{"product_id":"dwyer-instruments-lf251-100-4l-100-psi-liquid-filled-pressure-gauge","title":"Dwyer Instruments lf251-100-4l 100 Psi Liquid Filled Pressure Gauge","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe DWYER INSTRUMENTS lf251-100-4l is a liquid-filled industrial pressure gauge designed for demanding service environments where vibration, pulsation, and pressure spikes are common. The gauge features a 2.5-inch dial face with a 0 to 100 psi range and a 0.25-inch male pipe thread (MPT) lower-mount connection. The stainless steel case and glycerin fill dampen pointer movement to keep readings stable and legible. Plumbers, HVAC technicians, and industrial maintenance professionals install this gauge on pressurized fluid and gas systems requiring reliable local pressure indication.\u003c\/p\u003e\n\u003cp\u003eThis gauge is suited for residential, commercial, and light industrial applications where panel-mount or inline pressure monitoring is required. The lower-mount connection allows direct pipe installation without additional fittings in most standard configurations. The liquid-filled design makes it a practical choice for hydraulic lines, water systems, compressors, and process piping where continuous vibration or pressure surges would quickly damage a dry gauge.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLiquid-filled design dampens pointer vibration for accurate readings under pulsating pressure\u003c\/li\u003e\n  \u003cli\u003e2.5-inch dial face provides clear local readout in confined panel or pipe installations\u003c\/li\u003e\n  \u003cli\u003e0.25-inch MPT lower-mount connection for direct inline pipe installation\u003c\/li\u003e\n  \u003cli\u003e100 psi range suitable for common water, air, and fluid system monitoring\u003c\/li\u003e\n  \u003cli\u003eStainless steel case offers corrosion resistance in wet or harsh environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-install gauge for industrial and commercial pressurized systems requiring a 0.25-inch MPT lower-mount liquid-filled gauge with a 2.5-inch dial and 100 psi range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed plumber, HVAC technician, or qualified industrial maintenance professional. Depressurize and isolate the system before removing or installing any pressure gauge. Apply thread sealant tape to the MPT threads per standard practice, and do not overtighten, as this can crack the gauge socket. Verify system operating pressure does not exceed the rated gauge range before returning the system to service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Range\u003c\/strong\u003e: 0 to 100 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDial Size\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Size\u003c\/strong\u003e: 0.25 inches MPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Lower Mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFill Type\u003c\/strong\u003e: Liquid Filled\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCase Material\u003c\/strong\u003e: Stainless Steel\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: DWYER INSTRUMENTS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: lf251-100-4l\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DWYER INSTRUMENTS","offers":[{"title":"Default Title","offer_id":51234051260722,"sku":"LF251-100-4L","price":40.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307628850.png?v=1780116215","url":"https:\/\/voomisupply.com\/products\/dwyer-instruments-lf251-100-4l-100-psi-liquid-filled-pressure-gauge","provider":"Voomi Supply","version":"1.0","type":"link"}