Johnson Controls VG7243LT+3008B Valve Assembly

Modernize your terminal unit controls with the Johnson Controls VG7243LT+3008B, a high-performance 2-way normally open globe valve assembly engineered for precise regulation of hot water, chilled water, and 50/50 glycol solutions. Built on the rugged VG7000 Series platform, this assembly features a 3/4 inch NPT threaded cast bronze body and stainless steel trim, specifically designed to handle demanding HVAC applications including saturated steam up to 100 psig. The integrated V-3000-8012 pneumatic actuator operates with a 3-6 psi spring range, providing reliable spring return safety by defaulting to the open position upon loss of signal. This 7.3 Cv equal percentage flow valve ensures stable modulation and tight shutoff, making it an essential component for contractors optimizing energy-efficient hydronic systems. Its exposed yoke design allows for easy maintenance and field repacking, significantly reducing long-term service labor in commercial building environments.

• Enhanced Durability: The stainless steel plug and stem provide superior corrosion resistance compared to standard brass trim, extending service life in steam and aggressive water conditions.
• Precise Modulation: Features an equal percentage flow characteristic to maintain linear heat output from coils, improving occupant comfort and system stability.
• High Thermal Capacity: Rated for fluid temperatures up to 338°F (170°C), allowing for versatile deployment across heating and cooling stages.
• Fail-Safe Operation: The normally open (push-down-to-close) configuration ensures critical heating or cooling flow remains active during pneumatic pressure failure.
• Field Serviceable: Standardized VG7000 Series bonnet design permits in-place repacking and easy actuator swaps without removing the valve body from the piping.

What is the maximum close-off pressure for this assembly?
The VG7243LT+3008B is rated for a maximum static pressure of 400 psi and is designed to provide reliable shutoff in ANSI Class 250 applications. Close-off ratings vary by actuator force; for this 3/4" model with the 3008B actuator, it typically supports substantial differential pressures found in standard terminal unit branch lines.

Can this valve be used for steam applications?
Yes. Because this model utilizes stainless steel trim, it is rated for saturated steam up to 38 psig (262 kPa) in standard configurations or up to 100 psig at 338°F when installed according to high-temperature specifications. Always ensure the actuator is protected from excessive radiant heat in steam setups.

Is the V-3000-8012 actuator replaceable?
Absolutely. The exposed pneumatic actuator can be removed or repositioned by loosening a single set screw on the yoke, allowing for rapid field replacement or the addition of a V-9502 pneumatic positioner if precise sequencing is required.

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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.