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Three-way reversing valve

Three-way reversing valve for mass flow distribution in heating and cooling systems.

Información de Producto

For heating and cooling systems

Three-way reversing valve for mass flow distribution in heating and cooling systems.

Key features

Valve body in gunmetal

Corrosion-resistant and safe

For all HEIMEIER thermostatic heads and actuators

Stainless spindle with double O-ring seal

Outer O-ring can be replaced while under pressure

Technical description


Heating and cooling systems.


Distribution of mass flow


DN 15-25

Pressure class:

PN 10

Max. differential pressure (ΔpV):

DN 15: 120 kPa = 1.20 bar
DN 20: 75 kPa = 0.75 bar
DN 25: 50 kPa = 0.50 bar


Max. working temperature: 120°C, with protection cap or actuator max. 100°C.
Min. working temperature: 2°C.
Low-pressure steam 110°C/0.5 bar.


Valve body: Corrosion resistant Gunmetal.
O-rings: EPDM rubber
Valve disc: EPDM rubber
Return spring: Stainless steel
Valve insert: Brass
Spindle: Niro-steel spindle with double O-ring sealing. The outer O-ring can be replaced under pressure.


THE, DN, PN, country code, flow direction arrow, marking of control gates (I, II, III).
Black protection cap.

Pipe connection:

Connection with threaded or soldering nipples. Flat sealing.

Connection to thermostatic head and actuator:


The products, texts, photographs, graphics and diagrams in this document may be subject to alteration by IMI Hydronic Engineering without prior notice or reasons being given. For the most up to date information about our products and specifications, please visit



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