Page 156 - Reciprocating Compressors Operation Maintenance
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142 Reciprocating Compressors: Operation and Maintenance
a b
FIGURE 3-15. Concentric ring valves: (a) Typical lubricated, ring-type reversible
valve of dual spring design. Each spring activates two rings, (b) Typical lubricated,
ring type reversible valve of series spring design. Each ring is activated by three or
more individual springs, (c) Typical non-lubricated, ring-type reversible valve
employing spring loaded dynamic guide bearings. (Source: France Compressor
Products, Division of Colt Industries, Newtown, Pennsylvania)
FIGURE 3-16.
Aerodynamically shaped
concentric ring valves
(Source: Cook-Manley,
Houston, Texas),
