Description
Belimo B318 Three-Way Ball Valve Overview
The Belimo B318 is a precision-engineered 3/4″ NPT, 3-way ball valve designed for demanding chilled water and hot water HVAC hydronic applications. With a 7.4 Cv flow coefficient and a maximum operating temperature of 250°F, this valve delivers reliable, accurate flow control in commercial and industrial systems.
Flow Characteristics
- A-port: Equal Percentage flow characteristic for precise, proportional flow control
- B-port: Modified flow characteristic engineered for constant common port flow, ensuring stable system performance
- 3-way configuration supports mixing or diverting service
Construction & Materials
- Nickel Plated Forged Brass valve body for superior corrosion resistance and durability
- Stainless Steel ball and stem for long service life and resistance to scaling and corrosion
- 3/4″ NPT end connections for straightforward installation
Performance Specifications
- Flow Coefficient (Cv): 7.4
- Connection Size: 3/4″
- Connection Type: NPT (National Pipe Thread)
- Valve Configuration: 3-Way
- Maximum Operating Temperature: 250°F
- Suitable Media: Chilled Water, Hot Water
Applications
The B318 is ideal for use in fan coil units, air handling units, and other hydronic terminal equipment where precise flow modulation is required. Its equal percentage A-port characteristic makes it well-suited for variable flow systems, while the modified B-port ensures a consistent flow rate at the common port — a key advantage in two-pipe changeover and four-pipe hydronic systems.
Why Choose the Belimo B318?
- Engineered specifically for chilled and hot water HVAC service
- Nickel-plated brass body resists corrosion in closed-loop hydronic systems
- Stainless steel ball and stem provide long-term reliability
- Compatible with Belimo actuators for full automated control integration
- Trusted Belimo quality backed by industry-leading engineering
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