User guide

16-2
Safety Controls
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Safety Controls
Membrane safety valves of this type are used to protect closed heating systems according to EN
12828.
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.
with 1/2" internal threads on inlet and outlet
with 1/2" internal threads on inlet and 3/4" on outlet
with 3/4" internal threads on inlet and outlet
with 3/4" internal threads on inlet and 1" on outlet
with 1/2" external threads on inlet and 3/4" internal threads on outlet
Diaphragm safety valve for closed heating systems, SM110
Approvals Certified to Pressure Equipment Directive 97/23/EC, Refe-rence
No. CE 0036
Media • 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.
Materials Brass housing; spring steel adjustment spring; high grade
synthetic material security cap; hot water resistant elastomer
diaphragm
Mounting position horizontal
Max. media temperature 120
o
C
Additional description • Opening pressure factory preset to 1.5, 2.0, 2.5, 3.0, 4.0 or 6.0
bar
• Standardised discharge connection
• With lifting device
• Protected against subsequent changing of the default settings
Set pressure (bar) Port connection type Type
2,5 internal threads SM110-1/2ZA2.5
3 internal threads SM110-1/2ZA3.0
Set pressure (bar) Port connection type Type
1,5 internal threads SM110-1/2A1.5
2 internal threads SM110-1/2A2.0
2,5 internal threads SM110-1/2A2.5
3 internal threads SM110-1/2A3.0
4 internal threads SM110-1/2A4.0
6 internal threads SM110-1/2A6.0
Set pressure (bar) Port connection type Type
2,5 internal threads SM110-3/4ZA2.5
3 internal threads SM110-3/4ZA3.0
Set pressure (bar) Port connection type Type
1,5 internal threads SM110-3/4A1.5
2,5 internal threads SM110-3/4A2.5
3 internal threads SM110-3/4A3.0
4 internal threads SM110-3/4A4.0
Set pressure (bar) Port connection type Type
1,5 internal and external threads SM110-1/2AA1.5
2 internal and external threads SM110-1/2AA2.05
3 internal and external threads SM110-1/2AA3.05