cashco 987 Manual de instalación, uso y mantenimiento

Navegue en línea o descargue pdf Manual de instalación, uso y mantenimiento para Unidad de control cashco 987. cashco 987 15 páginas. Globe-style pneumatic control valve body iom

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ISO Registered Company
MODEL 987
GLOBE-STYLE
PNEUMATIC CONTROL VALVE
SECTION I
I.
DESCRIPTION AND SCOPE
The Model 987 is a pneumatically actuated, sliding
stem globe-style control valve. Available sizes 1/2"
- 1" (DN15 - 25).
close" arrangement.
Failure position is determined by actuator.
"D" = Direct action; on increasing air loading pressure,
the actuator stem extends. Fail-safe position is with
the stem retracted.
"R" = Reverse action; on increasing air loading
pressure, the actuator stem retracts. Fail-safe position
is with the stem extended.
This valve is designed to control moderate to severe
corrosive applications but may be applied in general
service applications also.
II. REFERENCE
Refer to Technical Bulletin 987-TB for complete
tech ni cal specifications of a Model 987 coupled with
either Cashco Actuator Model C27 or C53.
www.cashco.com/techbulletin/987.pdf
Refer to following Installation, Operation & Main te nance
Manuals (IOM's) for either actuator and/or devices that
maybe mounted to a Model 987:
Actuators: www.cashco.com/iom/C27-C53.pdf
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
BODY IOM
Internal de sign is a "push down to
SECTION II
ATC–FO – Air–to–Close, Fail Open
ATO–FC – Air–to–Open, Fail Close
CCW
– Counter Clockwise
CW
– Clockwise
D or DIR – Direct Acting
IAS
– Instrument Air Supply
LOAD
– Positioner Output Air Pressure
R or REV – Reverse Acting
SIG
– Output Signal from Instrument
V
– Vent
Model 987
with ATO - FC Actuator
ABBREVIATIONS
IOM-987
12-16