Ansul EGVSO-75 Gas Valve, Electrical, (120 VAC, 60 Hz) 3/4 in. Pipe 013707

The Ansul 013707 (EGVSO-75) is the mission-critical electrical fuel isolation valve for commercial kitchen gas lines. Engineered with normally closed (NC) safety logic, the EGVSO-75 physically blocks the flow of natural gas or liquid propane unless the system is actively powered and monitored. In the event of a fire trip, a building power failure, or a manual emergency stop, the valve snaps shut instantly, starving the cooking battery of fuel before a localized flare-up can escalate.

Unlike traditional mechanical valves that rely on cable-and-pulley systems, the EGVSO-75 uses an electromagnetic interlock to achieve instantaneous shutdown. When power is cut -- whether intentionally or by fault -- the internal compression spring returns the valve plunger to its closed seat without any human intervention. This fail-to-safe default is the defining characteristic of modern solenoid gas valve design.

Conduit-Based Routing Advantage

In many modern kitchen architectures -- high-rise hotels, stadiums, and historical renovations -- routing mechanical cable from a control head to the gas line is physically impossible or cost-prohibitive. The EGVSO-75 replaces that cable run with standard electrical interlock wiring, allowing installers to navigate tight corners and floor-to-ceiling offsets with ease and eliminating cable-bind issues associated with corner pulleys.

Scalable Multi-Zone Isolation

A single fire system can be wired to multiple EGVSO-75 valves, enabling the simultaneous shut-off of separate gas manifolds across a large facility. This level of automated fuel control is not achievable with mechanical valves. In many jurisdictions the solenoid valve is also used as a secondary shut-off alongside a primary mechanical valve, creating a redundant double-block safety layer required for high-occupancy buildings.

BTU Consistency

The internal valve geometry is precision-machined to minimize pressure drop across the orifice, ensuring that appliances receive consistent BTU delivery at peak demand without the flow restriction common in lower-grade isolation hardware.

Semi-Annual Functional Testing

During every 6-month inspection, actuate the fire suppression system and verify the EGVSO-75 closes immediately. A delay of even a few seconds indicates a failing solenoid coil or internal debris and requires immediate coil replacement per NFPA 17A and NFPA 96 requirements.

Upstream Debris Mitigation

Solenoid valves are sensitive to pipe scale and welding slag. Install a gas line strainer upstream of the 013707 before commissioning. A single grain of debris on the valve seat can prevent the plunger from creating a gas-tight seal, resulting in a leaking valve.

Voltage Drop Verification

During commissioning, verify that the 120 VAC supply is stable under load. Low voltage can cause the solenoid coil to chatter, leading to premature coil failure and intermittent gas supply to the appliance battery.

Zero-Reset Verification

After system reset, confirm the valve only opens once power is restored through the interlock. Verify that no manual override is engaged, as an active override would violate the valve's UL 429 compliant status.

Can the EGVSO-75 be used with Liquid Propane (LP) gas?

Yes. The material composition of the EGVSO-75 is compatible with both natural gas and liquid propane. Always verify that the gas line pressure does not exceed the 5.0 PSI operating limit before installation.

What happens if the solenoid coil burns out?

Because the valve is normally closed, a coil failure will result in the gas being shut off permanently. While this is an operational inconvenience, it is a deliberate fail-to-safe feature that prevents appliances from running without a functional fire-trip interface.

Does this valve require a manual reset tool?

No. Unlike mechanical valves, the Ansul 013707 resets automatically once power is restored through the electromagnetic interlock. This makes it particularly well-suited for installations where the valve is located in an inaccessible ceiling or overhead area.