{"product_id":"ashcroft-92879-vacuum-gauge-6-in-dial-1-4-npt-lower-mount","title":"Ashcroft 92879 Vacuum Gauge 6 in Dial 1\/4 Npt Lower Mount","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ASHCROFT 92879 is a vacuum pressure gauge designed for monitoring negative pressure in mechanical and process systems. It features a 6-inch analog dial with a measurement range of -30 to 0 inches of mercury (Hg), making it suited for applications where vacuum levels must be tracked precisely. Accuracy is rated at 0.25 percent of scale, which places it in the high-accuracy category for analog Bourdon tube instruments. The aluminum case and glass lens provide durability in standard service environments. A 1\/4-inch NPT lower-mount connection allows direct installation into pipe fittings without additional adapters in most configurations.\u003c\/p\u003e\n\u003cp\u003eThis gauge is commonly installed in HVAC evacuation monitoring, refrigeration system service, vacuum pump discharge lines, and light industrial process piping where vacuum measurement is required. The lower-mount configuration positions the connection at the 6 o'clock position on the gauge case, making it practical for panel-mount or direct pipe-mount installations. Licensed HVAC technicians, plumbers, and mechanical contractors are the typical end users for this class of instrument.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e6-inch diameter analog dial for high readability at a distance\u003c\/li\u003e\n  \u003cli\u003eVacuum range: -30 to 0 inches Hg\u003c\/li\u003e\n  \u003cli\u003e0.25 percent of scale accuracy for precise vacuum monitoring\u003c\/li\u003e\n  \u003cli\u003eBronze Bourdon tube construction for reliable pressure sensing\u003c\/li\u003e\n  \u003cli\u003eAluminum case with glass lens for durability in standard service conditions\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch NPT lower-mount connection for straightforward pipe integration\u003c\/li\u003e\n  \u003cli\u003eCRN certified for applicable Canadian pressure vessel registration requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or field-service gauge for systems requiring 1\/4-inch NPT lower-mount vacuum measurement instrumentation with a 6-inch dial format.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician, plumber, or qualified mechanical contractor familiar with pressure instrumentation. Isolate and depressurize or de-energize the system before removing any existing gauge or fitting. Apply thread sealant appropriate for the service medium to the NPT threads, taking care not to contaminate the Bourdon tube inlet. Verify the gauge range is appropriate for the maximum vacuum level of the system before placing into service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Range\u003c\/strong\u003e: -30 to 0 inches Hg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.25 percent of scale\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Type\u003c\/strong\u003e: Analog\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Diameter\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Lower\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Material\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBourdon Tube Material\u003c\/strong\u003e: Bronze\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLens Material\u003c\/strong\u003e: Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: CRN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 1082\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 5 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ASHCROFT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 92879\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ASHCROFT","offers":[{"title":"Default Title","offer_id":51542952411442,"sku":"92879","price":747.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/180bb9faa0748d66c7dcfbb71cd71c49_5048bca0-5868-4e14-887c-8be7e190abde.jpg?v=1785911993","url":"https:\/\/voomisupply.com\/products\/ashcroft-92879-vacuum-gauge-6-in-dial-1-4-npt-lower-mount","provider":"Voomi Supply","version":"1.0","type":"link"}