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APPLICATION NOTE: This product was discontinued in June, 2021. The Guardian G6040 is a higher capacity, lower maintenance, and more affordable tempering valve that is designed as the successor to the G3700LF.
The G3700LF is suitable for use with a single emergency shower, single safety station or multiple installations of eyewash, eye/face wash, dual purpose eyewash/drench hose and drench hose units. The G3700LF valve is available in two additional configurations. The G3702LF is the same valve but installed in a surface-mounted stainless steel cabinet. The G3707LF is installed in a recess-mounted stainless steel cabinet.
We carry a full line of tempering valves ranging in capacities from 6 to 81 gallons per minute (GPM). The valve must be properly matched to the flow capacity of the safety station in order to deliver water within the tepid range.
Application: Tempering valve to blend hot and cold water to deliver tepid water. Valve has flow capacity of 3.0 to 34 gallons per minute (GPM). Valve can be used with emergency shower, safety station or multiple installations of eyewash, eye/face wash, dual purpose eyewash/drench hose and drench hose units.
Temperature Control: 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.
Fail Safe: 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 20 GPM of cold water at 30 PSI flow pressure. In event of loss of cold water supply, valve will close and not deliver water.
Flow Capacity: Refer to chart below for flow capacity of valve at specified pressure drops:
|System Pressure Drop (psi)||5||10||15||20||25||30||35||40|
|Flow rate (gallons per minute)||14||19||25||28||30||33||38||44|
|System Pressure Drop (bar)||0.3||0.7||1.0||1.4||1.7||2.1||2.4||2.8|
|Flow rate (liters per minute)||53||72||95||106||114||125||144||167|
Supply Temperature: Minimum hot water supply temperature is 140 °F (60 °C).
Supply Pressure: 30 PSI minimum supply pressure is required for proper operation of valve. Maximum supply pressure is 125 PSI. Maximum hot to cold water pressure differential is 5%.
Mounting: Furnished with heavy duty mounting bracket for securing valve to panel or wall.
Inlets: 3/4" 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.
Outlet: 1" NPT female outlet.
Quality Assurance: Valve is completely assembled and water tested prior to shipment. Valve is certified to ASSE 1071. Valve is certified to meet low lead requirements of wetted surface area less than 0.25% lead by weight.
Common replacement parts: With proper weekly cycling these valves should give you years of trouble-free service. If you encounter an issue, contact Guardian Technical Support to troubleshoot. If the factory identifies an component issue, we can special order any parts you may require.
Shipping weight - 18 lb (8.2 kg).
2-year manufacturer limited warranty.