| Conval's
engineering team combined four WHISPERJET Assemblies with four stop
valves to create a binary throttling system. Individually the valves
are never throttled but, by opening combinations of valves, any
required flow rate can be achieved. For greater precision, WHISPERJET
Valves of varying size can be combined such that a linear control
curve is approximated.
The
QUADFLOW Valve was designed to eliminate these problem areas:
Seat
Erosion
Severe service combined with conventional throttling led to limited
valve trim life and frequent maintenance.
Actuation
High ambient temperature and tight physical space turned conventional
air operators into high failure problems. Large heavy actuators
required additional support and vibration dampening.
Packing
While heavy cycling demands require frequent packing adjustments,
high ambient temperature and tight access space prevent maintenance
efforts.
Noise
High noise levels resulted from single point pressure reduction.
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