white plastic cylindrical adapter with a threaded ring and a black rubber O-ring on a white background
two white plastic adapter union kit replacement parts with ridged outer rings and smooth cylindrical connectors
white plastic adapter union kit components including threaded ring, cylindrical adapter, and black O-ring gasket

Pentair Adapter Kit 2-1/2 in. x 2 in. for Quad D.E., Clean & Clear Plus, TR Series, Hi-Flow & FullFloXF Filters & Valves | 274426Z

Regular price$52.99
/
$9.99 flat shipping on orders under $100.
Pentair Authorized Dealer Full Manufacturer Warranty Support
No Hassle Returns 30 Days Paid Returns
SKU:
274426Z
  • Poolaroo Promise

    • Fast Shipping — Ships in 1–2 Business Days
    • 30-Day Risk-Free Returns — We Pay Return Shipping, No Restocking Fees
    • Powered By People Who Care - No Faceless Conglomerate

About This Item

The Pentair Adapter Kit, 2-1/2 in. x 2 in. (274426Z) is the OEM replacement pipe union adapter used across Pentair's Quad D.E., Clean & Clear Plus, and TR Series filters, as well as Hi-Flow and FullFloXF valve assemblies.

IMPORTANT: SOLD AS A COMPLETE KIT
This listing is for the complete 2-1/2 in. x 2 in. adapter union kit, not an individual piece. One kit contains everything needed for a single union connection point on your filter or valve.

This adapter kit forms the union transition where 2-1/2 in. plumbing steps down to 2 in. at the filter or valve port, allowing the connection to be broken for service or replacement without cutting into the surrounding pipe.

Specifications

Pentair Part Number 274426Z
Part Name Adapter Kit, 2-1/2 in. x 2 in.
Category Adapter Kits
Quantity Included 1 Kit
Size 2-1/2 in. x 2 in.

Fits Into

Brand Equipment Line Model / Part Number Notes
Pentair Quad D.E. 188592 (Quad D.E. 60) 2-1/2 in. x 2 in. adapter; must be purchased separately
Pentair Quad D.E. 188593 (Quad D.E. 80) 2-1/2 in. x 2 in. adapter; must be purchased separately
Pentair Quad D.E. 188594 (Quad D.E. 100) 2-1/2 in. x 2 in. adapter; must be purchased separately
Pentair Quad D.E. Quad 60 (Quad D.E. Filter 60) Adapter kit 2-1/2 in. x 2 in.
Pentair Quad D.E. Quad 80 (Quad D.E. Filter 80) Adapter kit 2-1/2 in. x 2 in.
Pentair Quad D.E. Quad 100 (Quad D.E. Filter 100) Adapter kit 2-1/2 in. x 2 in.
Pentair Hi-Flow 261050 (2 In. Hi-Flow Valve) 2 In. Hi-Flow Valves
Pentair Hi-Flow 261142 (2 In. Hi-Flow Valve) 2 In. Hi-Flow Valves
Pentair Hi-Flow 261049 (2 In. Hi-Flow Valve) 2 In. Hi-Flow Valves
Pentair Clean & Clear Plus Clean & Clear Plus 240 (240 sq. ft.) 2-1/2 in. x 2 in. I.D. White
Pentair Clean & Clear Plus Clean & Clear Plus 320 (320 sq. ft.) 2-1/2 in. x 2 in. I.D. White
Pentair Clean & Clear Plus Clean & Clear Plus 420 (420 sq. ft.) 2-1/2 in. x 2 in. I.D. White
Pentair Clean & Clear Plus Clean & Clear Plus 520 (520 sq. ft.) 2-1/2 in. x 2 in. I.D. White
Pentair TR Series TR100C Sand Filter —
Pentair TR Series TR140C Sand Filter —
Pentair FullFloXF FULLFLOXF Backwash Valve Pentair union

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.

Poolaroo Pro Tip

Hand-tighten the union nut until snug, then add a partial turn with a strap wrench — overtightening can crack the plastic union body or over-compress the internal seal. Because Pentair uses this same 2-1/2 in. x 2 in. union pattern across several filter and valve families, confirm the port size on your specific filter or valve model before ordering to avoid a mismatched fit.

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.
Format: you@example.com

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

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.

Recently viewed