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All information herein is proprietary and condential and may not be copied or reproduced without the expressed written consent of BRAY INTERNATIONAL, Inc.
The technical data herein is for general information only. Product suitability should be based solely upon customer’s detailed knowledge and experience with their application.
Series 92-93 Pneumatic Actuator
Operations and Maintenance Instructions
General Pneumatic System
Recommendations
To maintain maximum efciency with the Series 92/93
actuator, as well as many other pneumatic devices, the
following suggestions are offered:
• Air supply lines should be run in accordance with a
Standard Piping Practice, and should not have exag-
gerated loops, which may trap condensate.
• All pipe ends should be thoroughly cleaned and
deburred after cutting to ensure that the pipeline
is clear of cuttings.
• Where air pipelines are subjected to extremes of
temperature, the system should be tted with air
drying equipment.
• If pipelines are hydraulically tested, the lines should
be “blown down” with high pressure air to clear all
water prior to connecting the lines to the actuator.
• Where a system is dependent on air lter equipment,
the air lters should be in positions that allow easy
access for maintenance and/or draining.
• Where pneumatic valve positioners or pneumatic
controllers are installed in a valve actuator assembly,
oil mist lubricated air should not be used unless the
manufacturer states specically that the positioner
or controller is compatible with lubricated air. In
general, lubricated air is not recommended for a
positioner.
• Where pipe tting sealants or tapes are used, they
should be applied to the male threads only, and limited
to the rst three threads. When applied to female
threads, excess compound or tape can be transmitted
into the actuator control lines and cause malfunctions
in downstream equipment.
• Lubricators should be installed downstream of
regulators.
• Eliminate or minimize sharp bends in the air sup-
ply lines.
Dimensional Data
For Dimensions see Bray ES Drawings:
ES11A-0460, ES11A-0533, ES11A-0534,
ES12A-0533 and ES12A-0534 on
www.bray.com or www.braycontrols.com
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