Morrison Bros. 710 Series 3 in. Anti-Siphon Solenoid Valves

Description

Normally Closed, Zero-Differential Anti-Siphon Valve for High-Flow Fuel & Coolant SystemsThe 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. NPTOrifice size: 3 in.Operating pressure differential: 0–45 PSIMaximum fluid temperature: 302°F (150°C)Minimum operating temperature: -40°FPower consumption: 48 wattsDimensions (710-0300): 8.8 in. L × 9.5 in. H × 4.5 in. WMust be installed horizontally with solenoid coil upright and vertical100-mesh inlet strainer required to protect piston assembly from particulate contaminationNOTE: 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.FeaturesNormally closed, hung piston designInstall in a horizontal pipeline in the upright vertical positionZero pressure differentialIntegral thermal relief allows the valve to relieve expansion pressure in the opposite direction of flowContinuous duty Class H standard coil operates at 120 voltsEnclosure is watertight and rated for hazardous locations—NEMA 3, 4X, 7 and 9; groups C and DSeveral optional coil voltages available710MO has manual override feature. Available in sizes ranging from ¾″ to 2″ for operation during a power outageRecommended for use with liquids having a maximum viscosity of 60 centistokesA strainer with a 100 mesh screen is recommended at the valve inletConstruction DetailsBody: Cast bronzeSeals: Viton®, Teflon®Solenoid housed in an integral, watertight, explosion-proof shellCertificationsCSA approved for hazardous locationsClass I, Groups C and DClass II, Groups E, F and GClass IIIT3CDownloadsInstallation Instructions (PDF Download)Spec Sheet (PDF Download)