Temperature safety relief valve
543 series
General description
Temperature safety relief valves are manufactured by Caleffi S.p.A. in
compliance with the essential requirements contained in Directive
97/23/EC of the European Parliament and of the Council of the
European Union to harmonise member state regulations on pressure
equipment.
Function
The temperature safety relief valves limit the temperature of water
in multi-fuel or solid fuel boilers with either a boiler incorporated or
an emergency heat exchanger.
When the temperature reaches 95°C, the valve starts to discharge
the necessary amount of water to keep the boiler temperature
within the safety limits.
Its use is specified by I.S.P.E.S.L. regulations (collection “R” - pub-
2005), it complies with EN 14597 and can be used on systems that
comply with EN 12828, relating to solid fuel boilers with a power
output of less than 100 kW.
Technical specification
Materials:
Body:
brass EN 12165 CW617N, chrome plated
Control spindle:
brass EN 12164 CW617N
Obturator seal:
EPDM
Seals: EPDM
Spring: stainless
steel
Protection cover:
POM
Performance:
Max. working pressure:
10 bar
Set temperature:
95°C
Temperature range:
5–110°C
Discharge flow rate at 110°C and
Δ
p 1 bar:
3000 l/h
Ambient temperature range:
0–80°C
Action type (EN 14597):
2 KP
Max. temperature of the sensor:
130°C
Medium: water
PED category:
IV
Connections:
3/4” F x 3/4” F
Probe connection:
1/2” M
Capillary length:
1300 mm
Dimensions
CALEFFI
Product range
Code
543
513
Temperature safety relief valve
Size 3/4”
01057/07 GB
replaces dp 01057/05
R
E
G
I STERE
D
BSI EN ISO 9001:2000
Cert. n
°
FM 21654
UNI EN ISO 9001:2000
Cert. n
°
0003
A
3/4”
B
Ø 40
C
42
D
86
E
Ø 42
F
70
Code
543
513
Weight (kg)
1,06
D
A
B
A
C
E
F
1/2”
197
111
5
