{"product_id":"aircomparts-liquid-filled-pressure-gauge","title":"AirComParts Liquid-Filled Pressure Gauge, 2 in. and 2.5 in. Dial, 1\/4 in. NPT","description":"\u003cp\u003eFill the case with fluid and the pointer stops dancing. That is the whole argument for a liquid-filled gauge: on a reciprocating compressor, a pulsating header, or anything bolted to a machine that shakes, a dry gauge needle blurs until it is unreadable and the movement beats itself to death. The fluid damps the needle, lubricates the gearing, and keeps condensation off the inside of the lens.\u003c\/p\u003e\n\u003ch3\u003eSizes and ranges\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2 in. dial, panel mount, 0 to 200 PSI (S2840)\u003c\/li\u003e\n\u003cli\u003e2.5 in. dial, panel mount, 0 to 200 PSI (S2845)\u003c\/li\u003e\n\u003cli\u003e2.5 in. dial, lower mount, 0 to 200 PSI (S2860)\u003c\/li\u003e\n\u003cli\u003e2.5 in. dial, lower mount, 0 to 300 PSI (S2855)\u003c\/li\u003e\n\u003cli\u003e2.5 in. dial, center back mount, 0 to 300 PSI (S2865)\u003c\/li\u003e\n\u003cli\u003e2.5 in. dial, lower mount, vacuum (S2870)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll six take a 1\/4 in. NPT connection.\u003c\/p\u003e\n\u003ch3\u003eWhere the vacuum gauge goes\u003c\/h3\u003e\n\u003cp\u003eThe vacuum variant is not a pressure gauge with a different scale on it. It reads below atmospheric, which is what you need on the suction side of a vacuum pump, on a pick and place rig, or on a vacuum chuck. Fitting one to a compressor discharge tells you nothing.\u003c\/p\u003e\n\u003ch3\u003eMounting\u003c\/h3\u003e\n\u003cp\u003ePanel mount gauges carry a front flange or U-clamp and sit in a cutout on a control panel or enclosure door. Lower and center back mount thread directly into the pipe or boss. Leave the fill plug or rubber bung on the top of the case open once the gauge is in service, or the fluid expands on a hot day and pushes the pointer off zero.\u003c\/p\u003e\n\u003cp\u003eAirComParts liquid-filled pressure gauges with 2 in. and 2.5 in. dials, 1\/4 in. NPT, in panel, lower and center back mount, covering 0 to 200 PSI, 0 to 300 PSI and vacuum.\u003c\/p\u003e","brand":"AirComParts","offers":[{"title":"2 in. Dial, Panel Mount, 0-200 PSI","offer_id":67997412655379,"sku":"S2840","price":17.49,"currency_code":"USD","in_stock":true},{"title":"2.5 in. Dial, Panel Mount, 0-200 PSI","offer_id":67997412688147,"sku":"S2845","price":16.99,"currency_code":"USD","in_stock":true},{"title":"2.5 in. Dial, Lower Mount, 0-200 PSI","offer_id":67997412720915,"sku":"S2860","price":15.99,"currency_code":"USD","in_stock":true},{"title":"2.5 in. Dial, Lower Mount, 0-300 PSI","offer_id":67997412753683,"sku":"S2855","price":16.99,"currency_code":"USD","in_stock":true},{"title":"2.5 in. Dial, Center Back Mount, 0-300 PSI","offer_id":67997412786451,"sku":"S2865","price":15.99,"currency_code":"USD","in_stock":true},{"title":"2.5 in. Dial, Lower Mount, Vacuum","offer_id":67997412819219,"sku":"S2870","price":16.49,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorstore.com\/products\/aircomparts-liquid-filled-pressure-gauge","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}