Data Sheet
Integrated Presetting Valves
-type 013G0372 for normal volume flows
-type 013G0373 for small volume flows
Application
Ordering and
Technical Data
Integrated valves, type RA-N (013G0372) and RAU (013G0373), with built-in presetting are designed for incorporation into valve radiators from different radiator manufacturers.
The two valve types can be recognised by the colour of the presetting ring:
•Red: RA-N
•Yellow: RA-U
Integrated valves can be used in single and two pipe installations with circulating pump.
The gland seal of the valve can be replaced while the system is in operation.
To avoid calcification and corrosion, it is important for the composition of the circulating water to comply with the VDI 2035 guidelines.
Danfoss thermostatic sensors types RA 2000 and RAW with patented snap socket as well as Danfoss thermo-hydraulic actuators can be installed directly onto the integratred valve.
Approved to EN 215
Integrated presetting valves type RA-N 013G0372 and type RA-U 013G0373 are manufactured to the highest standards, and are approved to the European standard EN 215.
Connec- |
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Pre-setting |
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Max. |
Diff. press.3) |
Test |
Work |
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water |
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kv-value1) 2) |
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kvs |
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tion |
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temp. |
Rec. |
Tech. |
press. |
press. |
Code no. |
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thread |
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1 |
2 |
3 |
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4 |
5 |
6 |
7 |
N |
N |
°C |
bar |
bar |
bar |
bar |
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G½A |
0.14 |
0.21 |
0.26 |
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0.32 |
0.46 |
0.59 |
0.73 |
0.87 |
1.05 |
120 |
0.05- |
0.6 |
16 |
10 |
013G0372 |
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G½A |
0.04 |
0.05 |
0.07 |
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0.09 |
0.13 |
0.18 |
0.24 |
0.34 |
0.55 |
0.2 |
013G0373 |
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Spare Parts and
Accessories
1)kv-values indicate the flow volume (Q) in m3/h at a pressure loss (Δp) across the valve of 1 bar. Kv = Q:√∆p. At setting N, the kv-value in accordance with EN 215 can be stated as Xp = 2 K. At lower preset values, Xp will be reduced until approximately Xp 0.5 at presetting 1. The table shows the average measured values for integrated valves with radiator. The kvs-values indicate the valve capacity, when the valve is fully open.
2)When using a liquid filled radiator thermostat e.g. RAW, RAS-D or remote setting element type RA5060 Xp will be increased by factor 1.6 (at setting “N”, ref. EN 215).
3)The technical differential pressure indicates the upper limit for a proper valve function. In most two-pipe systems the recommended differential pressure is sufficient. In order to achieve a noiseless function we recommend in smaller systems to apply automatic bypass valves or automatic balancing valves. If pump differential pressure exceeds the recommended max. valve differential pressure it is recommended that an automatic balancing valve type ASV-P/PV is added to the system.
Product |
Code no. |
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Gland seal*, 10 pcs. |
013G0290 |
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Red protection cap for RA-N valve 013G0372 |
013G0951 |
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Yellow protection cap for RA-U valve 013G0373 |
013G0952 |
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Small O-ring |
633B1427 |
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Big O-ring |
633B0387 |
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* The gland seal of the valve can be replaced under pressure, i.e. while the installation is in operation.
VDVEB402 |
© Danfoss |
11/2013 |
1 |
Data Sheet |
Integrated Presetting Valves for normal and small volume flows |
Design and Dimensions |
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The dimensions stated may vary according to different radiator manufacturers (013M5058 E0002 001 047 97.03.25)
Materials
Part |
013G0372 |
013G0373 |
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Valve housing |
Ms 58 |
Ms 58 |
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Valve seat |
PPS |
Ms 58 |
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Throttle nozzle |
PPS |
PPS |
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Setting dial |
Plastic |
Plastic |
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O-rings |
NBR / EPDM |
NBR / EPDM |
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Valve spindle |
PPS |
Ms 58 |
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Valve cone |
NBR |
NBR |
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Pressure pin and valve spring |
Chrome steel |
Chrome steel |
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Pre-setting
1
1. Reference mark.
The presetting values of the integrated valves can be adjusted easily and accurately without the use of tools (factory setting: ‘N’):
•Remove the protective cap or the thermostatic sensor.
•Find the reference mark.
•Turn the setting ring until the desired presetting aligns with the reference mark.
The presetting is controlled directly without use of equipment. After installation in the radiator, the reference mark of the valves will not always be positioned in the same place.
Presetting can be selected infinitely variably within the range of 1 to 7. At setting ‘N’ the valve
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3 |
1
2.Presetting range.
3.Factory setting and one-pipe system.
is fully open. Setting in the shaded areas of the drawing should be avoided.
In a one-pipe installation, the setting ‘N’ must be used.
Setting ‘N’ can be used as a flushing position if the system has to be flushed out because of dirt problems.
When the radiator thermostat has been installed, the presetting is protected against unintended regulation.
For Danfoss elements RA 2000 and RAW, a theft protection device is available; this also provides added security against unwanted adjustment of the preset values.
2 |
VDVEB402 |
© Danfoss |
11/2013 |
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