Morrison Bros. 710SS Series 2 in. Stainless Steel Anti-Siphon Solenoid Valves w/ PTFE Seal - Threaded

2-Inch Stainless Steel Anti-Siphon Solenoid Valve, Normally Closed, PTFE Seal, Threaded NPT

The Morrison Bros. 710SS in 2" NPT delivers high-flow fluid isolation in a normally closed, hung-piston configuration, rated to 105 PSI with a CV of 26. At this size, the valve is best suited for main supply or return headers in large-scale data center liquid cooling systems (including CDU inlet/outlet connections, facility-level loop isolation, and trunk lines feeding multiple rack rows in hyperscale or HPC environments). Like all 710SS models, it fails safe to the closed position on loss of power or control signal, blocking siphoning from bulk fluid headers in the event of a downstream leak or system shutdown triggered by a leak detection array.

The 304 stainless steel body and PTFE seals handle deionized water, glycol blends, and synthetic dielectric fluids without ion leaching or elastomer degradation, which is critical for maintaining fluid purity in micro-channel cold plates. Zero pressure differential operation ensures the valve opens fully even under the low-pressure start-up conditions of large loop commissioning. The integral thermal relief feature prevents pressure accumulation in isolated segments during peak thermal loads. This 2" valve also sees frequent use in petroleum product transfer, chemical processing, and industrial wash-down systems.

Key specifications:

• Size: 2" NPT
• Body: 304 stainless steel
• Seals: PTFE
• Piston: Stainless steel
• Orifice: 1-1/2"
• CV: 26
• Operating pressure differential: 0–105 PSI
• Max fluid temperature: 356°F
• Min operating temperature: -40°F
• Power consumption: 30 watts
• Coil: Continuous duty Class H, 120V AC standard (multiple voltages available)
• Enclosure: Watertight, explosion-proof — NEMA 3, 4X, 7, 9; Groups C and D
• Max fluid viscosity: 60 centistokes
• Certifications: UL/cULus Listed; Class I Div. 1 Groups C&D; Class II Div. 1 Groups E, F, G; Class III
• Install orientation: Horizontal pipeline, upright vertical position

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
• Several optional coil voltages available
• Enclosure is watertight and rated for hazardous locations—NEMA 3, 4X, 7 and 9; groups C and D
• 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: Stainless steel
• Seals: Viton®, PTFE
• 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