{"product_id":"mermade-filter-add-on-gauge-panel-per-filter-tank","title":"Mermade Filter Add-On, Gauge Panel (Per Filter Tank)","description":"\u003cp dir=\"ltr\" data-path-to-node=\"0\" class=\"first-token\"\u003e\u003cspan class=\"\"\u003eThe \u003c\/span\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"4\" class=\"\"\u003eMer-Made Commercial Filter Gauge Panel Add-On (Per Filter Tank)\u003c\/b\u003e\u003cspan\u003e is an engineered operational accessory manufactured by Mer-Made Filter,\u003c\/span\u003e\u003cspan\u003e Inc.\u003c\/span\u003e\u003cspan\u003e Designed for direct mounting on single horizontal pressure vessels or dedicated mounting per vessel in stacked dual-tank configurations,\u003c\/span\u003e\u003cspan\u003e this assembly monitors operational head loss,\u003c\/span\u003e\u003cspan\u003e media bed compaction,\u003c\/span\u003e\u003cspan\u003e and differential pressure (\u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\Delta P\" data-index-in-node=\"377\"\u003e$\\Delta P$\u003c\/span\u003e\u003cspan\u003e) across the sand bed.\u003c\/span\u003e\u003cspan\u003e It provides clear visual cues for backwash initiation,\u003c\/span\u003e\u003cspan\u003e ensuring compliance with commercial public pool codes (such as Model Aquatic Health Code \/ MAHC,\u003c\/span\u003e\u003cspan\u003e NSF\/ANSI Standard 50,\u003c\/span\u003e\u003cspan\u003e and local health department regulations).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"1\"\u003e\u003cspan\u003eThe assembly is built around a non-corrosive,\u003c\/span\u003e\u003cspan\u003e chemical-resistant mounting backplate—typically high-impact PVC or molded fiberglass (FRP)—outfitted with two heavy-duty,\u003c\/span\u003e\u003cspan\u003e liquid-filled commercial pressure gauges (or a specialized dual-pointer differential gauge),\u003c\/span\u003e\u003cspan\u003e along with Schedule 80 PVC interconnecting tubing,\u003c\/span\u003e\u003cspan\u003e brass\/bronze or 316 stainless steel isolation petcocks,\u003c\/span\u003e\u003cspan class=\"\"\u003e and manual air bleeder valves.\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable data-path-to-node=\"2\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,1,0,0\"\u003e\u003cb data-path-to-node=\"2,1,0,0\" data-index-in-node=\"0\"\u003eAccessory Reference\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,1,1,0\"\u003eMer-Made Pressure Differential Gauge Panel Assembly\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,2,0,0\"\u003e\u003cb data-path-to-node=\"2,2,0,0\" data-index-in-node=\"0\"\u003eApplication\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,2,1,0\"\u003ePer Filter Tank (1 panel required per single vessel; 2 panels recommended for stacked dual-tank systems)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,3,0,0\"\u003e\u003cb data-path-to-node=\"2,3,0,0\" data-index-in-node=\"0\"\u003eGauge Type\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,3,1,0\"\u003eDual 2.5 in or 4.0 in (63 mm or 100 mm) dial gauges (Inlet \/ Filter Influent \u0026amp; Outlet \/ Filter Effluent)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,4,0,0\"\u003e\u003cb data-path-to-node=\"2,4,0,0\" data-index-in-node=\"0\"\u003eAlternative Instrumentation\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,4,1,0\"\u003eOptional single-dial direct differential pressure (\u003cspan class=\"math-inline\" data-math=\"\\Delta P\" data-index-in-node=\"51\"\u003e$\\Delta P$\u003c\/span\u003e) gauge with color-coded clean\/dirty zones\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,5,0,0\"\u003e\u003cb data-path-to-node=\"2,5,0,0\" data-index-in-node=\"0\"\u003ePressure Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,5,1,0\"\u003e0 to 60 psi (standard) or 0 to 100 psi (0 to 4.14 bar \/ 0 to 6.89 bar)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,6,0,0\"\u003e\u003cb data-path-to-node=\"2,6,0,0\" data-index-in-node=\"0\"\u003eGauge Construction\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,6,1,0\"\u003e304 or 316 Stainless Steel casing, acrylic or polycarbonate shatter-resistant lens\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,7,0,0\"\u003e\u003cb data-path-to-node=\"2,7,0,0\" data-index-in-node=\"0\"\u003eGauge Internals\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,7,1,0\"\u003ePhosphor bronze or 316 SS Bourdon tube, brass or stainless steel movement\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,8,0,0\"\u003e\u003cb data-path-to-node=\"2,8,0,0\" data-index-in-node=\"0\"\u003eGauge Fill Fluid\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,8,1,0\"\u003eLiquid glycerin or silicone filled (dampens hydraulic pulsation and pump vibration)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,9,0,0\"\u003e\u003cb data-path-to-node=\"2,9,0,0\" data-index-in-node=\"0\"\u003eMounting Backplate\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,9,1,0\"\u003eHeavy-duty 1\/4\" to 3\/8\" thick industrial PVC, UV-stabilized ABS, or FRP composite\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,10,0,0\"\u003e\u003cb data-path-to-node=\"2,10,0,0\" data-index-in-node=\"0\"\u003eMounting Location\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,10,1,0\"\u003eFactory-bracketed to filter face piping manifold, vessel shell bracket, or nearby wall\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,11,0,0\"\u003e\u003cb data-path-to-node=\"2,11,0,0\" data-index-in-node=\"0\"\u003eInterconnect Tubing \/ Lines\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,11,1,0\"\u003e1\/4 in or 3\/8 in OD high-pressure semi-rigid polyethylene, nylon, or copper tubing\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,12,0,0\"\u003e\u003cb data-path-to-node=\"2,12,0,0\" data-index-in-node=\"0\"\u003eIsolation Valves \/ Petcocks\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,12,1,0\"\u003e1\/4 in NPT brass, bronze, or 316 stainless steel mini-ball valves or needle test cocks\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,13,0,0\"\u003e\u003cb data-path-to-node=\"2,13,0,0\" data-index-in-node=\"0\"\u003eAir Bleed Feature\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,13,1,0\"\u003eManual push-button or petcock air vent assembly integrated into the gauge lines\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,14,0,0\"\u003e\u003cb data-path-to-node=\"2,14,0,0\" data-index-in-node=\"0\"\u003eOperating Temperature Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,14,1,0\"\u003e32°F to 140°F (0°C to 60°C)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,15,0,0\"\u003e\u003cb data-path-to-node=\"2,15,0,0\" data-index-in-node=\"0\"\u003eOperating Pressure Rating\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,15,1,0\"\u003eUp to 100 psi (6.89 bar), matching vessel proof limits\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,16,0,0\"\u003e\u003cb data-path-to-node=\"2,16,0,0\" data-index-in-node=\"0\"\u003eCompliance \/ Standards\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"2,16,1,0\"\u003eNSF\/ANSI Standard 50, MAHC Section 5.7 compliant\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"3\"\u003e\u003cspan class=\"\"\u003eThe gauge panel taps directly into the high-pressure filter inlet piping (influent) above the internal distribution header and the low-pressure filter outlet piping (effluent) downstream of the underdrain collector.\u003c\/span\u003e\u003cspan\u003e By comparing the influent pressure against the effluent pressure,\u003c\/span\u003e\u003cspan\u003e operators determine the exact differential pressure across the sand bed.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\" data-path-to-node=\"4\"\u003eOperational Guidelines\u003c\/h3\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eClean Filter Baseline:\u003c\/b\u003e\u003cspan\u003e Typically 3 to 6 psi \u003c\/span\u003e\u003cspan class=\"math-inline\" data-math=\"\\Delta P\" data-index-in-node=\"44\"\u003e$\\Delta P$\u003c\/span\u003e\u003cspan\u003e across a newly backwashed media bed at design flow rate.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eBackwash Trigger Point:\u003c\/b\u003e\u003cspan\u003e A rise of \u003c\/span\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"34\"\u003e8 to 10 psi\u003c\/b\u003e\u003cspan\u003e over the clean baseline indicates media loading and signals the need for an immediate backwash cycle to prevent channeling,\u003c\/span\u003e\u003cspan\u003e loss of turnover rate,\u003c\/span\u003e\u003cspan\u003e or pump deadheading.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eShipping Weight:\u003c\/b\u003e\u003cspan\u003e Approx.\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"25\"\u003e6 to 12 lbs (2.7 to 5.4 kg)\u003c\/b\u003e\u003cspan\u003e per panel assembly,\u003c\/span\u003e\u003cspan\u003e complete with panel backplate,\u003c\/span\u003e\u003cspan\u003e gauges,\u003c\/span\u003e\u003cspan\u003e valves,\u003c\/span\u003e\u003cspan\u003e hardware,\u003c\/span\u003e\u003cspan\u003e and interconnect tubing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":68295634976879,"sku":"MF-GP","price":1113.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/mermade-filter-sand-filter-gauges-474-474.jpg?v=1794328235","url":"https:\/\/commercialpoolandspasupplies.com\/products\/mermade-filter-add-on-gauge-panel-per-filter-tank","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}