{"product_id":"ashcroft-94541xll-pressure-gauge-4-5-in-rear-flange","title":"Ashcroft 94541XLL Pressure Gauge 4.5 in Rear Flange","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ASHCROFT 94541XLL is a 4.5-inch dial analog pressure gauge designed for compound pressure measurement across a range of 30-0-30 psi. The gauge features a thermoplastic case and a rear flange mount configuration, making it well suited for panel installations where a flush or surface-mounted profile is required. Accuracy is rated at 0.5% of scale, which meets the demands of most commercial and industrial monitoring applications. This is a dry, non-liquid-filled gauge intended for systems where fluid dampening is not required. Installation is performed by licensed HVAC technicians, plumbers, and industrial instrumentation professionals.\u003c\/p\u003e\n\u003cp\u003eThis gauge is appropriate for use in HVAC systems, plumbing test setups, refrigeration equipment, and general industrial pressure monitoring where compound readings above and below atmospheric pressure need to be tracked. The rear flange mount allows the gauge to be secured directly to a panel or enclosure wall, keeping the dial face flush and readable. The 0.5-inch NPT rear connection threads directly into the pressure port of the system under test or monitoring.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCompound pressure range: 30-0-30 psi, reads both vacuum and positive pressure\u003c\/li\u003e\n  \u003cli\u003e4.5-inch analog dial for clear, at-a-distance readability\u003c\/li\u003e\n  \u003cli\u003e0.5% of scale accuracy for reliable monitoring\u003c\/li\u003e\n  \u003cli\u003eRear flange mount for panel or enclosure installation\u003c\/li\u003e\n  \u003cli\u003eThermoplastic case — lightweight and corrosion resistant\u003c\/li\u003e\n  \u003cli\u003eDry gauge (no liquid fill) for standard non-vibration environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation analog pressure gauge for HVAC, plumbing, and general industrial systems requiring a compound pressure range with a rear-flange-mount, 0.5-inch NPT connection.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eIsolate and depressurize the system fully before removing any existing gauge or making a new connection. Use an appropriate thread sealant on the NPT connection threads and tighten to snug fit — avoid overtightening, which can crack a thermoplastic case. The rear flange must be secured to the mounting panel before pressurizing the system. Verify the process pressure will not exceed the gauge range during normal or fault conditions.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Diameter\u003c\/strong\u003e: 4.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Range\u003c\/strong\u003e: 30-0-30 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.5% of scale\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Type\u003c\/strong\u003e: Analog\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Rear Flange\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 0.5 inches NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Material\u003c\/strong\u003e: Thermoplastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLiquid Filled\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 94541XLL\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ASHCROFT","offers":[{"title":"Default Title","offer_id":51543757979954,"sku":"94541XLL","price":486.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/760f8efc512ec2bc85a40aae2d63044d_325277e0-dae0-485a-afbd-70add3a7114b.jpg?v=1785921679","url":"https:\/\/voomisupply.com\/products\/ashcroft-94541xll-pressure-gauge-4-5-in-rear-flange","provider":"Voomi Supply","version":"1.0","type":"link"}