{"product_id":"watts-1gk00134","title":"Watts LFM116 300 B 20-200 LS 4 Lead-Free Relief Valve, Ductile Iron, Flanged","description":"\u003cp\u003eThe Watts LFM116 300 B 20-200 LS 4 is a 4\" lead-free globe-pattern pilot-operated pressure relief \/ sustaining \/ backpressure control valve with Flanged connections, with a pilot adjustable from 20 to 200 psi. It features a ductile iron body and a buna-n seat. Rated to 600 psi and up to 160°F. This model is certified lead-free for potable-water installations.\u003c\/p\u003e\u003cp\u003eThis 4 inch ACV is armed with ArmorTek®, a patented 3-part advanced epoxy coating system designed to limit both microbial induced (MIC) and exposed metal substrate corrosion. This pressure relief control valve is designed to permit flow when upstream pressure is above the adjustable setpoint of the control pilot, and throttle toward closed when upstream pressure falls below the adjustable setpoint. When the valve is installed off the main line on the branch of a tee, it serves as a pressure relief control valve. It is normally closed and quickly opens when upstream pressure exceeds the pilot setting, relieving excess pressure. When valve installed in line connecting two distribution zones, the valve acts as a pressure sustaining control valve. When the valve is installed in line on the discharge of a pump, it acts as backpressure control valve. This Mustang valve style has a globe body pattern with class 300 flanged end connections, pilot adjustment range of 20-200 psi, configured with Buna-N elastomers, and a limit switch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBody construction with patented 3-part ArmorTek epoxy coating for advanced corrosion resistance\u003c\/li\u003e\n\u003cli\u003eGlobe body pattern with class 300 flanged end connections\u003c\/li\u003e\n\u003cli\u003e20-200 Pilot adjustment range\u003c\/li\u003e\n\u003cli\u003eBody and cover are constructed of strong and durable ductile iron (ASTM A536)\u003c\/li\u003e\n\u003cli\u003eIncludes limit switch\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat pressure setpoint can this valve be adjusted to?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe pilot on this valve is spring-ranged for 20–200 psi, so your target setpoint must fall inside that band. Watts builds the 115\/116 platform with several pilot springs (2-30, 10-75, 20-175, 20-200 and 30-300 psi); ordering a setpoint outside 20–200 psi means a different pilot, not a field adjustment.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the maximum working pressure?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThis unit is built as 300# Flanged and is rated to 600 psi. End connection sets the ceiling on this platform, and 150# and 300# bodies are not interchangeable — confirm the class matches your flange drilling before ordering.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat fluid temperature can the Buna-N trim handle?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThis valve is built with Buna-N elastomers, good to about 160°F. Watts offers the same body with Buna-N (to 160°F), FKM\/Viton (to 250°F) or EPDM (to 300°F) — pick the elastomer for your fluid temperature, not the body.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs this valve certified lead-free for potable water?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The \"LF\" prefix denotes Watts lead-free construction, compliant with the weighted-average 0.25% lead requirement of the Safe Drinking Water Act (NSF\/ANSI 372) for potable-water service.\u003c\/dd\u003e\n\u003c\/dl\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Relief\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Size:\u003c\/strong\u003e 4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Size:\u003c\/strong\u003e 4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e Flanged\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Ductile Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat \/ Seal Material:\u003c\/strong\u003e Buna-N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Class:\u003c\/strong\u003e Class 300\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Pressure (psi):\u003c\/strong\u003e 600\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Pilot-Operated Diaphragm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Style:\u003c\/strong\u003e Full\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1 Year Limited\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e LFM116 300 B 20-200 LS 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e up to 160°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead-Free:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Function:\u003c\/strong\u003e Pressure Relief \/ Sustaining \/ Backpressure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Platform:\u003c\/strong\u003e Mustang (M-Series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Pattern:\u003c\/strong\u003e Globe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePilot Adjustment Range (psi):\u003c\/strong\u003e 20-200\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Connection \/ Pressure Class:\u003c\/strong\u003e 300# Flanged\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfigured Options:\u003c\/strong\u003e Limit Switch;Strainer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e ArmorTek 3-Part Epoxy\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Watts","offers":[{"title":"Default Title","offer_id":54934907683115,"sku":"1GK00134","price":9592.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0277\/3168\/9577\/files\/f0a5d2db0a3e85feac9b1c993b1723bbf40578bd_627f66fe-1aa8-46ab-8c39-dea54a06df1a.jpg?v=1785980485","url":"https:\/\/citysupplygroup.com\/products\/watts-1gk00134","provider":"City Supply","version":"1.0","type":"link"}