{"product_id":"pentair-hiflow-sight-glass-w-vacuum-projector-272550","title":"Pentair Sight Glass for HiFlow Multiport Valve for Sand Filters | 272550","description":"\u003cp\u003eThe Pentair Sight Glass, (272550) is the OEM replacement sight glass for the HiFlow Six-Way 1-1\/2 In. Top Mount Multiport Valve and the TA Tagelus Top Mount Multiport Valve used with Pentair sand filters.\u003c\/p\u003e\n\u003cp style=\"background-color: #fff3cd; border: 2px solid #FFEAA7; padding: 15px; border-radius: 5px; margin: 15px 0; color: #856404;\"\u003e\u003cstrong\u003eIMPORTANT: DATE-OF-MANUFACTURE RESTRICTION\u003c\/strong\u003e\u003cbr\u003eThis sight glass was not included on valves manufactured before March 1, 1993. Verify your valve's manufacture date before ordering — if your valve predates this cutoff, it was not built to accept this component.\u003c\/p\u003e\n\u003cp style=\"background-color: #fff3cd; border: 2px solid #FFEAA7; padding: 15px; border-radius: 5px; margin: 15px 0; color: #856404;\"\u003e\u003cstrong\u003eTHIS SIGHT GLASS IS NON-VENTED - COMPATIBLE REPLACEMENT\u003c\/strong\u003e\u003cbr\u003eThis sight glass \u003cstrong\u003edoes not have a vent (vacuum projector)\u003c\/strong\u003e. Pentair service confirms prior versions of this same part WERE vented (vacuum\/VAC projector), and this has been replaced with a non-vented sight glass.  The vacuum projector model was discontinued due to excessive wear and leakage.  This sight glass is a compatible replacement for vented sight glasses for High Flow Six-Way 1-1\/2\" Top Mount Valves after March 1st, 1993.\u003c\/p\u003e\n\u003cp\u003eThe sight glass mounts to the multiport valve body and provides a visual indicator of water flow and clarity during filter operation and backwash cycles. A missing or cracked sight glass can result in loss of visibility into valve performance and potential leakage at the port.  Vented sight glass parts are prone to wear from the flapper, cracking and continual leakage.  Thus this non-vented model is now being used and will ensure a solid seal for your sight glass when backwashing and under pressure changes.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0; border: 1px solid #ccc;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePentair Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e272550\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePart Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eSight Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePart Category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eSight Glasses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eQuantity Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e1 (Each)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFits Into\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0; border: 1px solid #ccc;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eEquipment Line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eModel \/ Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003ePentair\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eHiFlow\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e262504\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eSix-Way 1-1\/2 In. Top Mount HiFlow Valve. Not present on valves manufactured before March 1, 1993.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003ePentair\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eHiFlow\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e262505\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eSix-Way 1-1\/2 In. Top Mount HiFlow Valve. Not present on valves manufactured before March 1, 1993.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003ePentair\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eTA Tagelus Filter Valves\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e262506\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eTop Mount Multiport Valve. Not present on valves manufactured before March 1, 1993.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eCompatibility 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.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003ePoolaroo Pro Tip\u003c\/h3\u003e\n\u003cp\u003eWhen replacing the sight glass, inspect the \u003ca href=\"https:\/\/poolaroo.com\/products\/pentairwaterpoolandspainc_271106z\"\u003e\u003cstrong\u003esight glass gasket\u003c\/strong\u003e\u003c\/a\u003e at the same time — the gasket seals the glass against the valve body and is a common source of weeping leaks if left in service when the glass is replaced. Confirm your valve's manufacture date before ordering: valves built before March 1, 1993 do not have a sight glass port and cannot accept this part.\u003c\/p\u003e\n\u003cp style=\"background-color: #fff3cd; border: 2px solid #FFEAA7; padding: 15px; border-radius: 5px; margin: 15px 0; color: #856404;\"\u003e\u003cstrong\u003eSIGHT GLASS GASKET NOT INCLUDED - SOLD SEPARATELY\u003c\/strong\u003e\u003cbr\u003eIf your sight glass is leaking from the base, your gasket may also need to be replaced. The replacement gasket for this is \u003ca title=\"Replacement Sight Glass Gasket for Pentair High Flow Valves at Poolaroo\" href=\"https:\/\/poolaroo.com\/products\/pentairwaterpoolandspainc_271106z\"\u003eP\/N 271106Z\u003c\/a\u003e.\u003c\/p\u003e\n\u003c!-- wft:processed:manual:2026-04-30 --\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":51774150476051,"sku":"272550","price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/pentair-sight-glass-non-vented-hiflow-multiport-valve-272550-5.webp?v=1779998487","url":"https:\/\/poolaroo.com\/products\/pentair-hiflow-sight-glass-w-vacuum-projector-272550","provider":"Poolaroo","version":"1.0","type":"link"}