Construction
The safety valve comprises:
• Housing with PN16 flanges per ISO7005-2, EN1092-2
• Pilot valve 66-300
• Control circuit with ball valves on inlet and outlet
• Control circuit with integral rinsable filter insert
Materials
• Ductile iron housing, cover plate and diaphragm plate
(ISO 1083), powder coated
• Red bronze/stainless steel regulating cone
• Stainless steel pressure spring and control rod
• Fibre-reinforced NBR diaphragm
• NBR and EPDM seals
• Stainless steel valve seat
• High quality synthetic material control circuits
• Brass compression fittings
• Brass pilot valve housing
EN0H-1336GE23 R0807 • Subject to change
• Stainless steel filter insert
SV300
Safety valve
Product specification sheet
Application
Safety valves of this type are controlled by the medium flowing
through it via a pilot valve.It is preferably installed in branches of
supply pipework and protects downstream parts of a system
which are at risk from unacceptable excess pressure which can,
for example, be caused by pumps.
If the inlet pressure to the valve rises up to the set opening pressure, then the valve opens immediately to the maximum flow
position. If the pressure falls to the set pressure, then the valve
closes slowly to prevent pressure shock loads.
Special Features
• High flow capacity
• Light weight
• Powder coated inside and outside - Powder used is physiologically and toxicologically safe
• Integral control circuit and ball valves
• No external energy required for operation
Range of Application
Medium Water
Operating pressure Max. 16 bar
Opening pressure 1 - 12 bar adjustable
Technical Data
Operating temperature
Nominal pressure PN 16
Minimum pressure 0.7 bar
Connection size DN 50 - 450
Max. 80 °C
PN 25 on request
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SV300 Safety valve
Method of Operation
Safety valves of this type limit the pressure in the pipework
because any over pressure in the pipework causes the valve to
open, which then balances the pressure. After rapid opening, the
valve then closes slowly to prevent pressure shock loads.
Options
SV300- ... A =Housing with flange, PN 16,
ISO 7005, EN 1092-2
SV300- ... Z = PN 25, on request
Connection size
Connection size DN 50 65 80 100 150 200 250 300 350 400 450
Weight approx.kg14 15 24 39 82 159 247 407 512 824 947
Dimensions (mm)
L
230
H
235
h
83
k
-value m3/h 43 43 103 167 407 676 1160 1600 1600 3300 3300
vs
292
294
93
310
400
100
350
433
110
480
558
143
600
650
173
730
823
205
850
944
230
980
990
260
1100
1250
290
1200
1250
310
68 www.honeywell.com
EN0H-1336GE23 R0807 • Subject to change
Installation Example
0
0
0
0
0
0
0
0
SV300 Safety valve
Installation Guidelines
• Fit a shutoff valve upstream of the safety valve
• Note flow direction (indicated by arrow)
• Ensure good access
o Simplifies maintenance and inspection
• Discharge pipework should be one size larger than the outlet
connection from the valve
• Install connectors for removal and refitting for maintenance
Flow Diagram
[m3/h]
10000
5000
1000
500
EN0H-1336GE23 R0807 • Subject to change
100
Typical Applications
Safety valves of this type, within the limits of their specification,
are suitable for installation in drinking water supply systems and
industrial installations, for example on the pressure side of a
booster pump which supplies a low lying zone, exceptionally high
flow rates for filling operations or to prevent excessive pressure
in normal operation of a system.
6,5 m/s 15 m/s
DN 45
DN 40
DN 35
DN 30
DN
25
DN 20
DN 15
DN 10
DN 80
DN 65
DN 50
50
0,5 1 105
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[
bar
]
SV300 Safety valve
Spare Parts
Safety valve SV300, from 2002 onwards
No. Description Dimension Part No.
2
1
valve
1 Replacement pilot
DN 50 - DN 450 CX-PS
2 Set of seals DN 50 0903750
DN 65 0903751
DN 80 0903752
bar
DN 100 0903753
DN 150 0903754
DN 200 0903755
DN 250 0903756
DN 300 0903757
DN 350 0903758
DN 400 0903759
2
DN 450 0903760
2
2
2
Automation and Control Solutions
Honeywell GmbH
Hardhofweg
D-74821 Mosbach
Phone: (49) 6261 810
Fax: (49) 6261 81309
http://europe.hbc.honeywell.com
www.honeywell.com
Manufactured for and on behalf of the
Environmental and Combustion Controls Division
of Honeywell Technologies Sàrl, Ecublens, Route
du Bois 37, Switzerland by its Authorised Representative Honeywell GmbH
EN0H-1336GE23 R0807
Subject to change without notice
© 2007 Honeywell GmbH
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