Bray ST75-2-10 3/4 in 2-Way Soft Touch Characterized Ball Valve Cv 10 NPT HVAC

The Bray ST75-2-10 is a 3/4-inch, 2-way characterized ball valve from the Bray SoftTouch Series, engineered for accurate and cost-effective flow control in commercial HVAC applications. With a flow coefficient (Cv) of 10, this valve is well-suited for hydronic heating and cooling systems handling hot water, chilled water, and 50/50 glycol solutions.

Key Features:

• Valve Size: 3/4 inch (20 mm) NPT threaded end connections
• Flow Configuration: 2-way (single inlet, single outlet)
• Flow Coefficient: Cv 10
• Body Material: Forged brass, 2-piece construction
• Ball & Stem: 300 Series stainless steel for corrosion resistance and long service life
• Seat Material: Graphite-reinforced PTFE with EPDM O-ring backing for low operating torque and tight shutoff
• Stem Seals: Double EPDM O-rings with blowout-proof, anti-rotation design
• Flow Characteristic: Equal percentage via Amodel® Flow Characterizing Disk for precise temperature control
• Valve Body Pressure Rating: 580 PSI (PN 40) cold working pressure
• Close-Off Pressure: 200 PSIG (1,379 kPa)
• Temperature Range: -22°F to 284°F (-30°C to 140°C) for water; saturated steam up to 15 PSIG
• Compatible Media: Chilled water, hot water, 50/50 glycol solutions, and low-pressure saturated steam
• Leakage Class: 0.01% of maximum flow per ANSI/FCI 70-2, Class 4
• Direct-mount actuator compatibility — accepts a range of Bray SoftTouch electric actuators (on/off, floating, or modulating) without brackets or linkages

The SoftTouch ball valve's blowout-proof stem, self-centering stem bushing, and innovative double O-ring stem seal design simplify electric actuator field mounting while ensuring long service life and leak-free performance. The graphite-reinforced PTFE seats significantly reduce operating torque, minimizing actuator sizing requirements. This valve is ideal for zone control, fan coil units, air handling units, and other HVAC hydronic applications requiring reliable modulating or on/off control.