Building valves. Frost resistant taps for outdoor use (FRT). General technical specification

Building valves. Frost resistant taps for outdoor use (FRT). General technical specification

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1   Scope

This document specifies:
  • — general construction, performance and material requirements for Frost Resistant Taps for outdoor use (FRT), PN 10.
  • — the application in the potable water installation with a static pressure of maximum 1,0 MPa (10 bar) and a distribution temperature of maximum 25 °C (PWC).
FRT valves shall consist of the 3 areas shown in Figure 1.
The conditions of use are according to the following Table 1.
Figure 1 — The different areas of FRT
001
1 indoor area
2 area in the wall
3 outdoor area
Table 1 — Conditions of use
Supply Dimension Operating Range
Pressure DN 15
to
DN 20
 recommended limits
Pressure static — max. ≤ 1,0 MPa (10,0 bar)
Pressure dynamic 0,1 to 0,5 MPa (1 to 5 bar) ≥ 0,05 MPa (0,5 bar)
Temperature cold — PWC ≤ 25 °C
The requirements with regard to the potable water quality are specified in national regulations.