Robertshaw 1720-004 Valve Assembly

The Robertshaw 1720-004 is a professional-grade thermomagnetic safety valve assembly designed for critical gas flow control in commercial and residential heating equipment. This 1720 series safety valve (TS11J model) features a 7/16-inch tube inlet and outlet and includes a high-performance valve magnet assembly. Engineered to prevent hazardous gas accumulation, the magnet is energized by millivoltage from a thermocouple; if the pilot flame fails, the magnetic force drops, and an internal spring snap-shuts both the main and pilot gas lines. This TS11J-3211-1-0 replacement is built for high-ambient environments, rated for temperatures up to 300°F (149°C). It serves as a direct drop-in for Robertshaw gas safety valves in vulcan ovens, commercial griddles, infrared heaters, and recreational vehicle appliances. Recognized by industry cross-references including 105569-2 and 511120001, this assembly ensures precise gas flow interruption with a 1/4-inch pilot connection, maintaining system integrity under demanding line pressures up to 0.5 PSI.

• Fail-Safe Protection: Reliable thermomagnetic safety mechanism automatically cuts off gas supply during pilot outages to prevent leaks.
• Universal Compatibility: Direct replacement for several OEM parts including Vulcan 105569-2, Garland 511120001, and Hobart 348852-1.
• High-Temperature Durability: Rated for ambient operation up to 300°F, ideal for tight commercial kitchen equipment footprints.
• Standardized Connections: 7/16" tube body and 1/4" pilot ports allow for seamless integration with existing gas manifolds and thermocouple sensors.
• Versatile Application: Suitable for a wide range of propane or natural gas appliances, from industrial brooders to RV heating systems.

Is the Robertshaw 1720-004 compatible with all TS11J applications?
While the 1720-004 uses the TS11J safety valve body, you must confirm that your specific manifold uses 7/16" tube fittings. Other models in this series may utilize 1/4" or 3/8" pipe threads.

How do I troubleshoot a valve that won't stay open?
If the valve magnet fails to hold, first inspect the thermocouple output. The magnet requires a specific millivolt signal from the flame sensor to overcome the internal spring pressure and keep the gas flow active.

What is the maximum pressure rating for this assembly?
This Robertshaw gas valve is rated for a maximum inlet pressure of 0.5 PSI, which is standard for most low-pressure commercial cooking and heating equipment.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.