I have a D.E. Filter with a Pentair 2" Multiport Valve P/N 261152 .
I've been looking at replacement Sight Glass part information and I'm curious about a particular Sight Glass. The Pentair P/N is 272550 "Sight Glass w/Vacuum Projector".
My original Sight Glass is an OEM "Praher" P/N E-17-S1. Here's the picture:
Here's the picture of the Pentair 272550 Sight Glass:
I'm assuming that the "vacuum projector" is the circled area. What is the vacuum projector? What does it do?
I've been looking at replacement Sight Glass part information and I'm curious about a particular Sight Glass. The Pentair P/N is 272550 "Sight Glass w/Vacuum Projector".
My original Sight Glass is an OEM "Praher" P/N E-17-S1. Here's the picture:
Here's the picture of the Pentair 272550 Sight Glass:
I'm assuming that the "vacuum projector" is the circled area. What is the vacuum projector? What does it do?