Honeywell is a major global player in building technologies and industrial automation, and two-way valves are a core part of their product offerings, especially for HVAC (Heating, Ventilation, and Air Conditioning) systems. What is a Two-Way Valve? A two-way valve has two ports (an inlet and an outlet) and controls the flow of fluid (typically water, chilled water, hot water, or steam) directly. Unlike a three-way valve which can mix or divert flow, a two-way valve simply opens or closes to allow or stop flow, or modulates the flow rate between the two ports. Common Types of Honeywell Two-Way Valves: Honeywell offers various types of two-way valves, often paired with actuators for automated control: Motorized Ball Valves (e.g., VN Series, VBA Series): Description: These use a rotating ball with a bore to control flow. When the ball's bore aligns with the pipe, it's open; when perpendicular, it's closed. They are often electrically actuated. Features: Compact and quiet operation. Low power consumption. Good for on/off or modulating control. Available in brass or cast iron bodies. Often used in hydronic zone valve applications. Applications: Fan coil units, radiant floor heating, small-to-medium HVAC systems, zone control in commercial and residential buildings. Examples: Honeywell 2 Way Ball Control Valve VBA216F. Motorized Globe Valves (e.g., V5011 series, V58 Series): Description: Globe valves use a movable disk or plug that seats against a body, allowing for precise throttling and flow regulation. They are typically actuated by electric or pneumatic actuators. Features: Excellent for modulating control (precise flow regulation). Low seat leakage rate. Equal percentage or linear flow characteristics (depending on the plug design). Available in brass, bronze, or cast iron bodies. Designed for hot water, chilled water, glycol solutions, and sometimes low-pressure steam. Applications: Air handling units (AHUs), central plant applications, process control loops where precise temperature or flow control is required in HVAC systems. Examples: Honeywell V5011N: A popular 2-way threaded globe valve, typically brass body with NPT threads, used for water or glycol solutions. Honeywell V5011P: Similar to V5011N but often with BSPT threads (common in India) and red brass body. Honeywell V5011F/G/A/B: Flanged versions of 2-way globe valves, often in cast iron. Motorized Zone Valves (e.g., VC Series): Description: Compact, 2-position (on/off) or modulating valves primarily used for domestic and small commercial heating and cooling applications. They often have a simple cartridge assembly. Features: Silent operation, reducing water hammer. Minimal actuator power consumption. Actuator head is often removable without draining the system. Designed for on-off zone control of hot/cold water. Applications: Individual fan coil units, radiators, space heaters, domestic hot water systems. Examples: Honeywell VC6013 (often paired with an actuator for on/off control). Actuators for Honeywell Two-Way Valves: Honeywell two-way valves are almost always paired with actuators that control their operation. These can be: