group nameHVAC Balancing Valve
Min Order1 set
modelSDP series
payment methodT/T
update timeMon, 14 Aug 2017 16:00:23 GMT
Size DN15~DN50
Temp -10℃~120℃
Pressure PN16
Connection Thread connection
Min Order1 set
The SUNFLU differential pressure control valve for a constant control of the set nominal value is a
proportional regulator which works without auxiliary energy.
Infinitely adjustable nominal value between 300 mbar and 700 mbar. The nominal value can be locked
and is visible from outside. With concealed isolating facility and with ball valve for draining and filling,
installation in the return pipe, oblique pattern model.
Valve disc with soft seal. Valve body, bonnet and regulator housing made on bronze, valve disc and
stem made of brass resistant to dezincification, O-rings, washer and diaphragm made of EPDM.
Installation of the regulator:
SUNFLU differential pressure control valve are installed in the return pipe. Installation is possible in any
position provided the direction of flow conforms to the direction of the arrow on the valve body. The
pipework has to be flushed thoroughly before installation of the differential pressure regulator. The
installation of an “Y” type strainer is recommended. The capillary should be fitted above or horizontal to
the supply pipe, to avoid blockage of the capillary by small particles, it should not be connected to the
supply pipe from underneath.
Pressure test of the installation only with the capillary being connected.
Operation of the manual isolation:
The SUNFLU differential pressure control valve can be closed off manually, e.g. for servicing the
system, and additionally acts as an isolating valve. To carry out manual isolation, remove locking screw
from the handwheel and close the valve with a 3 mm Allen key with the capillary of the upper chamber
of the diaphragm regulator being connected to the supply pipe.
Technical data:
Max.operating temperature : +120 °C Min.operating temperature : -20 °C
Max.operating pressure : 16 bar (PN 16)
Connection: Thread to EN 10226
Length of capillary: 1m
Differential pressure △P:300mbar - 700mbar
L (mm) | H (mm) | Kvs | |
DN15 | 80 | 158 | 2.5 |
DN20 | 84 | 160 | 5.0 |
DN25 | 97.5 | 163 | 7.5 |
DN32 | 110 | 172 | 10.0 |
DN40 | 120 | 178 | 15.0 |
DN50 | 150 | 210 | 34.0 |
Below are examples of installation:
Differential pressure control valve / Brass Balancing valve
Setting and automatic regulation of the differential pressure in a riser.
Condition: Calculation of the mass flow and the corresponding differential pressure in the riser which
shall be regulated.
Note: Simple setting of the required nominal value by turning the handwheel.
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