| |
Industrial D-Style Compressor—Material Specifications
| Part |
Standard |
Optional | | Models
|
Material |
Models |
Material | | Head,
Cylinder | All | Ductile
iron
ASTM A536 | D492,
D692 | Ductile
iron
Din 1693 666-40.3 | | Crosshead
guide, crankcase, flywheel bearing carrier | All | Gray
iron
ASTM A48, Class 30 | | |
| Flange | D691 | Ductile
iron
ASTM A536 | D691 | Steel
welding | | D791,
D891 | ASTM
A36
Carbon steel | | |
| Valve seat
and bumper | D91, D191,
D291, D891 | 17–4
PH Stainless Steel | | |
| D391,
D491 | Ductile
iron
ASTM A536 | | |
| D691 | Gray
iron
ASTM A48, Class 30 | | |
D791
(1st stage) | 17–4
PH
Stainless steel | | |
D791
(2nd
stage) | Ductile
iron
ASTM A536 | | |
| Valve plate | D91,
D191,
D291, D891 | 410
Stainless
steel | D91,
D191, D291 | Peek |
| D391,D491 | 17–7
PH
Stainless steel | | |
| D691 | Steel,
rockwell 50C | D691 | Peek |
D791
(1st
stage) | 410
Stainless
steel | | |
D791
(2nd
stage) | 17–7
PH
Stainless steel | | |
| Valve spring | D91,
D191, D291, D691, D891 | 17–7
PH Stainless Steel | | |
| D391,
D491 | Inconel | | |
D791
(1st
stage) | 17–7
PH Stainless steel | | |
D791
(2nd
stage) | Inconel | | |
| Valve gaskets | All | Soft
aluminum | All | Copper,
iron-lead | | Piston | All | Gray
iron
ASTM A48,
Class 30 | | |
D891,
D791
(1st stage) | Ductile
iron
ASTM A536 | | |
D791
(2nd
stage) | D4512 dura-bar | | |
| Piston rod | All | C1050
Steel
nirotec coated
Rockwell 60C | All
except
D791 D891 | Chrome
oxide | | Crosshead | All | Gray
iron
ASTM A48,
Class 30 | | |
| Piston rings | All | PTFE,
glass and moly filled or Alloy 50 | All | Alloy
50 | | Piston
ring expanders | All | 302
Stainless
steel | | |
| Head gasket | All | O-ring
(Buna-N) | All | PTFE,
Viton®1, Neoprene®1 |
| Adapter plate, packing
cartridge, connecting rod | All | Ductile
iron
ASTM A536 | | |
| Packing rings | All | PTFE,
glass and moly filled or Alloy 50 | All | Alloy
50 | | Crankshaft | All | Ductile
iron
ASTM A536 | | |
| Connecting rod bearing
| All | BiMetal
D-2 Babbit | | |
| Wrist pin | All | C1018
steel,
Rockwell 62C | | |
| Wrist pin bushing | All | Bronze
SAE 660 | | |
| Main bearing | All | Tapered
roller | | |
| Inspection
plate | All | Aluminum | | |
| O-rings | All | Buna-N | All
| PTFE, Viton®1,
Neoprene®1 | | Retainer
rings | All | Steel | | |
| Miscellaneous
gaskets | All | Coroprene | | |
1 Viton® and Neoprene®
are registered trademarks of the DuPont Company. |
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