Danfoss RA-UN, RA-UR Data sheet
Data Sheet
Valve Bodies Types RA-UN and RA-UR for Small
Flow Volumes
Application
RA-UN / RA-UR angle RA-UN / RA-UR straight RA-UN / RA-UR horizontal angle
All RA-UN/UR valve bodies can be used together
with all types of thermostatic elements in the RA
2000 series.
The valve bodies are fitted with a kv limiting
device for presetting of max. water flow.
RA-UN is for mounting in the flow and RA-UR in
the return. An arrow on the valve body indicates
the direction of flow.
The valve bodies RA-UN/RA-UR are used in twopipe heating systems and is available with the
following setting ranges for max. water flow:
RA-UN:
RA-UR: kv = 0.02 - 0.47 m³/h
The valve bodies are supplied with a protective
cap and adjusting screw, which can be used for
manual regulation during the construction
phase.
kv = 0.02 - 0.48 m³/h
The protective cap must not be used as a manual
shut off device. A special manual shut off device
(code no. 013G5000) should be used.
To be able to distinguish between other valve
bodies of the RA 2000 series the protective cap is
yellow.
Compression fittings for 15 mm, 10 mm or 8 mm
copper tube are available for valve body RA-UN/
UR with 3/8" and 1/2" BSP connections.
Valve bodies are manufactured from brass with
nickel plating. The pressure pin of the gland seal
is of chrominium steel and works in a lifetime
lubricated O-ring. The gland seal can be replaced
without draining down the system.
Should water treatment be used it is essential
that dosing instructions of the manufacturer are
strictly observed. It is recommended that
formulations containing mineral oil are avoided.
Principles
Danfoss Heating Solutions VDSXE302 © Danfoss 02/2011 1
Data Sheet Valve Bodies Types RA-UN and RA-UR for Small Flow Volumes
Data and Ordering
Type Code no. Design
013G3001 Angle
1)
RA-UN 10
013G3002 Straight
013G3041 Horizontal angle
013G3003 Angle
RA-UN 15
1)
013G3043 Horizontal angle
RA-UN 20
013G3005 Angle
013G3006 Straight
013G3299 Angle
RA-UR 10
013G3298 Straight
013G3297 Horizontal angle
RA-UR 15
Type Code no.
013G3229 Angle
013G3228 Straight
1 2 3 4 5 6 7 N
013G3001
1)
RA-UN 10
013G3002
013G3041
RA-UN 15
1)
013G3003
013G3004
0.02 0.06 0.11 0.17 0.23 0.30 0.35 0.48
013G3043
RA-UN 20
013G3005
013G3006
013G3299
RA-UR 10
RA-UR 15
013G3298
013G3297
013G3229
013G3228
0.02 0.03 0.06 0.08 0.14 0.20 0.27 0.47
Connection
Inlet Outlet
Rp 3/8
Rp 1/2
Rp 3/4
Rp 3/8
R 3/8
R 1/2013G3004 Straight
R 3/4
R 3/8
With
actuator
N(kvs)
Max. pressure, bar
Work
0.57 10 0.6 16
00.53 10 1.0 16
Rp1/2
R1/2
Presetting, kv-values with RA 2000 sensor, m³/h
Diff.
3)
2)
Test
1)
The valve inlet is prepared for compression fittings.
2)
The maximum differential pressure specified is the maximum pressure at which the valves give
satisfactory regulation. As with any device which imposes a pressure drop in the system, noise may
occur under certain flow/pressure conditions. The differential pressure can be reduced by the use of the
Danfoss differential pressure regulators.
3)
The kv-value indicates the water flow (Q) in m³/h at a pressure drop (∆p) across the valve of 1 bar an.
. The kvs-value states the flow Q at maximum lift, i.e. at fully open valve at setting N.
Accessories
Product Dimension Code no.
Gland seal 1) (10 pcs.)
013G0290
Rp 3/8 x Ø 10 013G4100
Rp 3/8 x Ø 12 013G4102
Compression fittings for steel and copper tubes, incl. compression ring
and nipple (10 pcs.)
Rp 1/2 x Ø 10 013G4110
Rp 1/2 x Ø 12 013G4112
Rp 1/2 x Ø 15 013G4115
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Data Sheet Valve Bodies Types RA-UN and RA-UR for Small Flow Volumes
1)
The gland seal of the valve can be replaced under pressure, i.e. while the installation is in operation.
Presetting
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.
Lift up the setting ring.
▪
Turn the setting ring until the desired
▪
presetting aligns with the reference mark.
The reference mark will always point
▪
towards the radiator connection.
Let go of the setting ring.
▪
Presetting can be selected infinitely variably
within the range of 1 to 7. At setting ‘N’ the valve
is fully open. Setting in the shaded areas of the
drawing should be avoided.
When the radiator thermostat has been installed,
the presetting is protected against unintended
regulation.
1. Presetting range
2. Reference mark
Design
The radiator thermostats consist of a
thermostatic element of the RA 2000 series and a
valve body. The element and the valve body are
ordered separately.
Materials in contact with water
kv-limiter PPS
O‑ring EPDM
Valve cone NBR
Pressure pin and valve spring Chrome steel
Valve body and other metal
Ms 58
parts
Valve body surface Nickel-plated
1. Gland seal 5. Regulation spring
2. O-Ring 6. Setting dial
3. Pressure pin 7. Valve body
4. Seal 8. kv-nozzle
Danfoss Heating Solutions VDSXE302 © Danfoss 02/2011 3
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