Mixing valves TV 4S

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TV 4S are 4-way brass mixing valves intended for control of heating applications.

TV 4S are used to preheat the return flow to the heat source in order to reduce the risk of condensation. The valves are fitted with a wheel for manual mixing but can easily – and with advantage – be motorised, e.g. with our Thermomatic controls. The scale is graded on both sides, and can be reversed. All important parts can easily be replaced.

Our mixing valves can be supplied with the following connections and Kvs values


  • R15 / 1⁄2” Rp and G
  • R20 / 3⁄4” Rp and G
  • R25 / 1” Rp and G
  • Cu18
  • Cu22
  • Cu28

Pump flange R40 / 1 1⁄2” Rp can be pre-fitted on special order. It is also possible to combine different connection dimensions.

Kvs values:


Technical data

Turning angle: 90°
Pressure class: PN 10
Mediatemperature: max. (continual) +110°C
max. (temporary) +130°C
min. 0C
Torque (at nominal pressure): < 3 Nm
Operating pressure: 1 MPa (10 bar)
Connections: Rp (internal thread), EN 10226-1
G (external thread), ISO 228/1
Cu (compression fit), EN 1254-2