Johnson Controls V-3766-1003 Valve

The Johnson Controls V-3766-1003 Valve is a professional-grade 2-Way Pneumatic Flare Valve engineered for precise proportional control of hot and cold water in HVAC terminal units, such as fan coils and reheat coils. This Normally Open (Push-Down-to-Close) assembly features a 1/2" SAE 45° Flare connection, allowing for efficient installation and maintenance without the need for soldering. With a 3.2 Cv rating and an equal percentage flow characteristic, it ensures stable thermal regulation even under varying load conditions.

Constructed with a rugged bronze body and a stainless steel stem, the V-3766-1003 is built to handle static pressures up to 400 psig and fluid temperatures ranging from 35°F to 281°F. The V-3000 pneumatic actuator utilizes a 3-6 psi spring range, providing reliable air-to-spring operation. For control air integration, the unit includes a 1/8" NPT barbed fitting compatible with 5/32" or 1/4" OD polytubing, making it a standard choice for pneumatic temperature control systems.

Key Benefits

• Solderless Installation: 1/2" flare connections provide a secure, leak-proof mechanical joint that facilitates quick field swaps and maintenance.
• Precise Flow Modulation: The 3.2 Cv capacity and equal percentage plug design ensure accurate heat transfer across a wide range of valve openings.
• High Pressure Performance: Rated for 400 psig static pressure, this valve is suitable for installation in high-rise mechanical systems.
• Standardized Packaging: Features the Johnson Controls non-adjustable Ring Pack packing for long-term stem seal reliability and minimal friction.
• Direct Actuator Interface: Pre-configured for pneumatic operation with a 5/16" stroke and integrated barbed fitting for seamless polytubing connection.

Common Questions

What is the default state of the V-3766-1003?
This is a Normally Open (N.O.) valve, also referred to as Push-Down-to-Close (PDTC). It remains open in its fail-safe state and requires pneumatic pressure to close.

Can this valve be used for steam applications?
No, the V-3766 series is specifically rated for hot and cold water service. It is not designed for the temperatures or pressures associated with steam systems.

What size tubing is required for the pneumatic signal?
The included 1/8" NPT barbed fitting is designed to accept either 5/32" or 1/4" OD polyethylene tubing.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.