Honeywell SM180 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
SM180
Diaphragm safety valve
for solar systems
Product specification sheet
Application
The membrane safety valves of this type are used as last safeguard for solar systems when the stipulated control and safety
devices fail. They must therefore be capable to discharge the
entire boiler output as steam in case of emergency.
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
• 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
To protect closed solar systems.
Medium Water or glycol-water mixture,
according to VDI 2035
Liquids of the fluid group 1 and 2 (pressure device
guideline, item 9) which do not affect the materials
used.
Technical Data
Installation position Horizontal with safety cap pointing up
Opening pressure Factory preset to 2.5, 3.0, 4.0, 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 -20 °C...+160 °C
Connection size Internal thread on inlet
Internal thread on outlet
Valve size is defined by the size of the inlet connection
1
/2", 3/4",
1
/2", 3/4", 1"
EN0H-1368GE23 R0609 • Änderungen vorbehalten
www.honeywell.de/haustechnik 1
SM180 Diaphragm safety valve
∅ D
o
H
REintritt
T
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
RAustritt
taken as 0.6 bar minimum.
Options
OS.-No. Set pres-
sure
SM180- 1/2ZA2.5 2.5 bar Rp
Connection size
Inlet
1
/2" IG Rp1/2" IG
Connection size
Outlet
SM180- 1/2ZA3.0 3.0 bar Rp1/2" IG Rp1/2" IG
1
SM180- 1/2ZA4.0 4.0 bar Rp
SM180- 1/2ZA6.0 6.0 bar Rp
/2" IG Rp1/2" IG
1
/2" IG Rp1/2" IG
SM180- 1/2ZA8.0 8.0 bar Rp1/2" IG Rp1/2" IG
1
SM180- 1/2ZA10.0 10.0 bar Rp
SM180- 1/2A2.5 2.5 bar Rp
/2" IG Rp1/2" IG
1
/2" IG Rp3/4" IG
SM180- 1/2A3.0 3.0 bar Rp1/2" IG Rp3/4" IG
1
SM180- 1/2A4.0 4.0 bar Rp
SM180- 1/2A6.0 6.0 bar Rp
/2" IG Rp3/4" IG
1
/2" IG Rp3/4" IG
SM180- 1/2A8.0 8.0 bar Rp1/2" IG Rp3/4" IG
1
SM180- 1/2A10.0 10.0 bar Rp
SM180- 3/4ZA2.5 2.5 bar Rp
/2" IG Rp3/4" IG
3
/4" IG Rp3/4" IG
SM180- 3/4ZA3.0 3.0 bar Rp3/4" IG Rp3/4" IG
3
SM180- 3/4ZA4.0 4.0 bar Rp
SM180- 3/4ZA6.0 6.0 bar Rp
SM180- 3/4ZA8.0 8.0 bar Rp
/4" IG Rp3/4" IG
3
/4" IG Rp3/4" IG
3
/4" IG Rp3/4" IG
SM180- 3/4ZA10.0 10.0 bar Rp3/4" IG Rp3/4" IG
3
SM180- 3/4A2.5 2.5 bar Rp
SM180- 3/4A3.0 3.0 bar Rp
/4" IG Rp1" IG
3
/4" IG Rp1" IG
SM180- 3/4A4.0 4.0 bar Rp3/4" IG Rp1" IG
3
SM180- 3/4A6.0 6.0 bar Rp
SM180- 3/4A8.0 8.0 bar Rp
SM180- 3/4A10.0 10.0 bar Rp
/4" IG Rp1" IG
3
/4" IG Rp1" IG
3
/4" IG Rp1" IG
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
Maximum permissible heat input (kW) 50 100 50 100
TÜV Approval Nos. - - TÜV · SV · ..* - 2017 · 13 · SOL · p
..* valid Approval No.
Only the products with an outlet diameter larger than the inlet diameter are TÜV-certified.
2 www.honeywell.de/haustechnik
EN0H-1368GE23 R0609 • Änderungen vorbehalten
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