MORRISON BROS. Morrison Bros. 710 Series 3 in. Anti-Siphon Solenoid Valves 710---0300 1V

Normally Closed, Zero-Differential Anti-Siphon Valve for High-Flow Fuel & Coolant Systems The Morrison Bros. 710 Series 3-inch solenoid valve delivers fail-safe anti-siphon protection on the dispensing side of fuel system pipelines, blocking accidental product loss in the event of a downstream fracture below the tank's liquid level. The valve stays closed until triggered by an electronic signal (such as a pump or dispenser switching on), and its larger 3-inch bore makes it a strong candidate for high-flow isolation duty in data center liquid cooling infrastructure where it can protect CDU manifolds and coolant reservoirs from catastrophic drainage during a power loss or emergency shutdown event. The cast bronze body carries FKM seals rated to a maximum fluid temperature of 302°F (150°C) and accommodates liquids up to 60 centistokes viscosity. The hung piston design actuates at zero pressure differential, ensuring dependable operation in low-pressure or gravity-fed loops without relying on system pressure to open. Integrated thermal relief vents expansion pressure back against the flow direction to protect upstream components from pressure spikes. Note that the 3-inch model has a lower maximum operating pressure differential of 45 PSI compared to smaller sizes in the 710 Series. Verify this fits your system design before specifying. Key specifications: Connection size: 3 in. NPT Orifice size: 3 in. Operating pressure differential: 0–45 PSI Maximum fluid temperature: 302°F (150°C) Minimum operating temperature: -40°F Power consumption: 48 watts Dimensions (710-0300): 8.8 in. L × 9.5 in. H × 4.5 in. W Must be installed horizontally with solenoid coil upright and vertical 100-mesh inlet strainer required to protect piston assembly from particulate contamination NOTE: Product can only be pumped in one direction, the direction of the flow arrow. Not designed for use as an overfill prevention or process control valve. Features Normally closed, hung piston design Install in a horizontal pipeline in the upright vertical position Zero pressure differential Integral thermal relief allows the valve to relieve expansion pressure in the opposite direction of flow Continuous duty Class H standard coil operates at 120 volts Enclosure is watertight and rated for hazardous locations—NEMA 3, 4X, 7 and 9; groups C and D Several optional coil voltages available 710MO has manual override feature. Available in sizes ranging from ¾″ to 2″ for operation during a power outage Recommended for use with liquids having a maximum viscosity of 60 centistokes A strainer with a 100 mesh screen is recommended at the valve inlet Construction Details Body: Cast bronze Seals: Viton®, Teflon® Solenoid housed in an integral, watertight, explosion-proof shell Certifications CSA approved for hazardous locations Class I, Groups C and D Class II, Groups E, F and G Class III T3C Downloads Installation Instructions (PDF Download)Spec Sheet (PDF Download)