V1.2.
02.2014
•Subject
to
modification
9
V
2.0
. 0
5
.201
9
• Subject to modification
Safety notes
H2..S-..
Installation notes
Maintenance
Direction of flow
• This globe valve has been designed for use in stationary heating, ventilation and air-conditioning
systems and is not allowed to be used outside the specified field of application, especially in
aircraft or in any other airborne means of transport.
• It may only be installed by suitably trained personnel. All applicable legal or institutional
installation regulations must be complied with.
• The valve does not contain any parts that can be replaced or repaired by the user.
• The valve is not allowed to be disposed of as household refuse. All locally valid regulations and
requirements must be observed.
• The recognised rules should be applied when determining the flow characteristic of final
controlling elements.
Globe valves, 2-way, with internal thread
Product features
The globe valve is operated by an NV or SV series linear actuator. The linear actuators are
controlled by a standard modulating or -point control system and move the cone of the valve,
the throttling device, to the opening position dictated by the control signal.
An equal-percentage flow characteristic is produced by profiling the valve cone.
On the NV or SV linear actuator, the valve stem can be actuated manually using a hexagonal
key.
Mode of operation
Flow characteristic
Manual operation
Recommended mounting positions
Water quality requirements
The globe valve may be mounted either
vertically
or
horizontally
.
It is not permissible to mount the globe valve with the stem
pointing downwards.
• The water quality requirements specified in VDI 205 must be adhered to.
• The system must not be returned to service until the globe valve and the linear actuator have been
properly reassembled in accordance with the instructions and the pipework has been refilled in
the proper manner.
• Globe valves are relatively sensitive control devices. In order to ensure a long service life, it is
advisable to fit
strainers
.
• The globe valves and linear actuators are maintenance-free.
• Before any kind of service work is carried out on actuator sets of this type, it is essential to isolate
the linear actuator from the power supply (by unplugging the power lead). Any pumps in the part
of the piping system concerned must also be switched off and the appropriate isolating fittings
closed (allow everything to cool down first if necessary and reduce the pressure in the system to
atmospheric).
• The direction of flow, specified by an arrow on the housing, is to be complied with, since otherwise
the globe valve can be damaged.
Cold and hot water, Refrigerant (R12, R22, R14a, R202),
water with max. 50% volume of glycol, Hydrazine, Phosphate
0°C ... +10°C
2500kPa (PN25)
Control path A – AB: equal percentage (to VDI/VDE 217)
n(gl) = , optimised in the opening range
See «Type overview»
Max. 0.02% of kvs value
(DIN EN 149 and DIN EN 6054-4)
Internal thread to ISO 7/1
See «Type overview»
Up (▲)
Upright to horizontal (in relation to the stem)
Maintenance-free
Stainless steel SS04
Stainless steel SS04
Stainless steel SS04
Stainless steel SS04
EPDM O-Ring
See «Dimensions and weights»
A
AB
