{"product_id":"general-filters-3610-vacuum-filter-restriction-indicator-gauge","title":"General Filters 3610 Vacuum Filter Restriction Indicator Gauge","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe General Filters 3610 is a vacuum filter restriction indicator gauge designed to monitor filter loading on liquid fuel filtration systems. It features a 1.5-inch dial face and reads vacuum up to 30 inches of mercury (in Hg), giving technicians a clear visual reference for filter condition without removing the filter housing. The 1\/8-inch male NPT connection threads directly into compatible Gar-Ber spin-on filter assemblies. The sensing element uses a copper alloy tube, and the gauge is not liquid filled, keeping the design straightforward and maintenance-free in typical fuel system environments.\u003c\/p\u003e\u003cp\u003eThis gauge is used in residential and light commercial oil-fired heating systems equipped with Gar-Ber spin-on fuel oil filters. It mounts at the filter head and provides a continuous vacuum reading that indicates when the filter element is loading up and approaching the end of its service life. HVAC and oil burner technicians typically install this gauge as part of a routine filter assembly upgrade or during a scheduled tune-up. It is well suited for any application where monitoring filter restriction is preferable to relying on fixed service intervals.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e30 in Hg vacuum range provides clear indication of filter restriction levels\u003c\/li\u003e\n\u003cli\u003e1.5-inch dial face for easy reading in tight equipment spaces\u003c\/li\u003e\n\u003cli\u003e1\/8-inch MNPT connection for direct thread-in installation on compatible filter heads\u003c\/li\u003e\n\u003cli\u003eCopper alloy sensing tube construction suited for fuel oil service\u003c\/li\u003e\n\u003cli\u003eNon-liquid-filled design reduces complexity and potential for seal-related failures\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for Gar-Ber spin-on filter assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Gar-Ber spin-on fuel oil filters. Verify 1\/8-inch MNPT port availability on the filter head before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by licensed oil burner technicians or qualified HVAC service professionals. Shut off the fuel supply and de-energize the burner before servicing any fuel filter assembly. Use appropriate thread sealant rated for petroleum fuel service on the MNPT threads. Do not overtighten the gauge into the filter head port, as the copper alloy tube can be damaged by excessive torque.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVacuum Range\u003c\/strong\u003e: 30 inches of mercury (in Hg)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDial Size\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: 1\/8-inch Male NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquid Filled\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensing Element Material\u003c\/strong\u003e: Copper Alloy\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: General Filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 3610\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GENERAL FILTERS","offers":[{"title":"Default Title","offer_id":51467514478898,"sku":"3610","price":19.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/313946208.jpg?v=1783906165","url":"https:\/\/voomisupply.com\/products\/general-filters-3610-vacuum-filter-restriction-indicator-gauge","provider":"Voomi Supply","version":"1.0","type":"link"}