HVAC Valves & Pumps

HVAC Valves and Pumps for Heating and Cooling Systems

HVAC valves and pumps control the movement of natural gas, propane, refrigerant, water, and condensate throughout heating and cooling equipment. These components perform different functions depending on the system, from regulating fuel delivery to a furnace burner to circulating hot water through a boiler or removing condensate from an air conditioner.

Furnace Part Source carries a range of HVAC replacement valves, pumps, and related control components for residential, commercial, and industrial equipment. Our catalog includes furnace gas valves, HVAC solenoid valves, ball valves, check valves, globe valves, valve actuators, gas regulators, zone valves, circulator pumps, condensate pumps, and specialized valve assemblies. Search by manufacturer, part number, or component type to find a replacement that matches your equipment.

Common HVAC Valves and Pump Parts We Carry

Different HVAC systems require specific valves and pumps to manage fuel, refrigerant, water circulation, and automatic control. Common replacement components include:

• Furnace and HVAC gas valves for controlling natural gas or propane delivery to burners in compatible furnaces, boilers, and heating equipment.
• Solenoid valves for electrically controlled opening and closing of gas, refrigerant, water, or other approved fluids.
• Ball valves and check valves for flow isolation and preventing reverse flow in compatible piping and refrigeration applications.
• Globe valves and control valves for regulating fluid flow in heating, cooling, and building automation systems.
• Zone valves and valve actuators for controlling water flow to individual heating or cooling zones in hydronic systems.
• Gas pressure regulators for maintaining the required downstream gas pressure within the manufacturer's specified operating range.
• Circulator pumps for moving water through boilers, radiators, baseboard heaters, radiant floor loops, and other hydronic systems.
• Condensate pumps for removing collected condensation from high-efficiency furnaces, air handlers, air conditioners, and other compatible equipment.
• Valve bodies, replacement coils, and actuator components for servicing compatible valve assemblies without replacing unrelated system components.

Furnace Gas Valves and HVAC Gas Control Valves

A furnace gas valve controls the supply of fuel to the burner during the heating cycle. Depending on the equipment, the valve may work with an ignition control board, pilot system, flame safety circuit, or other combustion controls. Gas valves are used in residential furnaces, commercial heating equipment, boilers, water heaters, and industrial burner applications.

When selecting a replacement gas valve, compare the original manufacturer part number, natural gas or propane application, inlet and outlet pressure requirements, voltage, connection size, ignition system, and control configuration. Some equipment uses single-stage valves, while other systems require two-stage, modulating, or specialized gas control valves.

A furnace that fails to ignite, shuts down during startup, or does not receive the correct gas supply may have a gas valve problem. However, similar symptoms can result from ignition controls, pressure switches, wiring, flame sensors, or other safety components. Gas valve diagnosis and replacement should be handled by a qualified HVAC professional.

HVAC Solenoid Valves and Automatic Flow Controls

HVAC solenoid valves use an electrically operated coil to control the opening or closing of a valve. Depending on the valve design and its approved application, solenoid valves may control refrigerant, water, fuel gas, or other fluids in heating, cooling, and process equipment.

Common configurations include normally closed, normally open, two-way, and three-way solenoid valves. Before ordering, confirm the original part number, coil voltage, valve port size, pressure range, flow requirements, operating medium, and valve configuration.

For example, an ASCO solenoid valve designed for a specific gas shutoff application should not be replaced with a valve intended only for water or refrigerant service. The replacement must be rated for the intended medium and equipment operating conditions.

Zone Valves, Globe Valves, and Hydronic Heating Controls

Zone valves regulate water flow through individual areas of a hydronic heating or cooling system. In systems with multiple thermostats or heating zones, a zone valve opens or closes to direct water through the appropriate piping loop, radiator, baseboard heater, or radiant floor circuit.

Globe valves and motorized control valves are also used in HVAC equipment to regulate water or other approved fluid flow. Some valves use electric or pneumatic actuators that respond to temperature controls, building automation systems, or equipment operating signals.

When replacing a zone valve, globe valve, or actuator, check the valve body size, connection type, voltage, actuator model, control signal, flow coefficient, and operating pressure. If only the actuator or power head has failed, a compatible replacement component may be available separately from the valve body.

Circulator Pumps and Condensate Pumps

HVAC pumps perform different functions depending on the equipment and application. Two common types are circulator pumps and condensate pumps.

Circulator pumps move water through a hydronic heating or cooling circuit. They are commonly used with boilers, radiant floor heating, radiators, baseboard heating systems, and commercial water circulation equipment. Replacement selection depends on flow rate, pump head, horsepower, voltage, pipe connections, and system requirements.

Condensate pumps remove water collected during normal cooling operation or from compatible high-efficiency heating equipment. They are often used when gravity drainage is not practical, such as in certain basement, attic, or mechanical-room installations. Replacement considerations include voltage, pumping capacity, maximum lift, reservoir design, discharge connections, and installation space.

A circulator pump cannot be substituted for a condensate pump because the two products are designed for different applications. Always match the replacement pump to the original equipment and operating requirements.

How to Choose the Right HVAC Valve or Pump Replacement

The best way to find a replacement HVAC valve or pump is to start with the manufacturer part number on the existing component. Valves and pumps can vary significantly in their operating specifications, even when they look similar or are manufactured by the same company.

Before ordering, compare:

• Original manufacturer or OEM part number
• Replacement or superseded part number
• Equipment brand, model number, and serial number
• Component type and intended application
• Natural gas, propane, refrigerant, water, or other approved operating medium
• Voltage, electrical connections, and control signal
• Inlet and outlet connection sizes
• Operating pressure range and temperature limits
• Flow capacity, Cv rating, or GPM rating when applicable
• Pump head rating, horsepower, mounting style, and discharge requirements
• Normally open, normally closed, modulating, or other valve operating configuration

If the original part has been discontinued, check manufacturer documentation for an approved replacement or cross-reference. A matching connection size or similar appearance does not confirm compatibility. This is especially important for gas valves, fuel shutoff controls, high-pressure valves, and electrical actuators.

Replacement Valves and Pumps by Manufacturer

Furnace Part Source carries HVAC valves and pump-related products from a range of equipment and component manufacturers. Available listings include products from Danfoss, York, Bradford White, ASCO, Siemens Building Technologies, Belimo, Maxitrol, Johnson Controls, Parker Fluid Control, Copeland Comfort Control, Weil-McLain, and other manufacturers.

These brands manufacture different types of valves, actuators, regulators, controls, and pump components for specific equipment applications. Not every manufacturer offers interchangeable parts, and similar products may have different operating ratings.

Check each product listing for its part number, specifications, current price, availability, and shipping options. For OEM or replacement components, verify that the listed part is suitable for the equipment being repaired.

When Should an HVAC Valve or Pump Be Replaced?

An HVAC valve or pump may need service when it no longer controls flow correctly, develops a leak, fails to respond to a control signal, produces unusual operating noise, or cannot maintain the required system performance. Symptoms depend on the component and the equipment in which it is installed.

Possible warning signs include:

• A furnace that fails to ignite or complete its heating cycle.
• A solenoid valve that does not respond to the correct electrical signal.
• Uneven heating in a hydronic system caused by inadequate circulation or a valve that fails to open.
• A zone that continues heating when its zone valve should be closed.
• Unusual noise, leakage, or reduced flow from a circulator pump.
• Condensate collecting around equipment because the drainage system is not removing water.
• A valve actuator that does not move the valve through its required operating range.

These symptoms may also result from electrical problems, blocked piping, faulty sensors, control board issues, or other equipment failures. Confirm the cause before replacing a component. Gas piping, refrigerant circuits, and safety-related controls should be serviced by appropriately qualified technicians.

Need Help Finding the Right HVAC Valve or Pump?

Not sure which HVAC valve, furnace gas valve, solenoid valve, zone valve, circulator pump, or condensate pump you need? Start with the manufacturer's part number and the equipment model number. Check the existing component label for voltage, pressure ratings, connection size, and other operating specifications.

You can also contact Furnace Part Source for help identifying a replacement. Providing photos of the existing part label, equipment data plate, and any manufacturer cross-reference information can help narrow the search and reduce the chance of ordering an incompatible component.

HVAC Valves and Pumps FAQs