H.P.COMPRESSOR REAVELL MK7 (four cylinder,four stage)

H.P.COMPRESSOR REAVELL TC31/2 MK7 (HPC MK7) is a four stage tandem,two crank,single acting machine..the compressor has a single crankshaft with two lines running gear phased 180 degrees apart.the cylinder are arranged so that the FOURTH stage cylinder is above the FIRST stage cylinder AND the THIRD stage cylinder above the SECOND stage cylinder..SECOND and THIRD stage PISTON are cast integral.while the FOURTH stage carries a PLUNGER wich is secured to the top of the FIRST stage PISTON..
-TWO oil lubrication systems:a main,forced lubrication systems suplies the main running gear and FIRST and SECOND stage piston and cylinders,while a SECONDARY system lubricates the THIRD and FOURTH stage cylinders
-SEPARATORS are fitted after each compression stage and are automatically drained through diaphragm drains valves at 30-minute interval
-THE COMPRESSOR is designed to deliver 40 cu.ft.of free air per minute againts a pressure of 4000 lbf/in2.when running at 1000 rpm
-PERFORMANCE DATA.....


PERFORMANCE DATA:...................(SRI)
-compressor speed...................1000 rev/min
-air pressure:
.1st stage..........................30-35 lbf/in2(2.25 bar)
.2nd stage..........................220-230 lbf/in2(15.5 bar)
.3rd stage..........................950-960 lbf/in2(65.5 bar)
.4th stage..........................4000 lbf/in2(276 bar)
-oil pressure.......................35-38 lbf/in2(2.6 bar)
-oil pressure minimum...............20 lbf/in2(1.37 bar)
-oil pressure cut-out setting.......10 lbf/in2(0.69 bar)

RELIEF VALVE SETTINGS:..............(SRI)
-first stage relief valve...........55 lbf/in2(3.75 bar)
-second stage relief valve..........320 lbf/in2(21.8 bar)
-third stage relief valve...........1300 lbf/in2(88.5 bar)
-fourth stage relief valve..........4200 lbf/in2(286 bar)
-water relief valve.................25 lbf/in2(1.7 bar)
-first and second stage cooler bursting disc...........80 lbf/in2(5.45 bar)