{"product_id":"dwyer-sfi-100-3-8-sight-flow-indicator-3-8-inch-npt","title":"Dwyer SFI-100-3\/8 Sight Flow Indicator 3\/8 Inch Npt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe DWYER SFI-100-3\/8 is a bronze-body sight flow indicator designed for visual confirmation of fluid or gas movement in pressurized piping systems. It accepts a 3\/8 inch NPT threaded connection and is rated to 125 psi working pressure with a maximum service temperature of 200 degrees F. The body is cast bronze with a removable glass window and a Buna-N seal, giving technicians a direct line of sight into the flow stream without interrupting the line. At 3 inches overall length and 1.1 pounds, it installs easily into tight plumbing runs. HVAC technicians, plumbers, and fluid-system mechanics use this indicator to verify active flow at a glance during commissioning and routine service checks.\u003c\/p\u003e\u003cp\u003eThe SFI-100-3\/8 is suited for a range of industrial and mechanical system applications including coolant tanks, hydraulic lines, hydraulic tanks, oil reservoirs, and pressure vessels. It supports both liquid and gas service. The horizontal and vertical mounting orientation options make it adaptable to most piping configurations encountered in commercial and light industrial installations. The compact 3-inch body fits standard service access panels and tight mechanical room plumbing without requiring additional fittings or reducers.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBronze body construction with removable glass window for field inspection or replacement\u003c\/li\u003e\n\u003cli\u003eRated to 125 psi maximum working pressure\u003c\/li\u003e\n\u003cli\u003eMaximum service temperature of 200 degrees F\u003c\/li\u003e\n\u003cli\u003e3\/8 inch NPT threaded connection, compatible with standard pipe fittings\u003c\/li\u003e\n\u003cli\u003eBuna-N seal material suitable for oil, coolant, and gas service\u003c\/li\u003e\n\u003cli\u003eMounts in horizontal or vertical orientation\u003c\/li\u003e\n\u003cli\u003eSafety tested construction with 3 inches overall length\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation sight flow indicator for 3\/8 inch NPT piping in coolant, hydraulic, oil, and gas pressure systems up to 125 psi and 200 degrees F.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed plumber or qualified mechanical technician. De-pressurize and drain the system completely before removing any existing fitting or installing this indicator. Use thread sealant or PTFE tape rated for the service fluid on the NPT threads. Verify mounting orientation matches the arrow or flow-direction marking on the body before final tightening.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Style\u003c\/strong\u003e: Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Pressure\u003c\/strong\u003e: 125 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Temperature\u003c\/strong\u003e: 200 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWindow Material\u003c\/strong\u003e: Glass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal Material\u003c\/strong\u003e: Buna-N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Orientation\u003c\/strong\u003e: Horizontal or Vertical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Use With\u003c\/strong\u003e: Gas, Liquid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Coolant Tanks, Hydraulic Lines, Hydraulic Tanks, Oil Reservoirs, Pressure Vessels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.1 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: DWYER\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: SFI-100-3\/8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DWYER","offers":[{"title":"Default Title","offer_id":51542930751794,"sku":"SFI-100-3\/8","price":344.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b534cd443f3de591e1144a7c78a9f355.jpg?v=1785911368","url":"https:\/\/voomisupply.com\/products\/dwyer-sfi-100-3-8-sight-flow-indicator-3-8-inch-npt","provider":"Voomi Supply","version":"1.0","type":"link"}