keeps the filter running reliably until the next scheduled maintenance interval.

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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