{"product_id":"guardian-g3900-water-temepering-valve-81-gpm-capacity-c1977595","title":"Guardian G3900 Water Temepering Valve, 81 GPM Capacity","description":"\u003cspan style=\"font-weight: bold;\"\u003eAPPLICATION:\u003c\/span\u003e Tempering valve to blend hot and cold water to deliver tepid water. Valve has flow capacity of 3.0 to 81 gallons per minute (GPM). Valve can be used with single installation of emergency showers and safety stations, and with multiple installations of emergency shower, eyewash, eye\/face wash, dual purpose eyewash\/drench hose, drench hose and safety station units.  \u003cbr\u003e\u003cbr style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eTEMPERATURE CONTROL:\u003c\/span\u003e Valve has bimetallic thermostat that senses incoming water temperature and automatically blends water to 85°F (29°C). High temperature limit stop is set to 90°F (32°C). Valve has dial thermometer on outlet to monitor temperature of delivered water. Note: Valve may need to be adjusted when installed based on incoming water temperature. Refer to ?Installation Instructions? for further information. \u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eFAIL SAFE:\u003c\/span\u003e In event of restriction or failure of hot water supply, internal bypass allows valve to deliver cold water to emergency unit. In bypass mode, valve will deliver 40 GPM of cold water at 30 PSI flow pressure. In event of loss of cold water supply, valve will close and not deliver water.  \u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eFLOW CAPACITY:\u003c\/span\u003e Refer to chart below for flow capacity of valve at specified pressure drops: \u003cbr\u003e System Pressure Drop (PSI)      5      10   15      20      25      30      35       40 \u003cbr\u003eFlow Rate (GPM)                                       53    64      72      81      90      99     108    117  \u003cbr\u003e\u003cbr\u003eSystem Pressure Drop (bar)           .3         .7        1.0       1.4        1.7        2.4        2.4        2.8 \u003cbr\u003eFlow Rate (Liters per Minute)    201   242     273     307      341       374      409       443  \u003cbr\u003e\u003cbr style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eSUPPLY PRESSURE:\u003c\/span\u003e 30 PSI minimum supply pressure is required for proper operation of valve. Maximum supply pressure is 125 PSI. \u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eMOUNTING:\u003c\/span\u003e Furnished with heavy duty mounting bracket for securing valve to panel or wall. \u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eINLETS:\u003c\/span\u003e 1 1\/4\" NPT female hot and cold water inlets. Inlets can be rotated 360 degrees for top or bottom supply. Each inlet has integral water strainer, check valve and supply stop. \u003cbr\u003e\u003cbr style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eOUTLET:\u003c\/span\u003e 1 1\/4\" NPT female outlet.  \u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eQUALITY ASSURANCE:\u003c\/span\u003e Valve is completely assembled and water tested prior to shipment. Unit is certified to ASSE 1071.  Important: Pursuant to ANSI Z358.1-2004, the water delivered by emergency equipment should be ?tepid?. Tepid is defined as moderately warm or lukewarm, and is generally considered to be between 60°F (15°C) and 90°F (32°C). However, in certain circumstances, a chemical reaction may be accelerated or otherwise affected by the water temperature. Please consult with a medical advisor to determine the optimum delivered water temperature prior to specifying, installing or using a tempering valve.  Tempering valves will not deliver the appropriate water temperature if the system has not been sized correctly. Please refer to the flow capacities and supply pressure requirements listed above when designing the tempered water system and selecting tempering valves.  Tempering valves, like all emergency eyewash and shower equipment, must be installed in accordance with the manufacturer?s instructions and maintained on a regular basis. Under ANSI Z358.1-2004, all emergency equipment should be activated weekly and inspected at least annually. Tempering valves should be treated the same and, in addition, must be regularly cleaned and cycled.","brand":"Guardian","offers":[{"title":"Default Title","offer_id":34190529495084,"sku":"C1977595","price":1352.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0332\/9992\/2988\/products\/C1977595_main-1.jpg?v=1590091100","url":"https:\/\/www.sustainablesupply.com\/products\/guardian-g3900-water-temepering-valve-81-gpm-capacity-c1977595","provider":"Sustainable Supply","version":"1.0","type":"link"}