Valve actuators are supplied as standard with plated carbon steel seat assemblies fitted with nitrile
rubber seating discs.
If valves are required to be used on bio, producer or other corrosive gases, the valve seat assemblies
will be manufactured in 321 stainless steel with viton seating discs.
Installation
Select a location where the ambient temperature will be within the range of 0°C to +50°C, ensure
that the gas supply pipework is clean and contains no loose particles, fit valve to pipework so that
the gas flow travels in the direction of the arrows on the valve casing.
Please note that the 40, 50, 65, 80 and 100 mm N.B. valve bodies should be mounted with the inlet
flange facing vertically downwards. The 125 mm. N.B. valve body has an adjustable inlet flange
section that can be rotated to face in various directions
Due to the size and weight of the 100mm N.B. Unibloc, it is recommended that after installation
in the gas pipework the valve body is supported using the hole drilled in the valve body rib.
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