Emerson KEYSTONE FIGURE 738, Repair And Maintenance Instructions

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KEYSTONE PNEUMATIC ACTUATORS
FIGURE 738
PARTS LIST SIZES P1-P6
No. Description Material
1 End cap Anodized aluminium
2 Barrel* Aluminium alloy
3 Piston Aluminium
4 Piston seal Nitrile
5 Piston wear ring Carbon filled PTFE
6 Piston rod seal Nitrile
7 Barrel seal Nitrile
8 Head cap Anodized aluminium
9 Piston rod 316 S/S
10 Clevis pin 304 S/S
11 Rod bearing Sintered bronze
PARTS LIST SIZES P7-P17
No. Description Material
1 End cap Carbon steel
2 Tie rod Carbon steel
3 Barrel Filament wound
Glass epoxy
4 Piston Carbon steel
5 Piston rod seal upper Nitrile
6 Piston wear ring Carbon filled PTFE
7 Piston seal Nitrile
8 Piston rod seal lower Nitrile
9 Piston rod bushing Sintered bronze or PTFE/lead/bronze
10 Head cap Carbon steel
11 Piston rod 316 S/S
12 Clevis 304 S/S
13 Clevis fasteners 304 S/S
14 Piston rod scraper seal Nitrile
NOTE
* Aluminium alloy barrels are standard up to and including size P6 actuators.
Glass epoxy composite is standard thereafter.
NOTE
When ordering retro-fit cylinders for sizes P7 to P17 for a Keystone knife gate valve, a different bridge piece may
be required, consult factory.
Note: New style F738 sizes P1-P6 illustrated.
Note: New style F738 sizes P7-P17 illustrated.
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Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Keystone is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions, Emerson
and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.
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