LGM 30 - Mark
The LGM 30 - Mark III continues
the tradition of the original Mark II. 25 years of experience
were incorporated into the design and development of this
continuous run control.
The Mark III combines all components
required for a continuous run compressor application: the
pilot valve, the vent valve, and the check valve. Since the
Mark III is a "vent" unloader, built-in compressor
head unloaders are not required.
The compact size and straight-through flow
design of the Mark III make installation easy. Simply install the Mark III into
the air receiver, and attach the compressor discharge line to the valve inlet. The Mark
III is suitable for compressors of up to 30 SCFM delivery.
Cut-in and cut-out pressure settings are factory set
to customer specifications. Minimum cut-out pressure is 250 PSI. If no setting is
specified, the valve is set at our standard setting of 115 PSI cut-out and 95 PSI cut-in.
The valve is also field adjustable.
Details of construction include a forged brass
body, zinc-plated steel internal components, fluorocarbon piston ring, stainless steel
springs, and a glass-filled fluropolymer check valve poppet.
Options include a 1/8" NPT tapped port for
throttle control of a gas engine, a lockout clip for "dual control" applications,
a special 1/8" NPT tapped port for pressure switch unloader valve, a vent port muffler,
and a toggle unloading lever for one-hand warm up control. Vibra-Seal® pre-applied thread
sealant is also available on external inlet pipe threads.