{"product_id":"mcdonnell-miller-115600-high-sensitivity-flow-switch-100-psi","title":"Mcdonnell Miller 115600 High Sensitivity Flow Switch 100 Psi","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MCDONNELL MILLER 115600 is a high sensitivity flow switch designed to detect liquid flow in hydronic cooling and water treatment piping systems. It features a brass housing rated to 100 psi and covers a flow detection range of 0.12 to 2.5 GPM with a set point of 2.5 GPM. The threaded NPT connection makes it straightforward to install inline without special fittings. At 5 inches in overall length and 4.5 pounds, it is a compact, durable unit suited for commercial and light industrial applications. HVAC technicians and plumbers install this switch to provide flow proving signals that protect equipment from running dry or without adequate flow.\u003c\/p\u003e\n\u003cp\u003eThe 115600 is rated for use in cooling systems and water treatment systems where liquid flow monitoring is required. Its high sensitivity design is well suited for low-flow applications where standard paddle-type switches may not reliably actuate. The NEMA 1 enclosure rating makes it appropriate for indoor installations in mechanical rooms, equipment rooms, and similar clean, dry environments. It is compatible with liquid media and is commonly installed on chilled water circuits, condenser water lines, and water treatment feed lines.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh sensitivity detection range of 0.12 to 2.5 GPM covers low-flow applications where standard switches fall short\u003c\/li\u003e\n  \u003cli\u003eBrass housing withstands 100 psi operating pressure\u003c\/li\u003e\n  \u003cli\u003eThreaded NPT connection for standard inline piping installation\u003c\/li\u003e\n  \u003cli\u003e5 inches overall length fits in tight mechanical spaces\u003c\/li\u003e\n  \u003cli\u003eNEMA 1 enclosure for indoor mechanical room use\u003c\/li\u003e\n  \u003cli\u003eSuitable for cooling systems and water treatment system applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with liquid media in cooling systems and water treatment systems. Intended for inline piping installations using standard NPT threaded fittings.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed plumber or qualified HVAC technician in accordance with applicable local plumbing codes. Shut off system pressure and fully drain the affected piping section before cutting in the switch. Use thread sealant rated for the system fluid on all NPT connections and verify no leaks before restoring pressure. The NEMA 1 rating limits installation to dry, indoor locations only — do not install in wet or outdoor environments.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Operating Pressure\u003c\/strong\u003e: 100 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlow Range\u003c\/strong\u003e: 0.12 to 2.5 GPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlow Set Point\u003c\/strong\u003e: 2.5 GPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Operating Temperature\u003c\/strong\u003e: 225 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHousing Material\u003c\/strong\u003e: Brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Style\u003c\/strong\u003e: Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNEMA Type\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Cooling Systems, Water Treatment Systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedia\u003c\/strong\u003e: Liquid\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: MCDONNELL MILLER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 115600\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MCDONNELL \u0026 MILLER","offers":[{"title":"Default Title","offer_id":51540467351858,"sku":"115600","price":1992.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d9e024d5ed8670cdd6bb12c2de5d3c1e.jpg?v=1785856137","url":"https:\/\/voomisupply.com\/products\/mcdonnell-miller-115600-high-sensitivity-flow-switch-100-psi","provider":"Voomi Supply","version":"1.0","type":"link"}