Data Sheet
VHS-E Valves for One-Pipe Parallel and BaseConnection Radiators
Application
VHS-E straight VHS-E angle
System Layout
The VHS-E is the ideal control valve for modern
base-connection radiators, as well as for universal
or bathroom radiators with connection distances
of 50 mm between flow and return.
VHS-E for one-pipe systems has a fixed radiator
share of 40% volume and can be used with all
Danfoss sensors and thermal actuators with
RA2000 connection.
To avoid back flow in one-pipe systems,
installation of a back flow restrictor (003L0296) is
recommended.
To avoid the occurrence of scale and corrosion in
the system, the composition of the heating water
should comply with VDI guidelines 2035.
To ensure an appealing finish different types of
valve covers are available.
In white ABS material (RAL 9010), suitable for wet
lacquering or in black PPO, suitable for
electrostatic powder lacquering. Enclosure
designed for towel dryers with angled valves.
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Data Sheet VHS-E Valves for One-Pipe Parallel and Base-Connection Radiators
Data and Ordering
Type
Angular Straight
Angular Straight
Technical data
Connection (ISO 228-1)
Radiator System
G½
G¾A 013G4694
G½ 013G4691
G 3/4 A 1.2
G¾A 013G4693
2)
1)
k
vs
Code no.
013G4692
Max. water temperature 120 °C
Recommended differential pressure 0.05-0.2 bar
Max. technical differential pressure 0.6 bar
Testing pressure 16 bar
Max. operating pressure 10 bar
1)
The kv-value represent the flow volume (Q) in m³/h at a pressure drop (Δp) through the valve of 1 bar.
Max. flow volume (Q) through the radiator is approx. 40 %.
2)
The stated maximum technical differential pressure indicates the limit for maintaining optimum
control. For low-noise operation, system differential pressures should be held within the recommended
range. Pumps should never be oversized; select those that generate just sufficient pressure to circulate
the required volume of water.
From experience, a differential pressure of 0.05-0.2 bar across the valve is adequate in most systems. In
systems where it is too high, a Danfoss differential pressure regulator can be used to reduce it.
3)
If sensors of the types RAW, RAS or RAE with remote setting unit is used, the P-band increases by a
factor of 1.6. Manufacturer's value ia at "N" setting.
Accessories
Product Code no.
Cover* for VHS valve for panel radiators, straight pattern
White RAL 9016, suitable for wet lacquering**
Cover* for VHS avlve for panel radiators, angle pattern
White RAL 9016, suitable for wet lacquering**
Cover* for VHS valve for towel rail radiators, straight pattern
White RAL 9010, suitable for wet lacquering**
Cover* for VHS valve for towel rail radiators, straight pattern
White RAL 9016, suitable for wet lacquering**
Cover* for VHS valve for towel rail radiators, angle pattern
White RAL 9010, suitable for wet lacquering**
Cover* for VHS valve for towel rail radiators, angle pattern
White RAL 9016, suitable for wet lacquering**
013G4774
013G4775
013G4672
013G4674
013G4671
013G4673
Cover for VHS valve, straight pattern, chrome 013G4780
Cover for VHS valve, angle pattern, chrome 013G4779
Enclosure* for VHS valve for towel rail radiators, angle pattern
White RAL 9010, suitable for wet lacquering**
Enclosure* for VHS valve for towel rail radiators, angle pattern
White RAL 9016, suitable for wet lacquering**
013G4751
013G4755
Sealing cone incl. seal for valve radiator with 3/4" ext. thread (20 pcs.) 003L0294
Self-sealing connection nipple for valve radiator with G½ int. thread (20
pcs.)
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003L0295
Data Sheet VHS-E Valves for One-Pipe Parallel and Base-Connection Radiators
Double rosette (PVC) for pipe diameter Ø 12-24 mm (min. distance 50 mm) 192H0161
Manual handwheel for all RA type valves (valve diff. pressure max. 0.6 bar) 013G5002
Draining the Radiators
Fill-and-drain fitting, not nickel-plated, with 3/4" ext. thread and hose
nozzle
Connection bracket for sensors without snap-lock connection (10 pcs.) 013G4925
Cover for VHS, nickel-plated 003L0153
*Requires a sensor with snap-lock.
**Guidelines for lacquering are enclosed in the
product carton.
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).
003L0152
VHS is suited for connection of copper, soft steel,
PE-X plastic and aluminium alloys. Connection is
made with the help of Danfoss clamping joints.
A B
Design
1. Radiator
2. Sealing cone
3. Valve insert, presettable, type RA-UN
4. Stuffing box
5. Draining screw for rising pipe
6. Block-off/drain of return
7. Connection nipple (self-sealing)
8. Flat packing
Materials used for parts in water contact
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Data Sheet VHS-E Valves for One-Pipe Parallel and Base-Connection Radiators
Valve housing and other metal parts Ms 58
O-rings EPDM
Dimensions
VHS straight pattern
1/2" or 3/4" radiator connection
VHS angle pattern
1/2" or 3/4" radiator connection
Covers are shaded grey.
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Data Sheet VHS-E Valves for One-Pipe Parallel and Base-Connection Radiators
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Data Sheet VHS-E Valves for One-Pipe Parallel and Base-Connection Radiators
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Data Sheet VHS-E Valves for One-Pipe Parallel and Base-Connection Radiators
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Data Sheet VHS-E Valves for One-Pipe Parallel and Base-Connection Radiators
Danfoss A/S
Heating Solutions
Haarupvaenget 11
8600 Silkeborg
Denmark
Phone:+45 7488 8000
Fax: +45 7488 8100
Email: heating.solutions@danfoss.com
www.heating.danfoss.com
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective
companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
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