Features and Benefits
High-efficiency valves:
Corken valves offer quiet operation and high
durability in oil-free gas applications.
Ductile iron construction:
All cylinders and heads are ductile iron for maximum
thermal shock endurance.
Self-lubricating PTFE piston rings:
Corken provides a variety of state-of-the-art piston
ring designs to provide the most cost-effective
operation of compressors for non-lube service. The
step-cut design provides higher efficiencies during
the entire life of the piston ring.
Positively locked pistons:
Simple piston design allows end clearance to be
precisely set to provide maximum efficiency and
long life.
Self-lubricating piston rod seals:
Seals constructed of PTFE incorporating special
fillers to ensure no oil carry over and maximize
leakage control. Spring loaded seal design self
adjusts to compensate for normal wear.
Nitride-coated piston rods:
Impregnated nitride coating provides superior
corrosion and wear resistance.
Adjustable packing screw:
Ensures maximum sealing capacity during the life of
the packing (T791 and T891 models only).
Cast iron crossheads:
Durable cast iron crossheads provide
superior resistance to corrosion
and galling.
Pressure-lubricated crankcase with filter:
Self-reversing oil pump ensures proper lubrication
regardless of directional rotation to main and
connecting rod bearings. Standard 10-micron filter
ensures long-lasting bearing life.
Lower packing (V-ring)
Middle packing (V-ring)
Upper packing
(Segmented)
Upper distance piece
Lower distance piece
Construction details: Model T891 compressor
Oil deflector ring
4
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