Robertshaw 720-403 Valve
The Robertshaw 720-403 is a versatile slow opening gas valve engineered for precision fuel control in residential and light commercial heating applications. This dual voltage gas valve operates on both 24V AC and 750mV systems, making it a critical stock item for technicians servicing standing pilot furnace units or millivolt boilers. With a 1/2" NPT inlet and 3/4" NPT outlet, the 720-403 offers a high-capacity flow rate of up to 150,000 BTU, while the included LP conversion kit ensures seamless field transition from natural gas to liquid propane. The slow-open feature reduces ignition noise and minimizes mechanical stress on the heat exchanger by providing a controlled ramp-up of gas pressure. Designed with a 90-degree straight-through body and multi-position mounting capabilities, this combination gas control simplifies retrofitting in tight mechanical closets while maintaining reliable thermocouple or thermopile drop-out safety standards.
- Universal Compatibility: Replaces multiple Robertshaw, Honeywell, and White-Rodgers models in 24V and millivolt systems.
- Field Convertible: Includes all necessary components for Natural Gas to LP conversion.
- Slow Opening Action: Delivers smoother ignition and quieter burner operation.
- High Capacity Output: Rated for up to 150,000 BTU to support larger residential furnaces.
- Flexible Installation: Features a compact footprint and allows for multi-position gas valve mounting.
Common Questions
Can this valve be used with a 750mV thermopile system?
Yes, the Robertshaw 720-403 is designed for millivolt heating systems as well as standard 24V AC circuits, providing versatility for various older and modern service calls.
Does the 720-403 require specific orientation?
This HVAC replacement valve can be mounted in any position except upside down, allowing for easier integration into non-standard manifold configurations.
What is the benefit of the slow-opening feature?
The slow-opening mechanism delays full gas pressure for several seconds after the initial coil energization, preventing "delayed ignition" bangs and reducing stress on the furnace's combustion chamber.
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.
Robertshaw 720-403 Valve
The Robertshaw 720-403 is a versatile slow opening gas valve engineered for precision fuel control in residential and light commercial heating applications. This dual voltage gas valve operates on both 24V AC and 750mV systems, making it a critical stock item for technicians servicing standing pilot furnace units or millivolt boilers. With a 1/2" NPT inlet and 3/4" NPT outlet, the 720-403 offers a high-capacity flow rate of up to 150,000 BTU, while the included LP conversion kit ensures seamless field transition from natural gas to liquid propane. The slow-open feature reduces ignition noise and minimizes mechanical stress on the heat exchanger by providing a controlled ramp-up of gas pressure. Designed with a 90-degree straight-through body and multi-position mounting capabilities, this combination gas control simplifies retrofitting in tight mechanical closets while maintaining reliable thermocouple or thermopile drop-out safety standards.
- Universal Compatibility: Replaces multiple Robertshaw, Honeywell, and White-Rodgers models in 24V and millivolt systems.
- Field Convertible: Includes all necessary components for Natural Gas to LP conversion.
- Slow Opening Action: Delivers smoother ignition and quieter burner operation.
- High Capacity Output: Rated for up to 150,000 BTU to support larger residential furnaces.
- Flexible Installation: Features a compact footprint and allows for multi-position gas valve mounting.
Common Questions
Can this valve be used with a 750mV thermopile system?
Yes, the Robertshaw 720-403 is designed for millivolt heating systems as well as standard 24V AC circuits, providing versatility for various older and modern service calls.
Does the 720-403 require specific orientation?
This HVAC replacement valve can be mounted in any position except upside down, allowing for easier integration into non-standard manifold configurations.
What is the benefit of the slow-opening feature?
The slow-opening mechanism delays full gas pressure for several seconds after the initial coil energization, preventing "delayed ignition" bangs and reducing stress on the furnace's combustion chamber.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Robertshaw 720-403 is a versatile slow opening gas valve engineered for precision fuel control in residential and light commercial heating applications. This dual voltage gas valve operates on both 24V AC and 750mV systems, making it a critical stock item for technicians servicing standing pilot furnace units or millivolt boilers. With a 1/2" NPT inlet and 3/4" NPT outlet, the 720-403 offers a high-capacity flow rate of up to 150,000 BTU, while the included LP conversion kit ensures seamless field transition from natural gas to liquid propane. The slow-open feature reduces ignition noise and minimizes mechanical stress on the heat exchanger by providing a controlled ramp-up of gas pressure. Designed with a 90-degree straight-through body and multi-position mounting capabilities, this combination gas control simplifies retrofitting in tight mechanical closets while maintaining reliable thermocouple or thermopile drop-out safety standards.
- Universal Compatibility: Replaces multiple Robertshaw, Honeywell, and White-Rodgers models in 24V and millivolt systems.
- Field Convertible: Includes all necessary components for Natural Gas to LP conversion.
- Slow Opening Action: Delivers smoother ignition and quieter burner operation.
- High Capacity Output: Rated for up to 150,000 BTU to support larger residential furnaces.
- Flexible Installation: Features a compact footprint and allows for multi-position gas valve mounting.
Common Questions
Can this valve be used with a 750mV thermopile system?
Yes, the Robertshaw 720-403 is designed for millivolt heating systems as well as standard 24V AC circuits, providing versatility for various older and modern service calls.
Does the 720-403 require specific orientation?
This HVAC replacement valve can be mounted in any position except upside down, allowing for easier integration into non-standard manifold configurations.
What is the benefit of the slow-opening feature?
The slow-opening mechanism delays full gas pressure for several seconds after the initial coil energization, preventing "delayed ignition" bangs and reducing stress on the furnace's combustion chamber.
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.
