Johnson Controls V-3966-1001 Valve

The Johnson Controls V-3966-1001 Valve is a professional-grade pneumatic control valve designed specifically for regulating water flow in compact HVAC terminal units, including fan coils and reheat coils. This 1/2-inch flare valve features a normally closed configuration and a 1.7 Cv flow coefficient, ensuring precise modulating control and an equal percentage flow characteristic for stable system performance. Built with a rugged brass body and a stainless steel stem, it is engineered to withstand a maximum operating pressure of 240 psi and fluid temperatures up to 281°F. The 9-13 psi spring range provides reliable actuation when paired with the factory-installed V-3000-1 pneumatic actuator. This unit utilizes a reinforced synthetic rubber diaphragm and a non-adjustable ring pack, delivering a tight shut-off that is essential for maintaining occupant comfort and optimizing energy efficiency in commercial hydronic systems.

Key Benefits:

• Reliable Sealing: Features a molded composition disc bonded to the plug assembly for high-integrity, tight shut-off.
• Durable Construction: Built with a corrosion-resistant brass valve body and a stainless steel stem for long-term service life in demanding environments.
• Precise Modulation: Provides a 12:1 rangeability with an equal percentage flow curve, critical for accurate temperature regulation.
• Efficient Installation: SAE 45-degree flare connections eliminate the need for soldering, simplifying field replacement and maintenance.

Common Questions:

What is the maximum pressure rating for the V-3966-1001?
This valve is rated for a maximum static pressure of 345 psi and a maximum operating pressure of 240 psi.

Is this valve suitable for steam applications?
No, the V-3966-1001 is designed for hot and cold water service. For steam applications, verify the specific diaphragm and seat material requirements for the V-3000 series.

Can the actuator be replaced in the field?
Yes, its design allows for the V-3000-1 actuator to be removed or repositioned easily by loosening a single set screw on the valve bonnet.

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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.