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HVAC

The HVAC brand covers a line of control ball valves intended for hydronic and steam-based heating, ventilation, and air-conditioning systems. The products shown here are two-way flanged connection ball valves supplied without actuators, so they can be paired with electric or pneumatic actuators selected for the specific torque and control signal requirements of a given installation. Each valve uses a stainless steel ball and a brass body, a combination that provides corrosion resistance at the sealing surface while keeping the pressure-containing body compatible with common HVAC media. The valves are rated for a 100 psi close-off pressure, which defines the maximum differential pressure the valve can seal against when driven by an actuator of sufficient torque. Flow capacities range from 74 CV to 289 CV across the listed models, with flanged connection sizes from 2 1/2 inches to 5 inches. Media compatibility includes water, water-glycol solutions up to 50 percent concentration, and steam, depending on the model. These valves are used for on/off or modulating control in commercial HVAC systems, including air-handling units, fan coil units, and central plant distribution loops. The flanged connection style allows for secure, serviceable joints in larger pipe sizes where threaded or sweat connections may not be practical. Because the valves are supplied without actuators, specifiers can match the actuator to the control signal, fail position, and torque needed for the application. 3G Electric supplies this HVAC line as part of its industrial equipment catalog, serving plant engineers, maintenance managers, and procurement specialists who need to specify or replace control valves in building mechanical systems. The catalog includes multiple CV ratings and connection sizes within the same valve family, which simplifies selection when balancing flow across circuits or matching existing piping. Technical documentation for each SKU includes flow coefficient, close-off rating, media compatibility, and connection dimensions, allowing buyers to verify fit and performance before ordering. 3G Electric ships globally and provides access to these HVAC control ball valves alongside related pumps, gas controls, and burner components.

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About HVAC

The HVAC brand covers a line of control ball valves intended for hydronic and steam-based heating, ventilation, and air-conditioning systems. The products shown here are two-way flanged connection ball valves supplied without actuators, so they can be paired with electric or pneumatic actuators selected for the specific torque and control signal requirements of a given installation. Each valve uses a stainless steel ball and a brass body, a combination that provides corrosion resistance at the sealing surface while keeping the pressure-containing body compatible with common HVAC media. The valves are rated for a 100 psi close-off pressure, which defines the maximum differential pressure the valve can seal against when driven by an actuator of sufficient torque. Flow capacities range from 74 CV to 289 CV across the listed models, with flanged connection sizes from 2 1/2 inches to 5 inches. Media compatibility includes water, water-glycol solutions up to 50 percent concentration, and steam, depending on the model. These valves are used for on/off or modulating control in commercial HVAC systems, including air-handling units, fan coil units, and central plant distribution loops. The flanged connection style allows for secure, serviceable joints in larger pipe sizes where threaded or sweat connections may not be practical. Because the valves are supplied without actuators, specifiers can match the actuator to the control signal, fail position, and torque needed for the application. 3G Electric supplies this HVAC line as part of its industrial equipment catalog, serving plant engineers, maintenance managers, and procurement specialists who need to specify or replace control valves in building mechanical systems. The catalog includes multiple CV ratings and connection sizes within the same valve family, which simplifies selection when balancing flow across circuits or matching existing piping. Technical documentation for each SKU includes flow coefficient, close-off rating, media compatibility, and connection dimensions, allowing buyers to verify fit and performance before ordering. 3G Electric ships globally and provides access to these HVAC control ball valves alongside related pumps, gas controls, and burner components.

Common Applications

  • Commercial HVAC — 2-way flanged ball valve (SKU 41P756) for water-glycol control in hydronic loops
  • Steam distribution — 2-way flanged ball valve (SKU 41P758) for steam media in heating systems
  • Air-handling units — 2-way flanged ball valve (SKU 53WM95) for water flow modulation in large AHUs
  • Central plant — 2-way flanged ball valve (SKU 53WM96) for high-flow water-glycol service
  • Fan coil units — 2-way flanged ball valve (SKU 41P754) for water-glycol control in terminal units
  • Building retrofits — 2-way flanged ball valve (SKU 53WM94) for water-glycol service in existing piping

Frequently asked questions

Common questions about HVAC from 3G Electric.

What media can HVAC 2-way flanged ball valves handle?

HVAC 2-way flanged ball valves are available in models rated for water, water-glycol solutions up to 50 percent concentration, and steam. The specific media compatibility depends on the model. For example, SKU 41P756 and SKU 53WM96 are intended for water-glycol solutions to 50 percent, while SKU 41P758 and SKU 53WM92 are rated for steam service. Always confirm the media rating for the exact SKU before installation, as seals and internal materials may differ between models.

What does the CV flow rating mean on an HVAC control ball valve?

CV is the flow coefficient: the volume of water in US gallons per minute that will pass through the valve at a pressure drop of 1 psi. Higher CV values indicate greater flow capacity for a given valve size. In the HVAC line, CV ratings range from 74 for smaller flanged valves up to 289 for the 5-inch model. Selecting the correct CV is part of sizing the valve for the required flow and pressure drop in the system. The CV value is listed for each SKU in the product specifications.

Are HVAC flanged ball valves supplied with actuators?

The HVAC control ball valves listed here are supplied without actuators. This allows the actuator to be selected separately based on the required torque, control signal (on/off, floating, or modulating), and fail position. The valve itself is rated for 100 psi close-off, which is the differential pressure the valve can seal against when paired with an actuator of adequate torque. Matching the actuator to the valve and the application is necessary for proper operation.

What connection sizes are available in the HVAC 2-way flanged ball valve line?

The HVAC 2-way flanged ball valve line includes connection sizes of 2 1/2 inches, 3 inches, 4 inches, and 5 inches. Flow coefficients vary by size and model, with CV values from 74 to 289. For example, the 3-inch models include CV ratings of 74, 116, 176, 208, and 211, depending on the specific SKU. The flanged connection provides a bolted joint that can be disassembled for service or replacement without cutting into the piping.

What is the close-off rating for HVAC control ball valves?

The HVAC control ball valves shown here have a close-off rating of 100 psi. Close-off rating is the maximum differential pressure against which the valve can seal when closed by the actuator. It is a key specification for selecting an actuator with sufficient torque. If system differential pressure exceeds the close-off rating, the valve may not seal fully, leading to leakage. Verify that the 100 psi rating meets the requirements of the specific circuit before installation.

Does 3G Electric supply HVAC products?

Yes — 3G Electric (S) Pte. Ltd. supplies HVAC products. We stock the HVAC catalog and supply genuine factory-original products with full manufacturer warranty and technical support.