Grasso RC6 - Rotary Shaft Seal; Suction and Discharge Valve Assembly

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➙
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1. shaft seal housing
2. O-ring
3. counter-slip ring
4. slip ring
5. flexible elastomer bellows
6. spring
7. spring holder
8. driving band
9. supporting ring
10. retainer shell
11. oil leakage drain
12. main bearing bush
13. crankcase
14. oil supply from internal
lubricating circuit in crankcase
1. central bolt
2. discharge valve stroke limitor
3. pressure ring
4. sinusoidal buffer spring
5. discharge valve seat, also
suction stroke limitor
6. cylinder liner, also suction
valve seat
7. O-ring
8. suction valve ring with two (RCF6) or
one (RCA6) sinusoidal spring(s)
9. discharge valve ring with two (RCF6)
or one (RCA6) sinusoidal spring(s)
10. O-ring in crankcase partition
11. head plate
12. crankcase partition
Fig. 2.3 Suction and discharge valve assembly
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ß
SUCTION
Ý
DISCHARGE
Fig. 2.2 Rotary shaft seal
Refrigeration Division
Grasso
DESIGN DETAILS OF STANDARD
BARE COMPRESSOR
page C4.2 Installation and Maintenance Manual RC(U)6 v001.99.01.en