Danfoss RLV-KDV Data sheet

Data Sheet

RLV-KDV H-Piece for valve radiators - blockable and drainable, with integrated differential pressure control

Application

RLV-KDV is a Dynamic H-piece designed for radiators with integrated valves (valve radiators) in 2-pipe systems. RLV-KDV combines the following functions:

•Integrated differential pressure controller using membrane technology.

•Constant pressure over the radiator and valve in full and partial load.

•Self-balancing to optimal pressure conditions once the flow presetting on the integrated radiator-valve is done.

•Lockshield on supply and return.

•Filling and draining possibility (with fill and drain tap 003L0152).

•Self sealing connection pieces to the radiator for G ½ internal thread and G ¾ external thread.

The flow adjustment presetting is done on the radiator valve. As a result the heating system is self balancing to the preset volume in the

integrated valve and working on optimal conditions in full and partial demand.

This results in lowered return temperature, energy saving and preventing claims due to noise in the radiator.

Self sealing connection pieces ensure that RLV-KDV can be used both for radiators with an internal thread of G ½ and with an external thread of G ¾ A.

A fill and drain tap is available as an accessory. 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).

System	Two-pipe system with valve radiators, typical connection types.

RLV-KDV	RLV-KDV	RLV-KDV	RLV-KDV
Straight Left	Straight Right	angle Right	angle Left

Ordering and data

			Connection		Max.		Max.
						Test		p min/	Code no.
	Type	Version			operation		water
			Radiator	System		pressure		p max
					pressure		temp.
		Straight R & L							013G7870
	RLV-KDV
		Angle Right	G ½	G ¾ A					013G7871
	with
		Angle Left							013G7872
	constant				10 bar	16 bar	95 ˚C	0.15 bar /
	differential	Straight R & L						0.60 bar	013G7873
	pressure
		Angle Right	G ¾	G ¾ A					013G7874
	control
		Angle Left							013G7875

© Danfoss Climate Solutions | 2021.06 | AI325141533218en-000102

1

Data Sheet	RLV-KDV H-Piece for valve radiators with integrated differential pressure control
Capacities
	RA-N
	Presetting		1	2	3	4	5	6	7	N
	No Sensor	Max. (l/h)	43	55	71	85	117	139	148	159
	Gas Sensor	Xp1	35	50	65	75	95	105	115	125
		Xp2	35	50	65	75	110	120	135	150
		Valve-kv*	0.088	0.131	0.163	0.200	0.288	0.369	0.456	0.544
	Liquid Sensor
		Xp1	28	40	50	55	70	75	80	85
		Xp2	35	50	65	75	95	105	120	130

* kv-value used for presetting of non-Danfoss integrated valves in radiators

(Capacities comply to all radiators inside a -+ 10% span depending on the radiator type and size.)

2 © Danfoss Climate Solutions | 2021.06 | AI325141533218en-000102