2 0277 09, 2 0277 00 - according to ÖNORM B1921, ISO 19458, DIN 38402, DVGW Worksheet W 551 and VDI 6023, low-spray, operating pressure max. 16 bar, max. permissible operating temperature 90°C.
2 0277 19, 2 0277 10 – as above, but long model for thermally-insulated valves so that the sampling valve is run out of the thermal insulation.