• Materials:
  • Valve Body: Forging Brass
  • Valve Stem: Stainless Steel (1Cr18Ni9)
  • Spring: Stainless Steel Wire (1Cr18Ni9)
  • Inner Cover: PBT
  • Piston: FRPA-66
  • O-Sealing-Ring: Nitrile rubber
• Valve Body Rating: Pressure 1.6MPa
• Stroke: 4.5 mm
• Max Allowed Flow Speed: 3 m/s
• Allowed Liquid: Water, Water + Glycol
• Temperature Range: 5–95℃
• Leakage: 0 (Tight close-off on direct and bypass)

The V4 series valve body is designed for temperature control in air-conditioning or radiator heating systems.

• Model and Valve Type:
  • V4-D15S(U): 2-way valve, Flow Rate (Kv) Direct Way: 1.6, Closing-off Pressure: 0.25 MPa, Connecting Size: G1/2
  • V4-D20S(U): 2-way valve, Flow Rate (Kv) Direct Way: 2.5, Closing-off Pressure: 0.15 MPa, Connecting Size: G3/4
  • V4-D15M: 3-way valve, Flow Rate (Kv) Direct Way: 1.6, Bypass: 1.0, Closing-off Pressure: 0.25 MPa, Connecting Size: G1/2
  • V4-D20M: 3-way valve, Flow Rate (Kv) Direct Way: 2.5, Bypass: 1.6, Closing-off Pressure: 0.15 MPa, Connecting Size: G3/4
  • V4-D15T: 3-way with bypass valve (4 outlets), Flow Rate (Kv) Direct Way: 1.6, Bypass: 1.0, Closing-off Pressure: 0.25 MPa, Connecting Size: G1/2
  • V4-D20T: 3-way with bypass valve (4 outlets), Flow Rate (Kv) Direct Way: 2.5, Bypass: 1.6, Closing-off Pressure: 0.15 MPa, Connecting Size: G3/4
• Dimensions:
  • V4-D15S(U): DN D15, A: 52 mm, B: 47 mm, C: 19.5 mm, D: 63 mm
  • V4-D20S(U): DN D20, A: 56 mm, B: 47 mm, C: 22 mm, D: 63 mm
  • V4-D15M: DN D15, A: 52 mm, B: 50 mm, C: 25 mm, D: 66 mm
  • V4-D20M: DN D20, A: 56 mm, B: 59 mm, C: 37 mm, D: 78 mm
  • V4-D15T: DN D15, A: 52 mm, B: 70 mm, C: 35 mm, D: 86 mm
  • V4-D20T: DN D20, A: 56 mm, B: 88 mm, C: 50 mm, D: 104 mm

* "U" indicates a normally open 2-way valve that only works with the V4U actuator.