Return Water Valve for Four-Pipe Hydronic Systems, Three-Way 90 Degree Elbow, 6 to 9 PSIG Spring, 4.1 Cv NC Valve and 4.7 Cv NO Valve, 5/8 Inch Size, Pro Grade Pneumatic Actuator for Precise Heat Transfer Control

Precision four-pipe return valve with pneumatic actuator ✔️ 5/8 in size, 6-9 PSIG spring, 4.1 Cv NC & 4.7 Cv NO - single unit

This return water valve is built for four-pipe hydronic systems and three-way 90° elbows, regulating hot and cold water in small room HVAC setups. It ships with a factory-installed V-3000 exposed pneumatic actuator in a die-cast aluminum housing and supports 1/2 and 5/8 in. connections in the V-4440 Series for three- and four-pipe layouts.

✅ 5/8 in connection size for standard hydronic fittings
✅ 6-9 PSIG spring for stable modulation
✅ Cv 4.1 NC and 4.7 NO for precise flow control
✅ Three-way 90-degree elbow compatibility
✅ Factory-installed V-3000 actuator for accurate control
✅ Die-cast aluminum housing with synthetic rubber diaphragm
✅ V-4440 Series support for 1/2 and 5/8 in connections

💡 What is a return water valve used for in four-pipe heating and cooling systems?

Handy, precise control for balancing heat transfer in HVAC loops.

- Helps regulate hot and cold water flow in three- and four-pipe setups
- Operated by a factory-installed V-3000 pneumatic actuator for responsive control
- Cv values 4.1 NC and 4.7 NO enable precise modulation
- Ideal for small-room climate control applications
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