Control circuit with constant value WS33 DN25(1"), flow right Setting range: 20-50°C

For thermally controlled surface heaters or low temperature heaters (e.g. underfloor heating)
Connections: DN25 (1”) internal thread

Check valve (adjustable) in the return pipe
• No noise when using electronically controlled pumps
• 200 mm water column, spring loaded, also suitable for horizontal or overhead mounting
• Supply and return flow exchangeable (changing the supply flow requires a mixer conversion kit, order no.: 90 006 84 or 85 required, not included)
• Contact thermostat, adjustable 20 - 60 °C, exceeding the set temperature switches off the pump.

3-way mixer with bypass 0-50%
and thermostat control
• Controlled by thermostat with contact probe (control range 20 - 50 °C)
• Adjustment is made by hand
• Adjustable bypass
• Reflux lock integrated in the mixer, prevents unwanted circulation

Materials
• Fittings: Brass
• Seals: EPDM/NBR
• Insulation according to EnEV: EPP

Technical data
• Area of application: to 10 kW
• Kvs value: 2.6
• Temperature: max. 110°C
• Pressure: max. 8 bar
• • Inlet/outlet: DN25 (1”) IT

Dimensions
• Centre distance: 125 mm
• Installation length: 345 mm
• Insulation dimensions (WxH): 250 x 415 mm

Pump is not included!
(suitable pump: DN25 with external
thread DN40 (1½"), 180 mm length)