{"title":"300 PSI Pressure Gauges","description":"\u003cp\u003e300 PSI pressure gauges are used when equipment or systems require pressure monitoring within a 0–300 PSI range. Using a gauge matched closely to the expected operating pressure makes the scale easier to read than selecting a much higher-range gauge.\u003c\/p\u003e\n\n\u003cp\u003eThis collection includes 300 PSI pressure gauges in different dial sizes, mounting configurations, and connection sizes. Available options include both dry and liquid-filled designs, allowing you to match the gauge to the installation and operating environment.\u003c\/p\u003e\n\n\u003cp\u003eWhen selecting a 300 PSI pressure gauge, verify more than just the pressure range. Dial diameter, connection size, and mounting position can determine whether the gauge will fit an existing installation. Lower-mount and center-back-mount configurations serve different equipment layouts and should be matched to the original connection location whenever possible.\u003c\/p\u003e\n\n\u003cp\u003eFor applications where vibration or pressure pulsation is a concern, compare our \u003ca href=\"\/collections\/liquid-filled-pressure-gauges\"\u003eliquid-filled pressure gauges\u003c\/a\u003e. For standard applications, you can also browse \u003ca href=\"\/collections\/dry-pressure-gauges\"\u003edry pressure gauges\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eUse the products below to compare 300 PSI gauges by dial size, mounting style, connection size, gauge type, and construction. For additional pressure ranges, browse all \u003ca href=\"\/collections\/pressure-gauges\"\u003epressure gauges\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"80467","title":"80467 Midland Liquid-Filled Pressure Gauge, 0–300 PSI, 4 in, Lower Mount","description":"\u003cp\u003eMidland part 80467 is a liquid-filled pressure gauge sized at 4 in and calibrated for 0 to 300 PSI, with a 1\/4 in NPT lower mount. The 80467 pairs a 300 PSI range with a 4 in face, giving this lower-mount liquid-filled gauge a larger viewing area than Midland's compact 1-1\/2 and 2-1\/2 in models.\u003c\/p\u003e\u003cp\u003eGlycerin inside the case dampens vibration and pressure pulsation, which helps keep the pointer more stable and supports the gauge movement over time. The selected scale keeps the usable portion of the dial focused on moderate system pressures, which can simplify day-to-day monitoring.\u003c\/p\u003e\u003cp\u003eWith a 4 in dial, this version favors visibility and a larger reading surface while retaining the liquid-filled lower-mount configuration. Midland lists the 80467 as a liquid-filled gauge with a 304 stainless steel construction, glycerin fill, 1\/4 in NPT connection, and lower-mount configuration.\u003c\/p\u003e\u003cp\u003eFor replacement or new installation work, verify the range and mounting position first, then confirm the connection and construction in the specifications below.\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":46895063073021,"sku":"80467","price":98.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/80467-pneumatic-pressure-gauge-4-in-dial-0-to-300-psi-measuring-range-0-to-300-psi-pressure-7954793.jpg?v=1770915908"},{"product_id":"80007","title":"80007 Midland Dry Pressure Gauge, 0–300 PSI, 2 in, Lower Mount","description":"\u003cp\u003eThe 80007 dry gauge is configured around a 0–300 PSI scale and a 2 in dial, with the pressure connection in a lower position. This model uses a 1\/4 in lower connection. Verify that the existing piping approaches the gauge from below before treating it as interchangeable with a back-mount version.\u003c\/p\u003e\u003cp\u003eThe 2-inch dial gives the gauge more viewing area than the smallest models without moving to the larger 2-1\/2-inch format. With a 0 to 300 PSI scale, this model covers the upper end of Midland's standard dry pressure gauge selection in this catalog group.\u003c\/p\u003e\u003cp\u003eConstruction for the series includes a steel case, brass connection components, and a plastic lens.\u003c\/p\u003e\u003cp\u003eThe dry-gauge design should be selected intentionally. If the installation is exposed to significant vibration or pressure pulsation, compare it with Midland's liquid-filled alternatives rather than assuming the two styles serve the same operating environment. The specification table below provides the final fit check for the gauge dimensions and pressure range.\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":46898175475965,"sku":"80007","price":12.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/MIDLANDINDUSTRIES_80007.jpg?v=1763701590"},{"product_id":"80307","title":"80307 Midland Dry Pressure Gauge, 0–300 PSI, 2 in, Center Back Mount","description":"\u003cp\u003eFor a 0–300 PSI dry-gauge requirement, 80307 provides a 2 in dial and center back mounting style. The rear 1\/4 in connection keeps the pressure port behind the gauge face; match that center-back layout to the existing equipment.\u003c\/p\u003e\u003cp\u003eIts 2-inch face is a versatile size when both visibility and installation space matter. This 0 to 300 PSI version is intended when the lower-range 100-, 160-, and 200-PSI gauges do not provide enough pressure capacity.\u003c\/p\u003e\u003cp\u003eConstruction for the series includes a steel case, brass connection components, and a plastic lens.\u003c\/p\u003e\u003cp\u003eThis model uses Midland's standard dry construction rather than a glycerin-filled case. That keeps it distinct from the liquid-filled gauges used where vibration or pulsation calls for additional damping. Use the specifications below as the final check for pressure range, dial size, mount position, and connection size before ordering.\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":46898189369597,"sku":"80307","price":13.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/MIDLANDINDUSTRIES_80307.jpg?v=1763702119"},{"product_id":"991249","title":"991249 Midland Water Test Gauge, 0–300 PSI, 2 in, 3\/4 in FHT","description":"\u003cp\u003eMidland 991249 is a water test gauge with a 0–300 PSI range, 2-inch dial, and 3\/4-inch female hose-thread connection. The smaller dial makes it the more compact of the standard water-test gauge options in this group.\u003c\/p\u003e\u003cp\u003eThis model is intended for water-pressure testing where the connection can be made directly through the 3\/4-inch hose-thread fitting. Its dedicated 0–300 PSI scale provides a clear pressure range for test work without using a broader industrial gauge configuration.\u003c\/p\u003e\u003cp\u003eChoose the 991249 when the installation calls for the 2-inch face and 3\/4-inch FHT connection. If a larger dial is preferred, compare it with Midland 991250; if a lazy-hand indicator is needed to retain a peak reading, compare it with 991251.\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":46898307498237,"sku":"991249","price":25.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/991249-water-test-gauge-34-in-connection-0-to-300-psi-pressure-7491141.jpg?v=1770897690"},{"product_id":"991251","title":"991251 Midland Water Test Gauge with Lazy Hand, 0–300 PSI, 3\/4 in FHT","description":"\u003cp\u003eMidland 991251 is the lazy-hand version of the 0–300 PSI water test gauge family. This configuration is distinct from Midland's standard 991249 and 991250 water-test gauges and should be selected when the specified gauge style calls for the lazy-hand design.\u003c\/p\u003e\u003cp\u003eThe gauge uses a 3\/4-inch female hose-thread connection for the test hookup. Its 0–300 PSI range matches the other water-test gauges in this group, while the lazy-hand configuration is the feature that separates this model from the standard versions.\u003c\/p\u003e\u003cp\u003eChoose the 991251 when the installation specifically calls for Midland's lazy-hand water test gauge. Confirm the 0–300 PSI range and 3\/4-inch FHT connection before ordering.\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":46898338595069,"sku":"991251","price":28.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/991251-water-test-gauge-with-lazy-hand-34-in-connection-0-to-300-psi-pressure-4858379.jpg?v=1770896768"},{"product_id":"991250","title":"991250 Midland Water Test Gauge, 0–300 PSI, 2-1\/2 in, 3\/4 in Hose Thread","description":"\u003cp\u003eThe 991250 Midland water test gauge uses a 2-1\/2-inch dial with a 0–300 PSI pressure range and 3\/4-inch hose-thread connection. Compared with the 2-inch 991249, the larger face provides more dial area for reading pressure during testing.\u003c\/p\u003e\u003cp\u003eThis is the standard larger-dial option in Midland's water-test group. It does not use the lazy-hand feature found on 991251, so the selection comes down primarily to the 2-1\/2-inch face, 0–300 PSI range, and hose-thread connection.\u003c\/p\u003e\u003cp\u003eUse the 991250 when a larger dial is preferred for water-pressure testing and the equipment accepts the 3\/4-inch hose-thread connection. Confirm the connection and gauge size against the test point before ordering.\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":46900138213629,"sku":"991250","price":25.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/991250-water-test-gauge-34-in-connection-0-to-300-psi-pressure-2173412.jpg?v=1770896227"},{"product_id":"80067","title":"80067 Midland Liquid-Filled Pressure Gauge, 0–300 PSI, 2-1\/2 in, Lower Mount","description":"\u003cp\u003eWhen the application calls for a 0 to 300 PSI gauge, the 80067 provides a glycerin-filled Midland design with a 2-1\/2 in face and a 1\/4 in NPT lower connection. Its scale covers a practical mid-range pressure band without forcing the user to read a much broader high-pressure dial.\u003c\/p\u003e\u003cp\u003eThe 300 PSI lower-mount version gives buyers a midpoint between 200 and 400 PSI models in the same 2-1\/2 in family. The 2-1\/2 in face provides a practical balance between dial visibility and overall gauge size for general equipment use.\u003c\/p\u003e\u003cp\u003eMidland specifies a stainless steel case, copper-alloy wetted parts, and a polycarbonate window, along with ±1.5% of span accuracy and a -104°F to 158°F temperature range.\u003c\/p\u003e\u003cp\u003eIts glycerin fill helps calm pointer movement caused by vibration and pulsation, while also lubricating the internal movement for longer service life. The key selection points for this SKU are its pressure span, dial diameter, and mount location; the full specification table below provides the remaining details.\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":46900205584637,"sku":"80067","price":35.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/MIDLANDINDUSTRIES_80067.jpg?v=1763729093"},{"product_id":"80207","title":"80207 Midland Liquid-Filled Pressure Gauge, 0–300 PSI, 2-1\/2 in, Center Back Mount","description":"\u003cp\u003eThe 80207 is the 0 to 300 PSI option in Midland's liquid-filled gauge family, pairing a 2-1\/2 in dial with a rear 1\/4 in NPT connection. Its scale covers a practical mid-range pressure band without forcing the user to read a much broader high-pressure dial.\u003c\/p\u003e\u003cp\u003eThe 300 PSI range places this center-back gauge between the 200 and 400 PSI options, giving buyers a more closely matched scale when 300 PSI is the needed ceiling. The 2-1\/2 in face provides a practical balance between dial visibility and overall gauge size for general equipment use.\u003c\/p\u003e\u003cp\u003eThe enclosure is stainless steel, with copper-alloy wetted parts and a polycarbonate window. That construction is the same rugged platform Midland uses across this liquid-filled gauge family.\u003c\/p\u003e\u003cp\u003eBecause the gauge is glycerin filled, it is better suited to vibrating or pulsating service than a comparable dry gauge; the fill also lubricates the movement. Use the detailed specifications below as the final fit check for pressure range, connection size, mount position, and material construction.\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":46900221280509,"sku":"80207","price":37.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/MIDLANDINDUSTRIES_80207.jpg?v=1763729791"}],"url":"https:\/\/gethydraulics.com\/collections\/300-psi-pressure-gauges.oembed","provider":"Union Hydraulics","version":"1.0","type":"link"}