Honeywell SM150 Product specification sheet
Construction
The safety valve comprises:
• Angled housing
• Adjustment spring
• Diaphragm
• Security cap with part label
Materials
• Brass housing
• Spring steel adjustment spring
• High grade synthetic material security cap
• Hot water resistant elastomer diaphragm
SM150
Diaphragm safety valve
for closed heating systems
Product specification sheet
Application
Membrane safety valves of this type are used to protect closed
hot drinking water systems according to DIN 1988 and DIN
4753-1.
In accordance with statutory requirements, the diaphragm safety
valve is preset to the required fixed set pressure by the manufacturer and is sealed with an embossed security cap marked with
the test badge and pressure rating to prevent unauthorised
tampering with the setting. Subsequent alteration of the setting is
not permitted and is impossible without destroying the security
cap. The preset pressure is embossed on the security cap.
Special Features
• Meets KTW recommendations for potable water
• Certified to Pressure Equipment Directive 97/23/EC, Reference No. CE 0036
• Standardised discharge connection
• With lifting device
• Protected against subsequent changing of the default
settings
Range of Application
The membrane safety valve is only suitable to drain drinking water
from closed hot drinking water systems according to DIN 1988
and DIN 4753-1 for protection against exceeding pressure
Medium Water
Technical Data
Installation position Horizontal with safety cap pointing up
Opening pressure Factory preset to 6.0, 8.0 or 10.0 bar
Subsequent alteration of the setting is not
permitted and is impossible without
destroying the security cap
Operating temperature
Connection size Internal thread on inlet
Max. 95 °C
1
/2", 3/4",
Internal thread on outlet
Valve size is defined by the size of the inlet
connection
1
/2", 3/4", 1"
GE0H-1367GE23 R0609 • Subject to change
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SM150 Diaphragm safety valve
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Method of Operation
Diaphragm safety valves of this type are directacting safety
valves in which the disc is pushed up by the pressure from the
system against a spring which is holding the valve closed. If the
opening force exceeds the force exerted by the spring, then the
valve disc is lifted off the valve seat and the valve discharges the
medium. In accordance with the requirements of the standard,
the full discharge capacity of the valve will be achieved when the
system pressure climbs to no more than 10% above the set
pressure of the valve. Full shutoff must be achieved if the system
pressure falls to below 80% of the nominal set pressure of the
valve. For valves rated up to 3.0 bar, the closing pressure can be
ROutlet
taken as 0.6 bar minimum.
Options
OS.-No. Set pres-
sure
SM150- 1/2ZA 6.0 bar Rp
SM150- 1/2ZB 8.0 bar Rp
SM150- 1/2ZC 10.0 bar Rp
SM150- 1/2A 6.0 bar Rp
SM150- 1/2B 8.0 bar Rp
SM150- 1/2C 10.0 bar Rp
SM150- 3/4ZA 6.0 bar Rp
SM150- 3/4ZB 8.0 bar Rp
SM150- 3/4ZC 10.0 bar Rp
SM150- 3/4A 6.0 bar Rp
SM150- 3/4B 8.0 bar Rp
SM150- 3/4C 10.0 bar Rp
Connection size
Inlet
1
/2" IG Rp1/2" IG
1
/2" IG Rp1/2" IG
1
/2" IG Rp1/2" IG
1
/2" IG Rp3/4" IG
1
/2" IG Rp3/4" IG
1
/2" IG Rp3/4" IG
3
/4" IG Rp3/4" IG
3
/4" IG Rp3/4" IG
3
/4" IG Rp3/4" IG
3
/4" IG Rp1" IG
3
/4" IG Rp1" IG
3
/4" IG Rp1" IG
Connection size
Outlet
Connection size Inlet R
Connection size Outlet R
1
/2" IG
1
/2" IG
3
/4" IG
3
/4" IG
1
/2" IG
3
/4" IG 1" IG
3
/4" IG
Dimensions (mm)
62
36
46
∅ D
H
o
T
60
33
32
62
33
46
60
33
46
Weight g 135 145 140 150
For water heaters with capacity (litres) up to 200 up to 1000 up to 200 up to 1000
Maximum permissible heat input (kW) 50 100 50 100
TÜV Approval Nos. - - TÜV · SV · ..* - 2017· 13 · W · p
..* valid Approval No.
Only the products with an outlet diameter larger than the inlet diameter are TÜV-certified.
GE0H-1367GE23 R0609 • Subject to change
2 www.honeywell.com
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