Belimo B313B 1/2″ NPT 3-Way Ball Valve, 4.7 Cv, Equal % / Modified Flow

Description

The Belimo B313B is a precision-engineered 3-way ball valve designed for reliable flow control in commercial and industrial HVAC hydronic systems. Built for both chilled water and hot water applications, this valve delivers consistent performance in demanding environments with a maximum operating temperature of 250°F.

Flow Characteristics

• A-port: Equal Percentage flow characteristic for precise modulating control
• B-port: Modified flow characteristic engineered to maintain constant common port flow
• Flow coefficient (Cv): 4.7 — optimized for accurate system balancing

Construction & Materials

• Body: Nickel Plated Forged Brass for superior corrosion resistance and durability
• Ball: Chrome Plated Brass for smooth, reliable operation and long service life
• Stem: Nickel Plated Brass for enhanced resistance to corrosion and wear

Specifications

• Valve Type: 3-Way Ball Valve
• Pipe Size: 1/2 inch
• Connection Type: NPT (National Pipe Thread)
• Flow Coefficient (Cv): 4.7
• Maximum Operating Temperature: 250°F
• Media: Chilled Water or Hot Water

Applications

• Chilled water coil control in air handling units and fan coil units
• Hot water heating coil control
• Hydronic mixing and diverting applications
• Building automation and energy management systems

Designed to pair with Belimo actuators, the B313B provides a dependable, drop-in solution for new installations and retrofit projects alike. Its robust brass construction and dual-port flow characteristics make it a top choice for HVAC professionals seeking long-term reliability and precise hydronic control.