Danfoss RLV-K Data sheet

Data sheet H-piece valves type RLV-K

for valve radiators

- with adjustable radiator share for
one-pipe and two-pipe systems

- blockable and drainable

RLV-K straight,
radiator connection G ½ and G ¾ A

Application

System

RLV-K angle,
radiator connection G ½ and G ¾ A

By means of the H-piece valve type RLV-K,
every valve radiator with a centre distance
between the connections of 50 mm can be
blocked individually, e.g. in order to carry out
trouble-free maintenance without affecting
other parts of the system.

H-piece valve type RLV-K is nickel plated and
is available in straight and angle versions.
Special adapters ensure that the H-piece
valve can be used both for radiators with an
internal thread of G ½ and with an external
thread of G ¾ A. All adapters are self-sealing.

RLV-K can be shifted from two-pipe to one­pipe operation. The factory setting is for two­pipe operation.

Two-pipe system

Fill and drain tap

In one-pipe operation, the water flow to the
radiator can be set infinitely variably. The shift
to one-pipe operation is simply done by turn­ing the bypass spindle.

A fill and drain tap is available as an acces­sory to RLV-K. The fill and drain tap is only
available without nickel plating.

Connection to copper, soft steel, PEX and
Alupex pipes is made with Danfoss compres­sion fittings. See separate datasheet.

In order to avoid deposition and corrosion, the
composition of the hot water should be in
accordance with the VDI 2035 guideline
(Verein Deutscher Ingenieure).

One-pipe system

Ordering and data

Type Version Code no.

Angle 003L0282

RLV-K

CD-ST VD.33.W1.02 © Danfoss 08/99

Straight 003L0280

Angle 003L0283

Straight 003L0281

Connection

Radiator System

G 1/2 A G 3/4 A

G 3/4 G 3/4 A

Max.

operation

pressure

10 bar

Test

pressure

16 bar

Max.

water

temperature

120 °C

Data sheet

H-pieces type RLV-K for valve radiators

Accessories

Capacity

Product Code no.

Fill and drain tap without nickel plating,
with ¾" external thread and hose nozzle

1)

Adapter

incl. seal for valve radiator with G ¾ A

external thread

Self-sealing connection nippel
with G ½ internal thread

Convection brake

1)

for one-pipe systems

1)

for valve radiator

RLV-K is suitable for connecting copper, soft

1)

Packing size = 20 pcs.

003L0152

003L0294

003L0295

003L0296

steel or plastic pipes. Use Danfoss compres­sion fittings.

kv-value (m3/h)

Radiator share 100%2)50% 35% 30% 25% 20%

RLV-K kvs-value 1.4 1.8 2.0

RLV-K with RA-N integrated valve

RLV-K set to 35% k

with RA-N integrated valve

1)

Radiator flow in accordance with the setting of the bypass regulation with radiator and Danfoss inte­grated valve, type RA-N.

2)

Factory setting = two-pipe operation.

3)

The kv-values give the flow volume (Q) in m3/ through the RLV-K union in combination with a Danfoss
built-in valve with k

= 0.87 m3/h at Xp = 2 K.

v

1)

1)

3)

kv-value

-value 1.4 1.3 1.2

v

Presetting value N N N 6 5 4

0.7 1.2 1.5

Setting of bypass regula­tion in one-pipe operation

The factory setting RLV-K is for two-pipe op­eration. This means that the integral bypass
regulation is turned off.

Shifting to one-pipe operation is made by
opening the bypass spindle. The radiator
share (flow) can be adjusted infinitely variably.

The connection between flow and number of

can be seen from the diagram next to

turns
this text (at setting "N" of the Danfoss inte­grated valve and at Xp = 2 K).

Draining of the radiator To drain the radiator, first unscrew the cover

caps. Then shut-off the inlet and return flow.
When the drain tap has been mounted, open
it by turning the square (see ill.).

The accompanying hose nozzle can revolve in
any direction.

%

Radiator share in %

Number of turns of the bypass spindle

CD-ST VD.33.W1.02 © Danfoss 08/99 2