Pentair 272550 sight glass with vacuum projector for multiport valvesPentair Sight Glass with Vacuum Projector, 272550 In stock$1899
Pentair 272550 sight glass with vacuum projector for multiport valves
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Pentair Sight Glass with Vacuum Projector, 272550

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$1899
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Quick overview

  • Genuine Pentair Factory part 272550, the sight glass Pentair supplies for these multiport valves.
  • Shows the backwash The window on the waste port that tells you when the water coming off the filter has run clear.
  • Vacuum projector version This is the sight glass fitted with the vacuum projector, not the plain glass.
  • Fits several valve families Used across Pentair PacFab, American Products and Praher multiport valves.
  • Stops guesswork on backwash Without a clear window you are either cutting backwash short or wasting water.
  • Common wear item Sight glasses cloud, craze and crack with sun and chemistry, so they are a routine replacement.
Full description and specifications ↓

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Product details

Pentair 272550 is the sight glass with vacuum projector for Pentair multiport valves. It is the genuine Pentair part.

What it does

The sight glass is the clear window in the waste line coming off the multiport valve. When you backwash a sand or DE filter, that window is how you judge the job: the water leaves dark and dirty, and you run the backwash until it comes through clear. A clouded, crazed or cracked sight glass takes that judgment away, so you either stop too early and leave the filter loaded, or run far longer than needed and dump water for nothing.

Fitment

This version is the one fitted with the vacuum projector. It is used across the Pentair PacFab top mount and side mount multiport valves, the American Products H and M Series valves, and the Pentair Praher multiport valves.

Fitting it

The glass threads into the valve body. Seal the threads with a sealant made for pool plumbing and tighten it by feel. Overtightening is the usual reason a new sight glass fails early.

Specifications
Brand Pentair
Manufacturer part number 272550
UPC 788379674922
Type Sight glass with vacuum projector
Part type Filter valve part
Fits Pentair American Products 2 inch H and M Series multiport valves, Pentair PacFab top mount and side mount multiport valves, Pentair PacFab 6 way 1-1/2 inch Hi-Flo multiport valve, Pentair Praher 2 inch multiport valves
Shipping weight 0.01 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What is a sight glass for?
It is the clear window on the valve waste line. During backwash you watch it until the water runs clear, which tells you the filter has been cleaned out.
Does this one have the vacuum projector?
Yes. This listing is the sight glass with the vacuum projector fitted.
Which valves does it fit?
Pentair PacFab top mount and side mount multiport valves, Pentair American Products H and M Series multiport valves, and Pentair Praher multiport valves.
Do I need thread sealant?
Sight glasses thread into the valve body. Use a sealant rated for pool plumbing and do not overtighten, since the glass will craze or crack if it is forced.
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