13
Illustr. 4.1 Differential pressure measurement
Illustr. 4.2 Dimensions
4.3 Materials
Parts coming into contact with the fluid made of
dezincification resistant brass or bronze, valve disc
made of EPDM or PTFE, O-rings made of EPDM, stem
of the regulating insert made of stainless steel.
Protection cap with additional PTFE seal.
5 Construction and function
5.1 Summary and functional description
Oventrop regulating valves “Cocon 2TZ“ control the
room temperature by varying the flow rate with the
help of actuators. The valves are installed in the return
pipes of chilled ceiling modules for instance. To carry
out hydronic balancing of the chilled ceiling system,
a presetting for the modification of the flow resistance
can be carried out. The set value can be reproduced.
The required values can be obtained from the flow
charts.
Regulation of the installation can be carried out via the
pressure test points with the help of the Oventrop
measuring system “OV-DMC 2”.
∆p orifice
∆p
4.2 Dimensions/Connection sizes
98.5
M 30 x 1.5
53.5
33
∆p
Valve fully open
Mass flow q
m
[kg/h]
Pressure loss ∆p
orifice
[mbar]
Pressure loss ∆p
orifice
[Pascal]
Valve 1145104
Valve 1145204
Valve 1145004
Valve 1144904
Chart 4.1 Flow rate depending on the pressure loss
(∆p
orifice
) via the pressure test points (see illustr. 4.1)
67
70 (with k
vs
1.8)
Gland
31
Rp
1
⁄
2
Rp
1
⁄
2
Protection cap
