Pentair Sight Glass® 1-1/2" Slip | Sand & D.E. Filters | 50901600
Pentair Pool Products and Parts

Pentair Sight Glass® 1-1/2" Slip | Sand & D.E. Filters | 50901600

$75.99
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SKU:
50901600

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About This Item

OEM Replacement Sight Glass for Sand and D.E. Filters

The Pentair Sight Glass® (50901600) is the OEM replacement 1-1/2" slip sight glass for Pentair sand and D.E. filters. If your existing sight glass is cracked, cloudy, or leaking, this is the direct replacement part.

What It Does

The sight glass provides a visual inspection port on the filter's multiport valve or plumbing assembly, allowing you to observe water flow and clarity during backwash and rinse cycles. A damaged or fogged sight glass makes it impossible to judge when the backwash cycle is complete — replacing it restores accurate visual feedback during routine filter maintenance.

Specifications

Pentair Part Number 50901600
Connection Type Slip (solvent weld)
Connection Size 1-1/2"
Application Sand and D.E. Filters
Quantity Included 1

Pro Tip

Before ordering, confirm the connection size and type on your existing sight glass — this listing is the 1-1/2" slip version. If your plumbing uses threaded fittings rather than slip connections, verify the correct variant before purchasing. Match the part number on your existing component or consult your filter's installation manual to confirm fitment.

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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