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0537EN November 2022

Boiler room components

MeMbrane safety valves

r140, r140M

R140

R140M

Description

The Giacomini safety valves of the R140, R140M range are used to avoid

overpressure on the heat generators of the heating system, domestic water

system (protecting the hot water accumulation) and water systems (cold

water drainage). The valves comply with Directive "PED" 2014/68/UE.

Versions and product codes

Series

Product code

Connections

Calibration pressure [bar]

R140

R140Y001

G 1/2"F x G 1/2"F

1,5

R140Y002

2,5

R140Y003

3

R140Y005

3,5

R140Y006

4

R140Y007

4,5

R140Y008

5

R140Y009

6

R140Y010

7

R140Y011

8

R140Y013

10

R140Y020

G 3/4"F x G 3/4"F

2

R140Y021

1,5

R140Y022

2,5

R140Y023

3

R140Y025

3,5

R140Y026

4

R140Y027

4,5

R140Y028

5

R140Y029

6

R140Y031

8

R140Y032

10

R140Y040

G 1"F x G 1"F

2

R140Y042

2,5

R140Y043

3

R140Y045

3,5

R140Y046

4

R140Y047

4,5

R140Y0468

5

R140Y049

6

R140Y051

8

R140Y052

10

R140Y062

G 1-1/4"F x G 1-1/4"F

2,5

R140Y063

3

R140Y065

3,5

R140Y066

4

R140Y067

4,5

R140Y068

5

R140Y069

6

R140M

R140MY003

G 1/2”M x G 1/2"F

3

Technical data

• Fluids: hot water, cold water, air

• Min. allowable temperature (Ts min): 5 °C

• Max. allowable temperature (Ts max): 110 °C

• Max. allowable pressure (Ps): 10 bar

• Open overpressure 20%

• Closure range 20%

• PED cat.: IV

Materials

• Body: brass UNI EN 12165 CW617N

• Membrane: EPDM

• Stem: copper

• Separator: brass UNI EN 12164 CW617N

• Gasket: vegetable fiber

• Spring: steel

• Spring presser: brass UNI EN 12164 CW617N

• Bonnet: brass UNI EN 12165 CW617N

• Knob: POM

Operation

The safety valves are used in hot water thermal systems with a closed

expansion tank, to ensure that the pressure of the fluid in the heat generator

does not exceed the project limits; when the thrust of the pressurised fluid

triggers a return spring on the shutter, the valve discharges a specific amount

of fluid to prevent the defined pressure level from being exceeded, and then

re-closes within the permitted closure range. They can also be used to drain

off cold water in water systems. They are factory-calibrated and the drainage

pressure value cannot be altered.

Installation

Before installing any safety valve, the technical personnel in charge of the

system must size it correctly, in accordance with the current regulations.

The safety valves must be installed in the highest part of the heat generator,

or on the delivery pipe, no more than 1m from the generator. They must be

clearly visible and easy to check. The pipe connecting the safety valve to the

generator must be free of any interception and with a diameter no less than

that of the valve itself. The safety valve drainage must be clearly visible and

channelled into a pipe with a diameter no less than that of the valve itself,

using a funnel (R141 or R141C) if necessary.

Warning.

The safety valves can be assembled vertically or horizontally, but not

upside down (to prevent system impurities from settling); respect the

flow direction indicated by the arrow on the body.

Generatore di calore

Boiler

Generatore di calore

Boiler

Generatore di calore

Boiler

Generatore di calore

Boiler

Generatore di calore

Boiler

Generatore di calore

Boiler

Generatore di calore

Boiler

Generatore di calore

Boiler

Generatore di calore

Boiler

Max. 1m

Generatore di calore

Boiler

R141

0425

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CONFORMITY DECLARATION

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to view the conformity declaration.