Danfoss RA-FN Data sheet

Data Sheet

Fixed Capacity ValvesType RA-FN (Series F)

Application

RA-FN straight

RA-FN angle

RA-FN horizontal angle

Approved to EN 215

Code Nos. and Technical

Data

The RA-FN valve bodies are used in two-pipe heating systems.

The valves 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 seal. The complete gland assembly can be replaced without draining down the system.

The valves are supplied with a grey 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 (code no. 013G3300) should be used.

All Danfoss RA-FN fixed capacity valves, series F, are certified according to the European Standard EN 215.

Compression fittings for 15 mm, 10 mm or 8 mm copper tube are available for RA-FN with 3/8” and 1/2” connections.

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.

All RA-FN valve bodies can be used together with all types of thermostatic elements in the Danfoss RA2000 series.

Valve bodies for two-pipe systems type RA-FN (series F)

			Connections		kv-value 1) (m3/h at 1 bar					Max.
	Type	Design			pressure drop), P-band = K					working	Code no.
										temp.
			Inlet	Outlet	0.5K	1.0K	1.5K	2.0K	kvs
	RA-FN 10	angle	Rp 3/8	R 3/8	0.17	0.34	0.47	0.56	0.65	120 °C	013G0001
	RA-FN 10	straight	Rp 3/8	R 3/8	0.17	0.34	0.47	0.56	0.65	120 °C	013G0002
	RA-FN 10	horizontal	Rp 3/8	R 3/8	0.17	0.34	0.47	0.56	0.65	120 °C	013G0141
	RA-FN 15	angle	Rp 1/2	R 1/2	0.22	0.43	0.57	0.73	0.90	120 °C	013G0003
	RA-FN 15	straight	Rp 1/2	R 1/2	0.22	0.43	0.57	0.73	0.90	120 °C	013G0004
	RA-FN 15	horizontal	Rp 1/2	R 1/2	0.22	0.43	0.57	0.73	0.90	120 °C	013G0143

Danfoss Heating Solutions

VDSXI202

© Danfoss

12/2010

1

Data Sheet	Fixed Capacity ValvesType RA-FN (Series F)
	RA-FN 20	angle	Rp 3/4	R 3/4	0.30	0.58	0.83	1.04	1.40	120 °C	013G0005
	RA-FN 20	straight	Rp 3/4	R 3/4	0.30	0.58	0.83	1.04	1.40	120 °C	013G0006
	RA-FN 20	horizontal	Rp 3/4	R 3/4	0.25	0.50	0.67	0.80	1.00	120 °C	013G0145
	RA-FN 25	angle	Rp 1	R 1	0.30	0.58	0.83	1.04	1.40	120 °C	013G0027
	RA-FN 25	straight	Rp 1	R 1	0.30	0.58	0.83	1.04	1.40	120 °C	013G0028

Max. working pressure2): 10 bar. Max. differential pressure: 0.6 bar Test pressure: 16 bar

1) The kv-value indicates the water flow (Q) in m3/h at a pressure drop (∆p) across the valve of 1 bar;

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. The kvs-value states the flow Q at a maximum lift, i.e. at fully open valve.

2) 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.

System

2

VDSXI202

© Danfoss

12/2010

Danfoss Heating Solutions

Data Sheet	Fixed Capacity ValvesType RA-FN (Series F)

Capacities

RA-FN DN10

[mwg]

Q [l/h]

RA-FN	DN15
[mwg]
	Q [l/h]

Danfoss Heating Solutions

VDSXI202

© Danfoss

12/2010

3