Viega guarantees that unpressed connections are visible during a
leakage test:
nwith dry leakage test in the pressure range from 22 hPa–0.3 MPa
(22 mbar–3.0 bar)
2.2.3 Sealing elements
The gas meter threaded connections are equipped with nyhalit seals.
The seals are higher thermal resistant (HTR).
The nyhalit seals may only be used once. The seals in the
meter threaded connections must be exchanged when
replacing a gas meter (model G2932).
The press connections are factory-fitted with yellow HNBR sealing ele-
ments.
Use Gas installation Liquid gas installation
Operating tempera-
ture
-20 °C up to +70 °C -20 °C up to +70 °C
Operating pressure ≤0.5 MPa (5 bar)
(MOP 5)
≤0.1 MPa (1 bar)
(HTR / GT1)2)
≤0.5 MPa (5 bar)
(MOP 5)1)
≤0.1 MPa (1 bar)
(HTR / GT1)2)
1) Maximum pressure – equates to the pick-up pressure of the SAV in
the pressure regulating valve
2) Operating pressure at HTR requirement max. 0.1 MPa (1 bar) (GT1)
In acc. with DIN EN 331 the scope of the operating temperature is
between -20 °C and max. +60 °C.
2.2.4 Markings on components
The press connections are marked with a coloured dot. This identifies
the SC-Contur, where the test medium would escape in the case of an
inadvertently unpressed connection.
The model is marked as follows:
nMOP5 for maximum operating pressure 0.5 MPa (5 bar)
nGT1 for operating pressure with HTR requirement max. 0.1 MPa
(1 bar)
nFlow direction indicator
nDWGW writing
Product information
Profipress G mounting unit 9 from 19
