Bray 98 Series - Manual (Page 14)

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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.
S98 O & M : 14
Series 98 Operation & Maintenance
6.6 Reassembly of Actuator

the Yoke to one side on which the Pressure Module is to be

compound on the Piston Rod threads and locate the module

module on the spigot.

fasten the modules with Spring Washers and Stud Nuts,
referring to the tables on page 18 for torque values.

Module and couple the Piston Rod threads to the Guide
block, using an extended socket or tube spanner. Refer to
the tables on page 18 for torque values.

low pressure air (5psi) on the End Cap port till the Yoke
reaches end of stroke. Restrain the Guide Bar from sliding
out of the Housing while stroking.

using Studs (51), Nuts (50) and Spring Washers (49). Skip
to step 12.

other side of Torque Module, following relevant actions

the other side of the Torque Module in same manner as the
Pressure Module and couple the Spring Rod to Guide Block
just as was done with the Piston Rod. Always ensure to
tighten the Piston and the Spring Rod to the recommended
torque.

(or the Extended Travel Stop/Jackscrew Assembly/Hydraulic
override cylinder, if provided).

Operating Pressure, as noted on the nameplate.
7.0 Field Conversions
7.1 Fail Safe Condition (for Spring Return
Actuators)
The fail safe direction on Series 98 spring return actuator can be
reversed from fail CW to fail CCW and vise versa. This requires
interchanging the position of Pressure and Spring Modules.
NOTICE
Though the direction change is possible to be accomplished
without removing the Torque Module off the Valve (or Manual
override gearbox), it is strongly recommended to take the actuator
off the valve to do the fail safe reversal. The reason being, the
actuator travel stop bolts need to be backed off completely to
turn the Yoke sufficiently to safely disconnect the Spring Rod of
the Spring Module, which may be prevented by the valve travel
stop or the override gearbox, if present.
CAUTION
Never try to unscrew and remove the Spring Rod without
completely relieving the spring load on it.


properly in the groove.

of the Actuator.

the travel stop bolts, as required for proper valve operation.
Tighten the sealing Lock Nuts on the travel Stop Bolts.

pressure.