Danfoss VHS-DV Data sheet

Data Sheet

VHS-DV Pressure independent radiator valve

Application

VHS-DV straight VHS-DV angle

The VHS-DV is the ideal control valve for modern
base-connection radiators, as well as for universal
or bathroom radiators with connection distances
of 50mm between flow and return. Quick and
easy to install, it will accept standard Danfoss click
connection thermostat.

manual shut off device (code no. 013G5002)
should be used.

To be able to distinguish between other valve
bodies of the Danfoss RA series the VHS-DV
protective cap and presetting ring are green.

System layout

VHS-DV is a pressure independent radiator valve,
designed for use in 2-pipe heating systems
together with all types of thermostatic sensors
with Danfoss RA coupling.

VHS-DV dynamic valves are fitted with a flow
control device for presetting of the maximum
water flow. The valves are available with
maximum water flow of 10 - 135 l/h.

By use of the Danfoss DeltaP Tool commissioning
and pump optimization can be done in a fast and
efficient way.

VHS-DV has a built-in pressure regulator, which
keeps the differential pressure at a constant level
of 0.1 bar, thus maintaining the set flow.

VHS-DV is supplied with a protective cap, which
can be used for manual regulation during the
construction phase. The protective cap must not
be used as manual shut off device. A special

VHS-DV valve bodies are manufactured from
brass with a nickel plating.

The gland seal pressure pin is chrominium steel
and works in a lifetime lubricated O-ring. The
complete gland seal assembly can be replaced
without draining down the system.

Should water treatment be used it is essential
that the manufacturer’s dosing instructions are
strictly observed. Formulations containing
mineral oil should be avoided.

In order to avoid scale and corrosion the
composition of the hot water must be in
accordance with the VDI 2035.

Valve covers are available in white (RAL 9016) or
chrome.

Normal flow

Return flow

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Datasheet VHS-DV Pressure independent radiator valve

Ordering

Variant Pipe Design

Right or left

Right Angle 013G7916

Left Angle 013G7917

Right or left

Return

Straight

Straight 013G7876

Connection

Radiator System

G 1/2

Code no.

013G7915

G 3/4

Right Angle 013G7877

Left Angle 013G7878

Flow

Right or Left Straight

Right Angle 013G7880

G 3/4

013G7879

Left Angle 013G7881

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© Danfoss Climate Solutions | 03/2021 | AI373053774937en-000101

Datasheet VHS-DV Pressure independent radiator valve

Ordering cont.

Cover with collar is mainly used for VHS with G 1/2 radiator connection. Code no.

VHS-DV Collar cover straight pattern with sensor on the right
in white RAL 9016

VHS-DV Collar cover straight pattern with sensor on the left
in white RAL 9016

VHS-DV Collar cover straight pattern with sensor on the left in chrome 013G7954

VHS-DV Collar cover straight pattern with sensor on the right in
chrome

VHS-DV Collar cover angle pattern with sensor on the left
in white RAL 9016

VHS-DV Collar cover angle pattern with sensor on the right
in white RAL 9016

VHS-DV Collar cover angle pattern with sensor on the left in chrome 013G7972

VHS-DV Collar cover angle pattern with sensor on the right in chrome 013G7975

Cover without collar is mainly used for VHS with G 3/4 radiator connection Code no.

013G7956

013G7950

013G7963

013G79 66

013G7973

Accessories

VHS-DV cover straight pattern with sensor on the right
in white RAL 9016

VHS-DV cover straight pattern with sensor on the left
in white RAL 9016

VHS-DV cover straight pattern with sensor on the left in chrome 013G79 65

VHS-DV cover straight pattern with sensor on the right in chrome 013G79 62

VHS-DV cover angle pattern with sensor on the left
in white RAL 9016

VHS-DV cover angle pattern with sensor on the right
in white RAL 9016

VHS-DV cover angle pattern with sensor on the left in chrome 013G7971

VHS-DV cover angle pattern with sensor on the right in chrome 013G79 68

Accessories Code no.

Gland seal, 10 pcs. 013G 0290

∆p tool for pump optimization 013G78 61

Valve insert with Regulator (5 sets) 013G7831

PFM100 measuring instrument 003L8260

Service Insert, RA-DV reverse (5 sets) 013G7980

Fill-and-drain fitting, not nickel-plated, with 3/4” ext. thread and hose nozzle 003L0152

Sealing cone incl. seal for valve radiator with 3/4” ext. thread (20 pcs.)

Self-sealing connection nipple for valve radiator with G½ int. thread (20 pcs.)

Manual handwheel for all RA type valves (valve diff. pressure max. 0.6 bar)

013G79 61

013G79 6 4

013G7970

013G7955

003L0294

003L0295

013G500 2

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VHS-DV Straight

VHS-DV Angle reverse

VHS-DV Angle

Datasheet VHS-DV Pressure independent radiator valve

Presetting

The presetting values of VHS-DV valves can be adjusted easily and accurately without the use of tools
(default setting = N).

Presetting can be selected in steps from 1 to 7:

• Remove protective cap / thermostatic sensor.

• Find reference mark ().

• Turn setting ring until the aquired presetting aligns with the reference mark.

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.

When the thermostatic sensor has been installed, the presetting is protected against unintended
regulation.

Technical Data

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Max. working pressure

1)

10 bar

Max. differential pressure 0.6 bar

Min. differential pressure 0.1 bar

Test pressure 16 bar

Max. working temperature 95° C

Min. working temperature 2° C

Presetting 1 2 3 4 5 6 7 N

3)

• Max

• with RA 2000 sensor

2)

• with RAW, RAE or RAS-C sensor

1)

Working pressure = static + differential pressure. The maximum differential pressure specified is the maximum pressure

at which the valves give satisfactor y regulation.

2)

At setting N the value is stated according to EN 215, at XP = 2K i.e. the valve is closed at 2° C higher room temp erature.

At lower settings the XP value is reduced to 0.5K of the setting value 1. All values are max. flow at 0.1 bar.

3)

The value states the max. flow at maximum lift, i.e. at fully open valve at 0.1 bar.

10 l/h 15 l / h 20 l/h 35 l/h 50 l/h 80 l/h 100 l/ h 135 l/h

9 l/h 14 l/h 18 l/ h 30 l/h 45 l/h 70 l/h 90 l/h 130 l/h

2)

8 l/h 12 l/ h 16 l/h 25 l/h 40 l/h 65 l/h 85 l/h 110 l/ h

© Danfoss Climate Solutions | 03/2021 | AI373053774937en-000101

Datasheet VHS-DV Pressure independent radiator valve

Capacities

Max Flow VHS-DV

Sizing example

Required heat 700 W

Cooling across radiator 20 °C

700

Flow through radiator

Min. pressure for constant flow 0.1 bar

Valve setting* 4

*Alternatively the setting can be read directly in the table “Technical Data”.

Q =

20 x 1.16

= 30 l/h

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Datasheet VHS-DV Pressure independent radiator valve

Draining the Radiators

A B

Shut-off and draining

If the sensor element is removed temporarily
while the system is under pressure, it should be
replaced by an appropriate handwheel –
available from Danfoss - to ensure positive and
safe shut-off.
To drain the radiator, first unscrew and remove
the valve’s metal cover. Then firmly shut off the
return with an Allen key (see A).

Fix the drain fitting in position. Drain by turning
the square headed drain screw to the left (see B).

Please note:

The static pressure must not exceed 10 bar.
Not all radiator types can be drained.

Reverse flow:
Radiator not drained / Riser drained

Please note:

Not all water is removed by draining.

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© Danfoss Climate Solutions | 03/2021 | AI373053774937en-000101

Normal flow:
Radiator drained / Riser not drained

Datasheet VHS-DV Pressure independent radiator valve

Design

1. Regulator

2. Presetting Unit

3. Stuffing Box

4. Radiator G½

5. Self sealing connection cone G½

6. Sealing Cone G½

7. Shut off and drain unit

8. Radiator G¾

9. Self sealing connection cone G¾

VHS-DV Flow

VHS-DV Reverse

Materials in contact with water

Valve housing and other metal parts MS 58

O-rings EPDM & NBR

Springs Stainless Steel

Some insert and regulator components PPS

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Datasheet VHS-DV Pressure independent radiator valve

Dimensions

VHS-DV Straight

VHS-DV Angle

VHS-DV Straight with collar cover (RAX Sensor, at position 3)

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© Danfoss Climate Solutions | 03/2021 | AI373053774937en-000101

Datasheet VHS-DV Pressure independent radiator valve

VHS-DV Angle with collar cover (RAX Sensor, at position 3)

VHS-DV Straight with cover (RAX Sensor, at position 3)

VHS-DV Angle with cover (RAX Sensor, at position 3)

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Danfoss c an accept no respons ibility for pos sible errors in ca talogues, bro chures and other pr inted material. D anfoss reserve s the right to alter it s products with out notice. This al so applies to
produc ts already on ord er provided that s uch alterations ca n be made without su bsequential cha nges being nece ssary in speci cations alread y agreed.
All trade marks in this mate rial are proper ty of the respec tive companies . Danfoss and all Dan foss logotyp es are trademark s of Danfoss A/S. A ll rights reser ved.

Danfoss A/S

Heating Segment

Datasheet VHS-DV Pressure independent radiator valve

• heating.danfoss.com • [phone] • E-Mail: [e-mail]

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© Danfoss Climate Solutions | 03/2021 | AI373053774937en-000101