Description
Belimo B339 — 3-Way Ball Valve for Chilled & Hot Water Applications
The Belimo B339 is a high-performance 3-way ball valve engineered for reliable flow control in commercial and industrial HVAC hydronic systems. Featuring a nickel-plated forged brass body paired with a stainless steel ball and stem, this valve delivers the durability and corrosion resistance demanded by both chilled water and hot water applications up to 250°F maximum.
Key Features
- 1-1/2″ NPT connection for straightforward installation into standard piping systems
- 29 Cv flow coefficient for precise, high-capacity flow regulation
- 3-way configuration for mixing or diverting service
- A-port: Equal Percentage flow characteristic for accurate modulating control
- B-port: Modified flow characteristic designed for constant common port flow
- Nickel-plated forged brass body for enhanced corrosion resistance and long service life
- Stainless steel ball and stem for superior durability in demanding hydronic environments
- Rated for chilled water and hot water service up to 250°F maximum
Flow Characteristics
The B339’s dual-port flow design makes it ideal for variable flow hydronic systems. The A-port equal percentage characteristic provides fine modulating control across the full valve stroke, while the B-port modified characteristic maintains consistent flow at the common port — reducing system pressure fluctuations and improving overall hydronic balance.
Typical Applications
- Chilled water coil control in air handling units and fan coil units
- Hot water heating coil control
- 3-way mixing and diverting service in commercial hydronic systems
- Building automation and DDC control systems when paired with a compatible Belimo actuator
Specifications
- SKU: B339
- Brand: Belimo
- Valve Type: Ball Valve, 3-Way
- Pipe Size: 1-1/2″
- Connection Type: NPT
- Cv: 29
- A-Port Flow Characteristic: Equal Percentage
- B-Port Flow Characteristic: Modified (Constant Common Port Flow)
- Body Material: Nickel-Plated Forged Brass
- Ball & Stem Material: Stainless Steel
- Maximum Temperature: 250°F
- Media: Chilled Water, Hot Water
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