Danfoss RA-N Radiator Valves Data sheet
Data Sheet
RA-N Radiator Valves with Integrated Presetting
and Self-Sealing Tailpiece
Application
Straight version Angle version Horizontal angle version
All RA-N valve bodies can be used together with
all types of thermostatic elements in the RA 2000
series and with TWA-A thermal actuators.
RA-N valves are used in two-pipe heating systems
and are available in series D and series F to fit
local standards.
The valve bodies are equipped with a self-sealing
tailpiece featuring an O-ring seal.
RA-N valves are fitted with a kv-limiting device for
pre-setting of max. water flow and are available
with the following setting ranges:
RA-N 15:
Each valve body is supplied with a red protective
cap, which can be used for manual regulation
during the construction phase.
The protective cap must not be used as a manual
shut off device. A special manual shut off device
is available as an accessory.
kv = 0.04 - 0.73 m³/h
RA-N valve bodies are manufactured from brass
with nickel plating.
The pressure pin of the gland seal is of chromium
steel and works in a lifetime lubricated O-ring.
The complete gland seal assembly can be
replaced without draining down the system.
In order to avoid deposition and corrosion the
composition of the hot water must be in
accordance with the VDI 2035 guideline (Verein
Deutscher Ingenieure).
It is recommended that formulations containing
mineral oil are avoided.
A comprehensive range of compression fittings
for PEX, AluPEX, copper and steel tubes are
available - please require special data sheet for
Danfoss compression fittings.
Approved to EN 215
Quality
Danfoss Heating Solutions VDSXL202 © Danfoss 02/2011 1
RA-N radiator valves with integrated
presetting and self-sealing tailpiece are
manufactured to the highest standards,
and are approved to the European standard EN
215.
All Danfoss RA 2000 radiator thermostats are
manufactured to the highest standards, and are
approved to the European standard EN 215.
All Danfoss radiator thermostats are
manufactured in factories, assessed and certified
by BSI (British Standards Institution) against ISO
9000 and ISO14001.
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Data Sheet RA-N Radiator Valves with Integrated Presetting and Self-Sealing Tailpiece
Presetting
The presetting values of RA-N valves can be
adjusted easily and accurately without the use of
tools (factory setting = N):
Remove protective cap/thermostatic sensor
▪
Find reference mark
▪
Lift and turn setting ring until the aquired
▪
presetting aligns with the reference mark.
Presetting can be selected in steps from 1 to 7. At
setting N the valve is fully open. This setting can
be used as a flushing position, if the system has
to be flushed out because of dirt problems. In
one-pipe installations, the setting N must be
used.
Settings outside 1 to 7 and N should be avoided.
When the thermostatic sensor has been installed,
the presetting is protected against unintended
regulation.
1. Presetting range
2. Factory setting and one-pipe system
3. Reference mark
Data and Ordering
Type Design
Connections
Max. work.
press.
Max. diff.
press.
1)
Test
Max. work.
temp.
Code no.Inlet Outlet
Rp R bar bar bar ˚C
Angle, F
013G0113
Straight, F 013G0114
RA-N 15
Angle, D 013G0115
1/2 1/2 10 0.6 16 120
Straight, D 013G0116
Horiz. angle, D 013G0117
Pre-setting
2)
k
Type Design
(m³/h at Δp = 1 bar)
v-max.
1 2 3 4 5 6 7 N N
Angle, F
Straight, F
RA-N
15
Angle, D
0.04 0.09 0.16 0.25 0.36 0.43 0.52 0.73 0.90
Straight, D
Horiz. angle, D
1)
Working pressure = static + differential pressure. 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. To ensure quiet
operation, maximum pressure drop should not exceed 30 to 35 kPa. The differential pressure can be
reduced by the use of the Danfoss differential pressure regulators types AVD, AVDL, AVDS, IVD or ASV-P.
2)
The kv-value indicates the water flow (Q) in m³/h at a pressure drop (∆p) across the valve of 1 bar;
k
vs
. At setting N the kv-value is stated according to EN 215, at XP = 2K i.e. the valve is closed at 2°C
higher room temperature. At lower settings the XP-value is reduced to 0.5K of the setting value 1. The
kvs-value states the flow Q at a maximum lift, i.e. at fully open valve at setting N.
2 VDSXL202 © Danfoss 02/2011 Danfoss Heating Solutions
Data Sheet RA-N Radiator Valves with Integrated Presetting and Self-Sealing Tailpiece
Accessories
Operating Principle
Product Dimension For valve body Code no.
Gland seal All RA valves 013G0290
Compression fittings for steel and copper tubes
All accessories comes in boxes of 10 pcs.
The radiator thermostats consist of the
thermostatic elements of the RA 2000 series and
the valve body RA-N. The element and the valve
body are ordered separately.
Rp 1/2 x Ø 10
Rp 1/2 x Ø 12 013G4112
Rp 1/2 x Ø 15 013G4115
1. Gland seal
2. O-Ring
3. Pressure pin
4. Seal
5. Regulation spring
6. Setting dial
7. Valve body
8. kv-nozzle
A clamping band with Allen screw ensures a
simple, firm connection between element and
valve body. The gland seal of the valve can be
changed in operation, i.e. with water and
pressure on the system.
RA-N 15
013G4110
Principles
Valve body and other metal
parts
Kv-limiter PPS
O-ring EPDM
Valve cone NBR
Pressure pin and valve spring Chrome steel
Nozzle PP
The valve bodies are nickle-plated on the outside.
Ms 58, brass
Max. ambient temperature 60 ˚C
Max. medium temperature 120 ˚C
Max. working pressure 10 bar
Test pressure 16 bar
Danfoss Heating Solutions VDSXL202 © Danfoss 02/2011 3
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