Space saving design

Prefabricated unit

Easy to install

TTM Shuntopac® 20-40 EK

Control unit for heat exchangers with aftercooling etc.

TTM Shuntopac® 20-40 EK is a control and regulation unit for heat exchangers with aftercooling. The Shuntopac 20-40 EK provides quick installation of both control and adjustment valve in a compact unit with thermometers. The unit can be equipped with several components of any brand.

Shuntopac 20-40 EK is supplied with fire and corrosion-proof housing in aluzinc sheet. Standard insulation is AF/Armaflex AF-4. The pipe package consists of fully welded pressure vessel pipes SS 1330-05 and DIN 2391.

EC declaration according to the Machinery Directive 2006/42/EC: “Partly completed machine.”


1. Control valve
Seat valve with threaded connection of any make and type. The valve is mounted in a flanged connection to facilitate service and replacement.

2. Measuring socket
Type IMI/TA STAD are fitted on all connections.

3. Drain plug
Version with hose connection R 1/2”.

4. Thermometers
3 pcs, graduated -40 – +40 °C.

5. Shut-off valve
1 pc. low lead ball valve with full flow and high
spindle neck. Mounted in tube pack with conical

6. Adjustment valve
1 pc. of any make and size. Mounted on a pipe bundle with conical coupling. IMI/TA STAD is supplied as standard. Can also be supplied with dynamic balancing valve and differential pressure regulator.

TTM Shuntopac® 20-40 EK mounting options

Configuration 09 EK


Configuration 10 EK


TTM Shuntopac ® 20-40 EK differential pressure measurement

All outside valves on the TTM Shuntopac® 20-40 EK are provided with test sockets, allowing complete differential pressure measurement.

B – A Differential pressure measurement across the adjustment valve.
The flow can be determined with a measuring instrument.

C – A Available differential pressure primary side.

C – H Pressure drop in connected object.

H – B Pressure drop across the control valve.

Dimensions TTM Shuntopac® 20-40 EK

Connection DN20253240
Weight, approx. kg10111213

Max. pressure: 1,0 MPa
Temp. range: -20– +110 °C
Specified dimensions are valid for the standard version. Some variations may occur if alternative equipment is used.

Variable flow on both primary and secondary side. The control valve is mounted in the return pipe.

09 EK

10 EK

Simonsland in Borås

When Kanico created a new district in the town of Borås, they chose TTM to supply shunt units for the HVAC systems. The area is called Simonsland and contains 60,000 m2 of buildings.

The opera house in Copenhagen

TTM Energiprodukter was one of the suppliers in the construction of the prestigious Copenhagen Opera House Together with their reseller, the company succeeded in winning the deal and delivering 98 different shunt units.

New office in Solna

NCC are building their new head office at Järva Krog in Solna. The new head office has a strategic and easily accessible position adjacent to the E4 motorway.