Honeywell SM110 Product specification sheet

EN0H-1366GE23 R0509 • Subject to change

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

SM110

Diaphragm safety valve for closed heating systems

Product specification sheet

Application

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.

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

The membrane safety valve is only suitable to drain the following media from closed heating systems according to EN 12828 for protection against exceeding pressure

Medium	Water or glycol-water mixture,
	according to VDI 2035
	Liquids of the fluid group 1 and 2 (pres-
	sure 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 1.5, 2.0, 2.5, 3.0, 4.0 or
	6.0 bar
	Subsequent alteration of the setting is not
	permitted and is impossible without
	destroying the security cap
Operating temperatureMax. 120 °C
Connection size	Internal thread on inlet 1/2", 3/4",
	Internal thread on outlet 1/2", 3/4", 1"

External thread on inlet 1/2" with internal thread on outlet 3/4"

Valve size is defined by the size of the inlet connection

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SM110 Diaphragm safety valve

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

RAustritt

taken as 0.6 bar minimum.

valve. For valves rated up to 3.0 bar, the closing pressure can be

Options

OS.-No.

Set pressureConnection

Connection

size Inlet

size Outlet

SM110- 1/2ZA2.5

2.5 bar

Rp1/2" IG

REintritt

SM110- 1/2ZA3.0

3 bar

Rp1/2" IG

SM110- 1/2A1.5

1.5 bar

Rp1/2" IG

Rp3/4" IG

SM110- 1/2A2.0

2.0 bar

Rp1/2" IG

Rp3/4" IG

SM110- 1/2A2.5

2.5 bar

Rp1/2" IG

Rp3/4" IG

SM110- 1/2A3.0

3.0 bar

Rp1/2" IG

Rp3/4" IG

SM110- 1/2A4.0

4.0 bar

Rp1/2" IG

Rp3/4" IG

SM110- 1/2A6.0

6.0 bar

Rp1/2" IG

Rp3/4" IG

SM110- 3/4ZA2.5

2.5 bar

Rp3/4" IG

SM110- 3/4ZA3.0

3.0 bar

Rp3/4" IG

SM110- 3/4A1.5

1.5 bar

Rp3/4" IG

Rp1" IG

SM110- 3/4A2.5

2.5 bar

Rp3/4" IG

Rp1" IG

SM110- 3/4A3.0

3.0 bar

Rp3/4" IG

Rp1" IG

SM110- 3/4A4.0

4.0 bar

Rp3/4" IG

Rp1" IG

SM110- 1/2AA1.5

1.5 bar

Rp1/2" AG

Rp3/4" IG

SM110- 1/2AA2.0

2.0 bar

Rp1/2" AG

Rp3/4" IG

SM110- 1/2AA3.0

3.0 bar

Rp1/2" AG

Rp3/4" IG

Connection size Inlet

1/2" IG

3/4" IG

1/2" IG

3/4" IG

1/2" AG

Connection size Outlet

1/2" IG

3/4" IG

1" IG

3/4" IG

Dimensions

(mm)

Weight

135

145

140

150

140

Maximum permissible heat input (kW)

100

TÜV Approval Nos.

TÜV · SV · ..* - 2017 · 13 · H · 2,5bar

TÜV · SV · ..* - 2017 · 13 · H · 3bar

..* valid Approval No.

Only the products with an outlet diameter larger than the inlet diameter are TÜV-certified.

EN0H-1366GE23 R0509 • Subject to change

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