WAF-4 | Belimo | Control Valves

Linkage kit




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product specifications

Actuator Series

Mechanical Accessory

Application Type




Unit of Measure


Accessory Type



1-1/4 to 3 in

product series specifications

  • Size: 1/2" - 3"
  • Cv Range: 0.8 to 240 (2-way), 0.3 to 83 (3-way)
  • Body Pattern: Two-way, three-way mixing or diverting
  • Flow Characteristic: Two-way equal percentage, three-way linear
  • Leakage Rating: 0% for port A to AB; 2% maximum for port B to AB
  • Maximum Closeoff Pressure: 200 psi (1/2"-2"), 100 psi (2"- 3")
  • Materials Of Construction: Forged brass body with nickel plating, chrome plated (or stainless steel) ball, PTFE Teflon® seals, Tefzel® characterized disc, EPDM o-rings
  • Media Compatibility: Hot or chilled water, <60% glycol
  • Media Temperature Range: 0° to 250°C (-18° to 120°C)
  • Compatible Actuators: Non-spring return TR, LRB, NRB, ARB; spring return TF, LF, AF
  • Pressure Drop: Maximum differential pressure 30 psi
  • Pressure Rating: 600 psi (1/2" to 1-1/4"), 400 psi (1-1/4" to 3") for two-way; 600 psi (1/2" to 1"), 400 psi (1-1/4" to 2") for three-way
  • Approvals: CSA, CE
  • Warranty: 5 years

product series features

  • Equal percentage characteristic (2-way)
  • Large Cv range from 0.8 to 170
  • Assembled, ready for installation
  • Spring return or non-spring return actuators
  • Floating, two-position, or proportional control

more information & related documents

Series Description

The B2 Series 2-way ball valves and B3 Series 3-way ball valves are used for two-position, floating or proportional control of HVAC hot or chilled water. Perfect for HVAC applications and Building Automation Systems, BAS, each two-way and three-way ball valve comes assembled with direct-coupled Belimo electric actuators with spring return or non-spring return operation.

Kele Description