Maintenance - Emerson Fisher SS-264 Instruction Manual

Instruction Manual
D103565X012
To lift the actuator, choke two straps, one around the spring barrel and one around the air cylinder, and connect to an
adjustable chain leveler. The chain leveler ensures the actuator and bonnet mating surfaces are parallel prior to
removal or installation. Proper alignment of the actuator and bonnet is critical to prevent binding of the shaft and
actuator. If accessories are not removed prior to lifting, use care to keep straps or chains away from piping and
accessories.
Alternatively, if the four actuator lifting lugs are accessible, chains can be used to lift the actuator. Similarly, the
actuator and bonnet mating surfaces must remain parallel.
Lifting Bonnet Only
To lift the bonnet, insert 1-1/4-7 UNC swivel hoist rings into the four lifting hole locations on the outside diameter of
the bonnet flange. Use proper length, or adjustable chains to ensure the bonnet and valve body mating surfaces
remain parallel when hoisted.
Lifting Valve Only
To lift the valve, insert two 2-1/2-8 swivel hoist rings, diametrically opposed and on opposite sides of the valve body
run, into the body­to­bonnet bolt circle. An alternative to the swivel hoist rings is to use an internal thread lifting ring
which can be threaded onto the existing 2-1/2-8 studs (key 10).
Lifting Ball/Shaft Assembly
To lift the ball/shaft assembly, install the lifting plate (GE48210) and 5/8­11x1.50 cap screw (not provided) as shown in
figure 3. Align the lifting plate edge with the keyway groove of the shaft; this will position the lifting end of the plate
over the ball. Torque the cap screw to 163 N•m (120 ft•bf). Install a 1/2-13 eye bolt into the lifting end of the plate
and torque to 92 N•m (68 ft•lbf). Lift the ball/shaft assembly vertically out of the body, being careful not to damage
the sealing surface of the ball.

Maintenance

Valve parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection
and replacement depends upon the severity of service conditions.
The open and closed travel stops of the actuator do not require adjustment unless the bonnet­to­body joint is
loosened. If the actuator is removed for packing replacement, simply remount the actuator per the Actuator Mounting
section of this manual. If the bonnet­to­body joint is loosened for any reason, establish the zero position per the
Determining Closed Position section of this manual.
Key numbers in this procedure are shown in figure 18, unless otherwise noted.
WARNING
The ball closes with a shearing, cutting motion, which could result in personal injury. To avoid injury, keep hands, tools, and
other objects away from the ball while stroking the valve.
Avoid personal injury from sudden release of process pressure. Before performing any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
SS-264 Valve
September 2021
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