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Due to automatic bypass control
For easy connection to the return
For durable and maintenance free operation
Corrosion-resistant and safe
Two-pipe or one-pipe pump heating systems.
ControlShut-offAvoids additional differential pressureEnsuring minimum amounts of water circulation
Max. working temperature: 120°C, with protection cap or actuator 100°C.Min. working temperature: -10°C.
Valve body: corrosion resistant GunmetalBypass T-piece: BrassO-rings: EPDM rubberValve disc: EPDM rubberReturn spring: Stainless steelValve insert: BrassSpindle: Niro-steel spindle with double O-ring sealing. The outer O-ring can be replaced under pressure.
Valve body and fittings are nickel-plated.
THE and flow direction arrow. Black protection cap.
The valve body and the bypass T-piece are designed for connection to threaded pipe, or in conjunction with compression fittings, to copper precision steel or multi-layer pipe.
Thermostatic three-way valve body
The thermostatic three-way-valve bodies are used in two-pipe pump heating systems. For one-pipe pump heating systems a retrofitting thermostatic insert is available. When almost all valves are closed at the same time, additional pressures build up in the heating system. If the three-way valve intercepts the radiator flow, the bypass for the return flow is fully opened. Additional pressures are avoided and the pressure is kept almost constant. The bypass can be connected with the corresponding bypass T-piece on the radiator return.
Connection on the radiator left
1) Distribution ratio at 2.0 K approx. 50%.2) Total Kv-value for radiator and bypass.
*) SW1: 27mm, SW2: 30mm
Kvs = m3/h at a pressure drop of 1 bar and fully open valve.
Kv [xp] max. 1 K / 2 K = m3/h at a pressure drop of 1 bar with thermostatic head.
Connection on the radiator right
Connection on the radiator left or right
For the application of thermostatic three-way valve bodies in one-pipe heating systems.The circuit flow rate is designed to be distributed to 35% radiator and 65% bypass.Kv-value total 2,40 [m3/h] (with 2 K p-band).Flow diagram on request.
for copper or precision steel pipe according to DIN EN 1057/10305-1/2.Female thread connection Rp3/8 – Rp3/4.Metal-to-metal joint. Brass nickel-plated.Support sleeves should be used for a pipe wall thickness of 0.8 – 1 mm. Follow the specifications of the pipe manufacturer.
for copper or precision steel pipe with a 1 mm wall thickness. Brass.
for Alu/PEX multi-layer pipe according to DIN 16836. Female thread connection Rp1/2.Nickel-plated brass.
For clamping plastic, copper, precision steel or multi-layer pipes.Nickel-plated brass.
for copper or precision steel pipe according to DIN EN 1057/10305-1/2. Connection male thread G3/4 according to DIN EN 16313 (Eurocone). Metal-to-metal joint. Nickel-plated brass. With a pipe wall thickness of 0.8-1 mm insert supporting sleeves. Heed pipe manufacturer’s technical advice.
for copper or precision steel pipe according to DIN EN 1057/10305-1/2 and stainless steel pipe. Connection male thread G3/4 according to DIN EN 16313 (Eurocone). Soft sealed, max. 95°C. Nickel-plated brass.
for plastic pipe according to DIN 4726, ISO 10508. PE-X: DIN 16892/16893, EN ISO 15875; PB: DIN 16968/16969. Connection male thread G3/4 according to DIN EN 16313 (Eurocone). Nickel-plated brass.
for Alu/PEX multi-layer pipe according to DIN 16836. Connection male thread G3/4 according to DIN EN 16313 (Eurocone).Nickel-plated brass.
Please use the below link to browse and download IMI Hydronic Engineering BIM files for Revit. It requires a free registration.
With built-in sensor and remote sensor
With built-in sensor
for thermostatic radiator valves