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Plate valves are recommended up to 20 MPa differential or 40 MPa discharge pressure
and 1800 rpm.
Ring Type Valve
Reciprocating Compressor Basics Components
As the name implies the ring-type valve consisting of concentric ring valve uses one
or more relatively narrow rings arranged concentrically about the centre line of the
valve (see Fig ). These valves have the advantage of a low-stress level due to the
lack of stress concentration points. It is difficult to maintain uniform flow control
across the ring-type valve.
Ring valves are recommended up to 30 MPa differential or 60 MPa discharge pressure
and 600 rpm.
Gives greater stability to the piston, eliminating piston “slap” and reducing ring wear
Permits stronger piston design and higher operating pressures.
Cross Head十字头
All industrial compressors are equipped with crosshead. The crosshead is used to
guide the piston in the cylinder bore. The following are the advantage of the crosshead.
If rod packing cooling needed, the stuffing box is jacketed for liquid coolant.
Reciprocating Compressor Basics Components
The crankshaft is connected to drive, to transfer the rotary motion.
When force lubrication is used, drilled oil passage is provided in the crankshaft.
To avoid the wear in the cylinder wall and an increase in efficiency by reducing the friction force.
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