Honeywell SG150 Product specification sheet

SG150

Safety group

with interchangeable safety valve insert

Product specification sheet

Application

Safety groups of this type are used to protect pressurised water heaters according to the requirements of DIN 4753, Part 1, DIN 1988 and DIN EN1488.

They are compact appliances which incorporate all the necessary safety devices such as check valve, shutoff valve, test point and diaphragm type safety valve in one unit.

The safety valve protects the downstream cylinder, pressure vessel etc. by automatically opening when excess pressure occurs. The check valve prevents back pressure, backflow and back syphonage of water from the hot water unit.

Special Features

• DVGW-approval requested

• Fully approved for noise level protection to class 1

• Replacement insert tested to TRD 721

• Easy venting

• Meets KTW recommendations for potable water

Construction

The safety group comprises:

• Housing with test socket G

• Connections (versions AA, AB and AC)

• Shutoff valve

• Check valve cartridge

• Approved safety valve exchange insert

• Drain connector

• Insulation shells

• Pressure gauge optional

Materials

• Dezincification resistant brass housing

• Brass threaded connections

• Cut-off valve, test socket, plug-in backflow stopper, safety valve replacement set and flow-guide made of high-quality plastic

• Fibre-reinforced NBR diaphragm

• NBR seals

EN0H-1355GE23 R1007 • Subject to change

• EPP insulation shells

/4"

Range of Application

For closed hot water storage units up to 200 litres according to DIN 4753 Part 1 and DIN 1988. Tested to TRD 721 for 1.0 to 10.0 bar pressure range.

Medium Water Operating pressure Maximum at least below 20 % opening

pressure of safety

Technical Data

Installation position Horizontal and vertical Opening pressure Set by manufacturer at 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

Max. 40 °C

/2" + 3/4"

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SG150 Safety group

Method of Operation

Safety groups of this type combine check valve, shutoff valve, test point and diaphragm type safety valves in one appliance. Flow first passes through the check valve and this flow holds the valve disc in the open position against the force of a spring.

The downstream safety valve is a direct operating safety valve. That is, the opening force operates against the force of a spring.

The shutoff valve enable the check valve to be checked and serviced.

Options

SG150- ... AA = With threaded male connections, 6.0 bar SG150- ... AB = With threaded male connections, 8.0 bar SG150- ... AC = With threaded male connections, 10.0 bar SG150- ... EA = Without fittings, set pressure 6.0 bar SG150- ... EB = Without fittings, set pressure 8.0 bar SG150- ... EC = Without fittings, set pressure 10.0 bar

Connection size

Connection size R Weight Version A

approx. kg 0.7

Version E

/2"

0.55

/4"

0.9

0.67 Funnel outside-ø (mm) D 40 40 Dimensions (mm)

L l

165

124

186

132

For water heaters with capacity (litres)

200 200 Safety valve Approval numbers

TÜV · SV · ..*2 - 700 · (

TÜV · SV · ..* - 617 · (1/2", 3/4") · W · p (8, 10 bar)

/2", 3/4") · W · p (6 bar)

DIN/DVGW Approval No. requested ..* valid Approval No.

Accessories

M08M Pressure gauge

Housing ∅ 50 mm, connecting pin above G Partition: 0-16 bar

D150 Pressure reducing valve

Pressure reducer D150-1/2 for completion of the

M08M

safety group SG 150 with connection size 1/2”

D160S Pressure reducing valve

Pressure reducer D160S-3/4 for completion of the safety group SG 150 with connection size 3/4“

D150/D160S

VST06-A Connection set

Threaded connections

/4"

VST06-A

2 www.honeywell.com

VST06-B

VST06-B Connection set

Solder connections

EN0H-1355GE23 R1007 • Subject to change

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