{"product_id":"ashcroft-82137xll-pressure-gauge-3-5-in-30-0-30-psi-center-back","title":"Ashcroft 82137XLL Pressure Gauge 3.5 in 30-0-30 Psi Center Back","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ASHCROFT 82137XLL is a dual-scale analog pressure gauge designed to measure both positive and negative pressure across a 30-0-30 psi range. The 3.5-inch dial provides clear readability in the field, and the 1\/4-inch center back mount configuration suits panel installations and tight plumbing assemblies. The stainless steel case and stainless steel wetted parts deliver corrosion resistance in demanding service environments. Accuracy is rated at 1 percent of full scale, meeting typical requirements for HVAC, plumbing, and industrial process monitoring. This gauge ships dry with no liquid fill. Licensed plumbers, HVAC technicians, and process piping contractors are the primary installers.\u003c\/p\u003e\n\u003cp\u003eThe 82137XLL is suited for residential and light commercial applications where vacuum and pressure readings are both required on a single instrument. Common install scenarios include refrigeration system service ports, boiler circuits, compressed air panels, and pump discharge or suction monitoring. The center back mount allows the gauge face to sit flush against a panel or bracket without side-port clearance concerns. Where corrosive media or wet environments are a factor, the all-stainless wetted path reduces maintenance intervals compared to brass-wetted alternatives.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDual-range scale reads 30-0-30 psi, capturing both vacuum and positive pressure on one gauge\u003c\/li\u003e\n  \u003cli\u003e1 percent of full-scale accuracy for reliable process and system diagnostics\u003c\/li\u003e\n  \u003cli\u003e3.5-inch analog dial improves readability at typical working distances\u003c\/li\u003e\n  \u003cli\u003eStainless steel case and wetted parts resist corrosion in wet or chemically aggressive environments\u003c\/li\u003e\n  \u003cli\u003eDry, no-fill construction eliminates liquid-fill leakage concerns during installation or service\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch center back mount fits standard panel and manifold connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-install pressure gauge for residential and commercial plumbing, HVAC, and process piping systems requiring a 3.5-inch center back mount gauge with a 1\/4-inch connection.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed plumber or qualified HVAC technician following applicable local codes and ASME B40.100 gauge installation guidelines. Isolate and depressurize the system completely before removing an existing gauge or making a new connection. Apply thread sealant appropriate for the media being measured and avoid over-tightening the 1\/4-inch male thread, which can crack the socket or distort the bourdon tube. Do not use the gauge body as a wrench surface; apply torque only at the hex flats on the process connection.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\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: 1 percent of full scale\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Diameter\u003c\/strong\u003e: 3.5 inches\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: Center Back\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Material\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWetted Parts Material\u003c\/strong\u003e: Stainless Steel\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: 0.25 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: 82137XLL\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ASHCROFT","offers":[{"title":"Default Title","offer_id":51542385361202,"sku":"82137XLL","price":253.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b3bbea092f5b4780ca847ece6230fc4a_c4ecefd0-71f4-4c4e-921f-e3200b3624d1.jpg?v=1785899320","url":"https:\/\/voomisupply.com\/products\/ashcroft-82137xll-pressure-gauge-3-5-in-30-0-30-psi-center-back","provider":"Voomi Supply","version":"1.0","type":"link"}