Gas Valves

Gas valves control gas flow in compatible commercial heating equipment. HVAC technicians, facility maintenance teams, and heating-equipment professionals use them for service, replacement, and installation work on gas-fired furnaces, boilers, water heaters, rooftop heaters, and other heating appliances with direct ignition, standing pilot, intermittent pilot, or electronic ignition configurations.

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Helpful Buying Guide

Gas Valve Buying Guide

Select a gas valve by matching the control and ignition arrangement, electrical requirement, gas connections, opening action, and application details of the existing equipment. The available options include valves for direct ignition and pilot systems, diaphragm valves for final shutoff service, combination controls, and an ignition and valve control kit.

Visual Guide

Popular examples in this category

Dual Direct Ignition Gas Valve, 1/2 in. Inlet/OutletDual Direct Ignition Gas Valve, 1/2 in. Inlet/OutletWBB393976Dual Standing Pilot Gas Valve, 1/2 in. Inlet/OutletDual Standing Pilot Gas Valve, 1/2 in. Inlet/OutletWBB394632120 VAC Dual Intermittent Pilot Gas Valve with 3/4 in. Inlet/Outlet120 VAC Dual Intermittent Pilot Gas Valve with 3/4 in. Inlet/OutletWBB39406224V Step-Opening Dual Standing Pilot Gas Valve, 3/4 in. x 3/4 in.24V Step-Opening Dual Standing Pilot Gas Valve, 3/4 in. x 3/4 in.WBB393702
Use Cases

Match the heating equipment being serviced

Available gas controls support compatible gas-fired furnaces, boilers, commercial water heaters, rooftop heaters, and atmospheric heating appliances. Some options are intended for general HVAC gas-flow control, while normally closed diaphragm valves are used for final shutoff service in applicable equipment.

How to Choose

Start with the existing control requirements

Confirm whether the equipment uses direct ignition, standing pilot, intermittent pilot, direct spark, or hot surface ignition. Then match the required control voltage, inlet and outlet connection sizes, regulator setting where stated, and opening configuration.

Applications

Compare valve types by system function

Dual direct ignition valves fit compatible direct-ignition systems. Standing-pilot and intermittent-pilot valves match their respective pilot arrangements. Electronic combination controls can manage direct spark, hot surface, or intermittent pilot applications, while diaphragm valves provide normally closed gas-flow control.

Additional Information

Check gas type and access details

Certain controls support natural gas and LP gas, with some including an LP conversion kit or natural-to-LP converter kit. Service-oriented details represented include side tappings, top-access wiring and adjustments, a pilot outlet, and an internal inlet screen on one electronic combination control.

24 VACCommon control voltage

Represented across multiple direct ignition, pilot, diaphragm, combination-control, and kit options.

120 VACAdditional voltage option

Available on a dual intermittent pilot valve with 3/4 in. connections.

1/2 in. to 1 in.Connection sizes represented

Options include 1/2 in., 3/4 in., mixed 1/2 in. x 3/4 in., and 1 in. NPT connections.

3.5 in. WCListed regulator setting

Specified on several direct ignition and pilot valve options.

Comparison Guide

Compare Gas Valve Types

Use the existing appliance configuration to narrow the appropriate control type.

Product typeBest matched toKey selection details
Direct ignition and pilot valvesCompatible heating equipment using dual direct ignition, dual standing pilot, or dual intermittent pilot operationMatch 24 VAC or 120 VAC requirement, connection size, and slow-opening, standard-opening, or step-opening configuration.
Normally closed diaphragm valvesAtmospheric boilers, commercial water heaters, and rooftop heaters requiring final shutoff serviceAvailable for natural, LP, or manufactured gases; represented with 1 in. NPT connections and slow-opening/fast-closing operation.
Combination controls and control kitCompatible 24 VAC gas-fired appliances and atmospheric furnaces, boilers, and heating appliancesElectronic combination control supports direct spark, hot surface, and intermittent pilot ignition; the kit combines ignition-control and gas-valve components.
Planning Guide

Plan the right fit before choosing

1. Identify the ignition and control arrangement

Choose a valve that corresponds to the appliance design

The category includes several ignition-specific options. A direct ignition valve should be selected for compatible dual direct ignition equipment. Separate models support dual standing pilot or dual intermittent pilot systems. An electronic combination gas control supports direct spark, hot surface, and intermittent pilot ignition configurations.

  • Dual direct ignition options are available in 24 VAC configurations.
  • Standing-pilot options include 24 VAC valves and a step-opening combination gas control.
  • Dual intermittent-pilot valves include slow-opening models, with one option specified for 120 VAC operation.
  • A gas ignition and valve control kit combines ignition-control, valve, flange, and LP-conversion components for compatible 24 VAC atmospheric appliances.
2. Match electrical and connection requirements

Verify voltage and inlet/outlet sizing before selection

Available valves are specified for either 24 VAC or 120 VAC operation. Connection formats represented include matched 1/2 in., matched 3/4 in., 1/2 in. x 3/4 in., and 1 in. NPT. Several ignition-focused valves list a 3.5 in. WC regulator setting.

  • 24 VAC is represented across direct ignition, standing pilot, intermittent pilot, diaphragm, combination-control, and kit options.
  • A 120 VAC dual intermittent pilot valve is available with 3/4 in. inlet and outlet connections.
  • Match 1/2 in., 3/4 in., mixed 1/2 in. x 3/4 in., or 1 in. NPT connections to the compatible gas line and equipment.
  • Confirm the stated 3.5 in. WC regulator setting when it is required by the application.
3. Consider opening action, shutoff function, and service access

Compare operating characteristics needed for the job

Slow-opening, standard-opening, and step-opening valve configurations are represented. Normally closed diaphragm valves close when power is lost and are described for final shutoff service. Certain combination controls add manual shutoff, pressure regulation, pilot adjustment, or accessible service points.

  • Slow-opening options provide gradual or controlled opening action.
  • A standard-opening 24 VAC dual direct ignition valve is available.
  • The step-opening standing-pilot control opens its first automatic valve on a thermostat call for heat and closes it when the call ends.
  • One normally closed diaphragm valve closes firmly in two seconds maximum; diaphragm valve opening time can be set with compatible bleed-orifice options or an adjustable bleed valve.
FAQ

Common questions before buying

What ignition types are represented in this category?

The selection includes dual direct ignition, standing pilot, dual intermittent pilot, direct spark, and hot surface ignition-related controls.

What voltages are available?

Most represented options are 24 VAC, and one dual intermittent pilot valve is specified for 120 VAC operation.

Which connection sizes are represented?

Available connection formats include 1/2 in., 3/4 in., 1/2 in. x 3/4 in., and 1 in. NPT.

Are options available for natural gas and LP gas?

Certain valves and controls support natural and LP gas. Some include an LP conversion kit or a natural-to-LP converter kit; diaphragm valves also support manufactured gas.

Helpful Buying Guide

Gas Valve Buying Guide

Select a gas valve by matching the control and ignition arrangement, electrical requirement, gas connections, opening action, and application details of the existing equipment. The available options include valves for direct ignition and pilot systems, diaphragm valves for final shutoff service, combination controls, and an ignition and valve control kit.

Visual Guide

Popular examples in this category

Dual Direct Ignition Gas Valve, 1/2 in. Inlet/OutletDual Direct Ignition Gas Valve, 1/2 in. Inlet/OutletWBB393976Dual Standing Pilot Gas Valve, 1/2 in. Inlet/OutletDual Standing Pilot Gas Valve, 1/2 in. Inlet/OutletWBB394632120 VAC Dual Intermittent Pilot Gas Valve with 3/4 in. Inlet/Outlet120 VAC Dual Intermittent Pilot Gas Valve with 3/4 in. Inlet/OutletWBB39406224V Step-Opening Dual Standing Pilot Gas Valve, 3/4 in. x 3/4 in.24V Step-Opening Dual Standing Pilot Gas Valve, 3/4 in. x 3/4 in.WBB393702
Use Cases

Match the heating equipment being serviced

Available gas controls support compatible gas-fired furnaces, boilers, commercial water heaters, rooftop heaters, and atmospheric heating appliances. Some options are intended for general HVAC gas-flow control, while normally closed diaphragm valves are used for final shutoff service in applicable equipment.

How to Choose

Start with the existing control requirements

Confirm whether the equipment uses direct ignition, standing pilot, intermittent pilot, direct spark, or hot surface ignition. Then match the required control voltage, inlet and outlet connection sizes, regulator setting where stated, and opening configuration.

Applications

Compare valve types by system function

Dual direct ignition valves fit compatible direct-ignition systems. Standing-pilot and intermittent-pilot valves match their respective pilot arrangements. Electronic combination controls can manage direct spark, hot surface, or intermittent pilot applications, while diaphragm valves provide normally closed gas-flow control.

Additional Information

Check gas type and access details

Certain controls support natural gas and LP gas, with some including an LP conversion kit or natural-to-LP converter kit. Service-oriented details represented include side tappings, top-access wiring and adjustments, a pilot outlet, and an internal inlet screen on one electronic combination control.

24 VACCommon control voltage

Represented across multiple direct ignition, pilot, diaphragm, combination-control, and kit options.

120 VACAdditional voltage option

Available on a dual intermittent pilot valve with 3/4 in. connections.

1/2 in. to 1 in.Connection sizes represented

Options include 1/2 in., 3/4 in., mixed 1/2 in. x 3/4 in., and 1 in. NPT connections.

3.5 in. WCListed regulator setting

Specified on several direct ignition and pilot valve options.

Comparison Guide

Compare Gas Valve Types

Use the existing appliance configuration to narrow the appropriate control type.

Product typeBest matched toKey selection details
Direct ignition and pilot valvesCompatible heating equipment using dual direct ignition, dual standing pilot, or dual intermittent pilot operationMatch 24 VAC or 120 VAC requirement, connection size, and slow-opening, standard-opening, or step-opening configuration.
Normally closed diaphragm valvesAtmospheric boilers, commercial water heaters, and rooftop heaters requiring final shutoff serviceAvailable for natural, LP, or manufactured gases; represented with 1 in. NPT connections and slow-opening/fast-closing operation.
Combination controls and control kitCompatible 24 VAC gas-fired appliances and atmospheric furnaces, boilers, and heating appliancesElectronic combination control supports direct spark, hot surface, and intermittent pilot ignition; the kit combines ignition-control and gas-valve components.
Planning Guide

Plan the right fit before choosing

1. Identify the ignition and control arrangement

Choose a valve that corresponds to the appliance design

The category includes several ignition-specific options. A direct ignition valve should be selected for compatible dual direct ignition equipment. Separate models support dual standing pilot or dual intermittent pilot systems. An electronic combination gas control supports direct spark, hot surface, and intermittent pilot ignition configurations.

  • Dual direct ignition options are available in 24 VAC configurations.
  • Standing-pilot options include 24 VAC valves and a step-opening combination gas control.
  • Dual intermittent-pilot valves include slow-opening models, with one option specified for 120 VAC operation.
  • A gas ignition and valve control kit combines ignition-control, valve, flange, and LP-conversion components for compatible 24 VAC atmospheric appliances.
2. Match electrical and connection requirements

Verify voltage and inlet/outlet sizing before selection

Available valves are specified for either 24 VAC or 120 VAC operation. Connection formats represented include matched 1/2 in., matched 3/4 in., 1/2 in. x 3/4 in., and 1 in. NPT. Several ignition-focused valves list a 3.5 in. WC regulator setting.

  • 24 VAC is represented across direct ignition, standing pilot, intermittent pilot, diaphragm, combination-control, and kit options.
  • A 120 VAC dual intermittent pilot valve is available with 3/4 in. inlet and outlet connections.
  • Match 1/2 in., 3/4 in., mixed 1/2 in. x 3/4 in., or 1 in. NPT connections to the compatible gas line and equipment.
  • Confirm the stated 3.5 in. WC regulator setting when it is required by the application.
3. Consider opening action, shutoff function, and service access

Compare operating characteristics needed for the job

Slow-opening, standard-opening, and step-opening valve configurations are represented. Normally closed diaphragm valves close when power is lost and are described for final shutoff service. Certain combination controls add manual shutoff, pressure regulation, pilot adjustment, or accessible service points.

  • Slow-opening options provide gradual or controlled opening action.
  • A standard-opening 24 VAC dual direct ignition valve is available.
  • The step-opening standing-pilot control opens its first automatic valve on a thermostat call for heat and closes it when the call ends.
  • One normally closed diaphragm valve closes firmly in two seconds maximum; diaphragm valve opening time can be set with compatible bleed-orifice options or an adjustable bleed valve.
FAQ

Common questions before buying

What ignition types are represented in this category?

The selection includes dual direct ignition, standing pilot, dual intermittent pilot, direct spark, and hot surface ignition-related controls.

What voltages are available?

Most represented options are 24 VAC, and one dual intermittent pilot valve is specified for 120 VAC operation.

Which connection sizes are represented?

Available connection formats include 1/2 in., 3/4 in., 1/2 in. x 3/4 in., and 1 in. NPT.

Are options available for natural gas and LP gas?

Certain valves and controls support natural and LP gas. Some include an LP conversion kit or a natural-to-LP converter kit; diaphragm valves also support manufactured gas.

Helpful Buying Guide

Gas Valve Buying Guide

Select a gas valve by matching the control and ignition arrangement, electrical requirement, gas connections, opening action, and application details of the existing equipment. The available options include valves for direct ignition and pilot systems, diaphragm valves for final shutoff service, combination controls, and an ignition and valve control kit.

Visual Guide

Popular examples in this category

Dual Direct Ignition Gas Valve, 1/2 in. Inlet/OutletDual Direct Ignition Gas Valve, 1/2 in. Inlet/OutletWBB393976Dual Standing Pilot Gas Valve, 1/2 in. Inlet/OutletDual Standing Pilot Gas Valve, 1/2 in. Inlet/OutletWBB394632120 VAC Dual Intermittent Pilot Gas Valve with 3/4 in. Inlet/Outlet120 VAC Dual Intermittent Pilot Gas Valve with 3/4 in. Inlet/OutletWBB39406224V Step-Opening Dual Standing Pilot Gas Valve, 3/4 in. x 3/4 in.24V Step-Opening Dual Standing Pilot Gas Valve, 3/4 in. x 3/4 in.WBB393702
Use Cases

Match the heating equipment being serviced

Available gas controls support compatible gas-fired furnaces, boilers, commercial water heaters, rooftop heaters, and atmospheric heating appliances. Some options are intended for general HVAC gas-flow control, while normally closed diaphragm valves are used for final shutoff service in applicable equipment.

How to Choose

Start with the existing control requirements

Confirm whether the equipment uses direct ignition, standing pilot, intermittent pilot, direct spark, or hot surface ignition. Then match the required control voltage, inlet and outlet connection sizes, regulator setting where stated, and opening configuration.

Applications

Compare valve types by system function

Dual direct ignition valves fit compatible direct-ignition systems. Standing-pilot and intermittent-pilot valves match their respective pilot arrangements. Electronic combination controls can manage direct spark, hot surface, or intermittent pilot applications, while diaphragm valves provide normally closed gas-flow control.

Additional Information

Check gas type and access details

Certain controls support natural gas and LP gas, with some including an LP conversion kit or natural-to-LP converter kit. Service-oriented details represented include side tappings, top-access wiring and adjustments, a pilot outlet, and an internal inlet screen on one electronic combination control.

24 VACCommon control voltage

Represented across multiple direct ignition, pilot, diaphragm, combination-control, and kit options.

120 VACAdditional voltage option

Available on a dual intermittent pilot valve with 3/4 in. connections.

1/2 in. to 1 in.Connection sizes represented

Options include 1/2 in., 3/4 in., mixed 1/2 in. x 3/4 in., and 1 in. NPT connections.

3.5 in. WCListed regulator setting

Specified on several direct ignition and pilot valve options.

Comparison Guide

Compare Gas Valve Types

Use the existing appliance configuration to narrow the appropriate control type.

Product typeBest matched toKey selection details
Direct ignition and pilot valvesCompatible heating equipment using dual direct ignition, dual standing pilot, or dual intermittent pilot operationMatch 24 VAC or 120 VAC requirement, connection size, and slow-opening, standard-opening, or step-opening configuration.
Normally closed diaphragm valvesAtmospheric boilers, commercial water heaters, and rooftop heaters requiring final shutoff serviceAvailable for natural, LP, or manufactured gases; represented with 1 in. NPT connections and slow-opening/fast-closing operation.
Combination controls and control kitCompatible 24 VAC gas-fired appliances and atmospheric furnaces, boilers, and heating appliancesElectronic combination control supports direct spark, hot surface, and intermittent pilot ignition; the kit combines ignition-control and gas-valve components.
Planning Guide

Plan the right fit before choosing

1. Identify the ignition and control arrangement

Choose a valve that corresponds to the appliance design

The category includes several ignition-specific options. A direct ignition valve should be selected for compatible dual direct ignition equipment. Separate models support dual standing pilot or dual intermittent pilot systems. An electronic combination gas control supports direct spark, hot surface, and intermittent pilot ignition configurations.

  • Dual direct ignition options are available in 24 VAC configurations.
  • Standing-pilot options include 24 VAC valves and a step-opening combination gas control.
  • Dual intermittent-pilot valves include slow-opening models, with one option specified for 120 VAC operation.
  • A gas ignition and valve control kit combines ignition-control, valve, flange, and LP-conversion components for compatible 24 VAC atmospheric appliances.
2. Match electrical and connection requirements

Verify voltage and inlet/outlet sizing before selection

Available valves are specified for either 24 VAC or 120 VAC operation. Connection formats represented include matched 1/2 in., matched 3/4 in., 1/2 in. x 3/4 in., and 1 in. NPT. Several ignition-focused valves list a 3.5 in. WC regulator setting.

  • 24 VAC is represented across direct ignition, standing pilot, intermittent pilot, diaphragm, combination-control, and kit options.
  • A 120 VAC dual intermittent pilot valve is available with 3/4 in. inlet and outlet connections.
  • Match 1/2 in., 3/4 in., mixed 1/2 in. x 3/4 in., or 1 in. NPT connections to the compatible gas line and equipment.
  • Confirm the stated 3.5 in. WC regulator setting when it is required by the application.
3. Consider opening action, shutoff function, and service access

Compare operating characteristics needed for the job

Slow-opening, standard-opening, and step-opening valve configurations are represented. Normally closed diaphragm valves close when power is lost and are described for final shutoff service. Certain combination controls add manual shutoff, pressure regulation, pilot adjustment, or accessible service points.

  • Slow-opening options provide gradual or controlled opening action.
  • A standard-opening 24 VAC dual direct ignition valve is available.
  • The step-opening standing-pilot control opens its first automatic valve on a thermostat call for heat and closes it when the call ends.
  • One normally closed diaphragm valve closes firmly in two seconds maximum; diaphragm valve opening time can be set with compatible bleed-orifice options or an adjustable bleed valve.
FAQ

Common questions before buying

What ignition types are represented in this category?

The selection includes dual direct ignition, standing pilot, dual intermittent pilot, direct spark, and hot surface ignition-related controls.

What voltages are available?

Most represented options are 24 VAC, and one dual intermittent pilot valve is specified for 120 VAC operation.

Which connection sizes are represented?

Available connection formats include 1/2 in., 3/4 in., 1/2 in. x 3/4 in., and 1 in. NPT.

Are options available for natural gas and LP gas?

Certain valves and controls support natural and LP gas. Some include an LP conversion kit or a natural-to-LP converter kit; diaphragm valves also support manufactured gas.

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