Flowserve SuperNova User Manual

SuperNova Series

S050 - S200

Rack & Pinion AUTOMAX Actuators

Page 1/4

B00043e4-rev3.doc

Installation, Operating & Maintenance Instructions

All actuators are factory lubricated for life, but still should
be protected from the elements and stored indoors until
ready for use. The ports of the actuator are plugged as
supplied from the factory. In case the actuators are stored
a long period before installation, it would be a good practice
to stroke the actuators before mounting. Prior to assembly,
check the mounting surfaces, the stem adaptor and the
bracket to assure proper fit.

Manually open and close the valve to insure freeness of
operation. Be sure the valve and actuator rotate in the
same direction and are in the same position. Secure the
valve with the stem vertical. Bolt the bracket to the valve
and place the stem adaptor on the valve stem. Position the
actuator over the valve and lower to engage the stem
adaptor to the actuator shaft.

Continue to lower until the actuator seats on the bracket
mounting surface. In order to align the bolt holes, it may be
necessary to turn or stroke the actuator a few degrees
and/or adjust the actuator travel stops. Bolt the actuator to
the bracket.

After consulting the valve manufacturer’s
recommendations, adjust the travel stop bolts of the
actuator for the proper open and closed valve positions.
Pneumatically stroke the actuator several times to assure
proper operation with no binding of the stem adaptor. If the
actuator is equipped with limit switches or other
accessories, adjust them at this time.

To prolong actuator life use only clean, dry plant air.
Lubricated air is not required, however it is recommended
particularly for high cycle applications. Do not use
lubricated air with positioners.

Travel Stop Adjustment
Both Directions 5° Overtravel
12°Adjustment Each End

The SuperNova Series actuators have unique
travel stop adjustments in both clockwise and
counterclockwise directions. The 10° total overtravel
provides adjustments from –5° to +7° at the “0°”
Counterclockwise position and from +83° to + 95° at the
“90°” Clockwise position.

All actuated valves require accurate travel-stop
adjustments at both ends of the stroke to obtain optimum
performance and valve seat life. The accumulation of
tolerances in the adaption of the actuators to valves is such
that there must be a range of adjustment for both ends of
the stroke to achieve the expected performance.

Ball and Plug Valves require precise adjustment at the
open (CCW) position to protect the seat from the flow
media and the closed (CW) position to assure absolute
shut-off

Butterfly Valves require precise adjustment at the closed
position to assure full shut-off, to prevent disc overtravel
and damage to the seat at the closed position.

Tandem Valves, where two valves are operated in tandem
through a single solenoid valve (eg. A 3-Way
configuration), absolutely require precise adjustment at
both ends of the stroke to assure the seating of both
valves.

Actuator Endcap Screw

Socket Size
S050 4 mm 3 mm White
S063 5 mm 4 mm Light green
S085 6 mm 5 mm Blue
S100 6 mm 6 mm Red
S115 6 mm 6 mm Yellow
S125 8 mm 6 mm Grey
S150 8 mm 8 mm Dark green
S175 10 mm 8 mm Purple
S200 12 mm 8 mm Orange

Adjustment Bolt

Socket Size

Spring Color

Code

Actuator Type Fail

position
Double Acting Left End Cap Right End Cap
Spring Return CW Left End Cap Right End Cap
Spring Return* CCW* Right End Cap Left End Cap

*The pistons are rotated 180° for CCW fail position

Clockwise (CW)

closed

Counterclockwise

(CCW) open

Adjustment Bolt Location

SuperNova Series

S050 - S200

Rack & Pinion AUTOMAX Actuators

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OPERATION

(As viewed from top of the actuator)

Double Acting

Applying air pressure to Port 2 drives the pistons outward,
which turns the pinion counterclockwise as the air volume on
the outside of the pistons exhausts through Port 1.

Applying air pressure to Port 1 drives the pistons inward,
which turns the pinion clockwise as the air volume on the
inside of the pistons exhausts through Port 2.

B00043e4-rev3.doc

Spring return (Fail CW)

Applying air pressure to Port 2 drives the pistons outward,
which compresses the springs and turns the pinion
counterclockwise as the air volume on the outside of the
pistons exhausts through Port 1.

Spring Return (Fail CCW)

Applying air pressure to Port 2 drives the pistons outward,
which compresses the springs and turns the pinion
clockwise as the air volume on the outside of the pistons
exhausts through Port 1.

Changing direction of pinion rotation (CW to CCW)

The SuperNova series actuators are normally assembled
as Double Acting or Spring Return Fail CW (spring action
turns pinion clockwise).
To assembly the actuator on Spring Return Fail CCW
(spring action turns pinion counterclockwise):

1. Follow disassembly procedures (next page) from
point #1 through #8.

Exhausting the air pressure from Port 2 allows stored energy
of the springs to drive pistons inward, turning the pinion
clockwise. Air volume on outside of pistons vents through
Port 1.

Exhausting the air pressure from port P2 allows stored
energy of the spring to drive pistons inward, turning the
pinion counterclockwise. Air volume on outside of pistons
vents through Port 1.

2. Rotate both pistons 180° around their axis: left
piston rack must be on air supply ports side, right
pinion on the opposite side (see Spring Return
CCW drawing).

3. Follow reassembly procedures.