Johnson Controls VG7243NT+3008DP Valve Assembly

The Johnson Controls VG7243NT+3008DP is a high-performance 2-way normally open pneumatic valve assembly engineered for precise modulation of hot water, chilled water, and 35 psig saturated steam in commercial HVAC systems. This 1-inch NPT assembly features a 11.6 Cv equal percentage flow characteristic, ensuring stable control across its entire operating range. The unit is constructed with a rugged cast bronze body and stainless steel trim, specifically designed to resist corrosion and handle aggressive media. Equipped with the V-3000-8012 exposed pneumatic actuator and an integrated positioner, the VG7243NT+3008DP provides reliable spring return functionality and accurate valve positioning within a 4-8 PSI spring range. This VG7000 Series globe valve is tested for tight shutoff and utilizes a long-life replaceable ring packing, making it a staple for contractors prioritizing serviceability and longevity in hydronic and steam applications. Its NPT threaded connections allow for seamless integration into existing piping configurations requiring a Normally Open (N.O.) fail-safe position.

• Enhanced Durability: Features stainless steel trim and a cast bronze body for superior resistance to wear and corrosion in high-demand environments.
• Precise Flow Control: The 11.6 Cv equal percentage plug design provides linear heat output despite non-linear system pressures.
• Integrated Positioner: Ensures the exposed pneumatic actuator responds accurately to control signals, reducing hunting and maintaining setpoints.
• Fail-Safe Operation: The normally open configuration ensures system flow is maintained during a loss of diagnostic air pressure.
• Serviceable Design: Field-replaceable packing and a modular 1" NPT assembly simplify maintenance for veteran technicians.

What is the maximum pressure rating for this valve?
The VG7000 series with stainless steel trim is rated for hot and chilled water up to 248°F and saturated steam up to 35 psig.

Can the actuator be replaced without removing the valve body?
Yes, the VG7243NT+3008DP is designed with a threaded mounting collar that allows the pneumatic actuator to be serviced or replaced while the valve body remains in the line.

How does the 4-8 PSI spring range affect modulation?
The 4-8 PSI range defines the transition from fully open to fully closed; with the integrated positioner, this assembly ensures the 1-inch valve modulates smoothly between these points for equal percentage flow.

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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.