Caleffi 532 Serie Installation Seite 3

Safety relief valve
General
Safety (pressure relief) valves are made by Caleffi S.p.A. in compliance with
the essential safety requirements laid down by Directive 2014/68/UE of the
European Parliament and the Council of the European Union for harmonisation
of member States with regard to pressurised equipment. The instructions given
below are in compliance with Article 3.4, Appendix 1 of Directive 2014/68/UE
and are supplied with the products when offered for sale on the market.
TÜV Approval
with larger outlet according to TRD 721
VdTUV Standard for Safety Valves SV100
Technische Eigenschaften
Body:
Controll knob:
Opturator seal:
Nominal pressure:
Temperature range:
Medium:
PED Category:
Connections:
Settings pressure:
Suitable for closed heating systems according to EN 12828 using a membrane expansion vessel.
For settings over 3 bar, the valves are CE certified.
Installation
Diaphragm safety valves should be installed vertically or orizzontally, in line with the direction of the
arrow. The discharge must be facing horizontally downwards. The connecting pipework should be
a maximum of 1 m long without any bends. Filters and other restrictions should be avoided in the
connecting pipework to the solar safety valve. The cross section of the connecting pipe must be at
least equal to the inlet cross-section of the safety valve. Horizontal connections should be avoided,
to prevent the build up of dirt and debris. These safety valves should be installed in the boiler
room, and must be accessible. Valve efficiency must not be compromised or made ineffectual by
barriers. It is also important to make sure that the valves are connected to the highest point of the
heat generator, or to the flow pipe right next to the boiler. The diameter of the discharge pipework
must correspond to the valve outlet diameter; the maximum length should not exceed 2 m, and not
more than two bends are permitted. If these maximum values are unavoidably exceeded (2 bends,
2 m of piping), the next diameter up must be selected for the discharge pipework. However, on no
account are more than 3 bends and 4 metres of pipework permitted. If the discharge piping of the
safety valve is connected via a tundish, the cross-section of the valve discharge pipework should
be at least double the cross section of the valve discharge itself.
www.caleffi.com
532. series
EN 12165CW 617N, chrome plated
Water/glycol solution, max. 30 %
inlet 1/2"; discharge 3/4"
EN
0000014051
ABS
EPDM
PN10
5–120 °C
IV
2,5 - 3 bar