VG7251ET Johnson Controls Valve

Overview

The Johnson Controls VG7251ET is a high-quality, normally open (N.O.) two-way globe valve designed for accurate modulating control of hot water, chilled water, <50% glycol solutions, or steam in commercial HVAC systems. Housed in a durable cast bronze body with brass trim, this 1/2-inch valve features union globe end connections for straightforward installation and maintenance. It relies on a standard threaded stem design with a push-down-to-close (PDC) action, allowing for seamless integration with a wide variety of compatible electric or pneumatic actuators to establish a complete control assembly.

Features

• Two-way, normally open configuration providing reliable fail-safe operation.
• 1/2-inch pipe size with union globe end connections to simplify field installation and removal.
• 1.8 Cv flow coefficient matched with an equal percentage flow characteristic for precise modulating control.
• Cast bronze body coupled with brass trim and a stainless steel stem for excellent corrosion resistance and an extended service life.
• Push-down-to-close stem action ensuring highly predictable and repeatable valve positioning.
• Serviceable construction that supports in-place valve repacking to minimize maintenance downtime.

Specifications

• Brand: Johnson Controls
• Model / SKU: VG7251ET (VG7000 Series)
• Valve Type: Globe, 2-Way
• Action / Configuration: Normally Open (N.O.), Push-Down-to-Close
• Pipe Size: 1/2 inch
• Connection Type: Union Globe / NPT Threaded
• Flow Capacity (Cv): 1.8
• Flow Characteristic: Equal Percentage
• Body Material: Cast Bronze
• Trim Material: Brass (with Stainless Steel Stem)
• Pressure Rating: ANSI Class 250 (Max static pressure up to 400 psi)
• Maximum Fluid Temperature: 284°F (140°C) for water; supports saturated steam up to 15 psig with brass trim

Applications

The VG7251ET is engineered for environmental control in diverse commercial HVAC terminal equipment. It is ideal for modulating flow within hydronic heating and cooling coil control systems, fan coil units, unit ventilators, and baseboard radiation setups. Its equal percentage characteristic ensures optimal heat exchanger performance when precisely regulating water, water-glycol mixtures, or steam via pneumatic or electric building automation systems.