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The N.G.D pneumatically actuated valve is a piston
type, hydrostatically balanced valve, which utilises the valve's shuttle
as an actuator for all valve sizes at any pressure rating. There is no
external actuator. The valve is controlled by standard pneumatic pilot
valves and is very reliable.
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The N.G.D pneumatically actuated valve is used in
general as a line-isolating valve and can be operated locally and/or
remotely. When utilising flow or pressure switches, the valve can also be
used as a safety shutdown, pressure control or flow control valve.
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