{"product_id":"weiss-instruments-tl40-030-4l-pressure-gauge-0-30-psi-4-in","title":"Weiss Instruments tl40-030-4l Pressure Gauge 0-30 Psi 4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe WEISS INSTRUMENTS tl40-030-4l is a 4-inch dial Trade Line pressure gauge rated from 0 to 30 psi with a dual-scale readout in both psi and kPa. It connects via a 1\/4 NPT lower port and is built around an all-brass movement with a precision gear and pinion mechanism for reliable, repeatable readings. The case is drawn steel with a black finish. Accuracy meets ASME B40.100 Grade B at plus or minus 3-2-3 percent across the dial. Licensed HVAC technicians, plumbers, and mechanical contractors install this type of gauge in low-pressure systems where a clear, accurate reading is required at a glance.\u003c\/p\u003e\n\u003cp\u003eThis gauge is suited for residential and light commercial applications where monitoring low-pressure gas, water, or fluid systems is required. The 4-inch dial face provides easy readout from a distance, making it practical for equipment rooms, boiler panels, and similar mechanical installations. The lower 1\/4 NPT connection is a standard configuration for direct panel or pipe mounting. Operating temperature range of -40 to 140 degrees F makes it compatible with a wide range of indoor and outdoor mechanical system environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0-30 psi range with dual-scale psi and kPa dial for versatile readout\u003c\/li\u003e\n  \u003cli\u003eASME B40.100 Grade B accuracy at plus or minus 3-2-3 percent\u003c\/li\u003e\n  \u003cli\u003e4-inch white coated metal lithographed dial with black and red graduations\u003c\/li\u003e\n  \u003cli\u003eAll-brass movement with precision gear and pinion construction\u003c\/li\u003e\n  \u003cli\u003e1\/4 NPT lower connection with brass socket and soft soldered joint\u003c\/li\u003e\n  \u003cli\u003eDrawn steel case with black finish and polycarbonate push-in window\u003c\/li\u003e\n  \u003cli\u003eBronze Bourdon tube with push-in restrictor for pulsation protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation pressure gauge for residential and commercial low-pressure mechanical systems requiring a 4-inch dial and 1\/4 NPT lower connection.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by a licensed plumber, HVAC technician, or mechanical contractor. Shut off system pressure and relieve any residual pressure in the line before removing an existing gauge or threading in a new one. Apply thread sealant appropriate for the system fluid to the NPT threads before installation. Do not over-tighten the connection, as brass fittings can be damaged by excessive torque.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Range\u003c\/strong\u003e: 0-30 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Size\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScale\u003c\/strong\u003e: Dual scale psi and kPa\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: plus or minus 3-2-3 percent, ASME B40.100 Grade B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection\u003c\/strong\u003e: 1\/4 NPT, Lower\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProcess Temperature Range\u003c\/strong\u003e: -40 to 140 degrees F (-40 to 60 degrees C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmbient Temperature Range\u003c\/strong\u003e: -40 to 140 degrees F (-40 to 60 degrees C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Material\u003c\/strong\u003e: Drawn steel, black finish\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWindow Material\u003c\/strong\u003e: Polycarbonate, push-in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBourdon Tube Material\u003c\/strong\u003e: Bronze\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSocket Material\u003c\/strong\u003e: Brass, soft soldered connection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMovement\u003c\/strong\u003e: All-brass precision gear and pinion\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePointer\u003c\/strong\u003e: Balanced aluminum with black finish\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRestrictor\u003c\/strong\u003e: Push-in type\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: WEISS INSTRUMENTS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: tl40-030-4l\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WEISS INSTRUMENTS","offers":[{"title":"Default Title","offer_id":51467644535090,"sku":"TL40-030-4L","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/313945658.png?v=1783909226","url":"https:\/\/voomisupply.com\/products\/weiss-instruments-tl40-030-4l-pressure-gauge-0-30-psi-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}