Pentair Sight Glass® 1-1/2" Slip | Sand & D.E. Filters | 50901600 Pool & Spa Lighting code-compliant propane combustion

code-compliant propane combustion

This is the dark gray version of the vinyl ring with insert

Filter Area 14

sized as a #2-137 bulkhead O-ring for the 2-inch bulkhead connection

Pentair Sight Glass® 1-1/2" Slip | Sand & D.E. Filters | 50901600 Pool & Spa Lighting code-compliant propane combustionOEM 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