Used Knox-Western model TP-400 550 SCFM Compressed Natural Gas  Compressors

  • Fully packaged electric motor driven CNG compressors each with its own weather-proof enclosure and complete with 200 Hp, 600/3/60 explosion proof electric motor, inter-stage coolers and separators etc.
  • The compressors are Knox-Western model TP-400 four-stage unit rated for 550 SCFM (935 M3/Hr)
  • Suction pressure range 60-80 PSIG. Maximum discharge pressure is presently 3600PSIG. Can be converted to 5000 PSIG.
  • This system was originally installed in 1990 and the compressor presently has approximately 18,500 hours of operation. The compressor has recently been serviced with new piston rings.
  • The Compressors have been well maintained, and maintenance records are included.

 

  • Dimensions:
  • From the bottom to the top of the lifting hooks it is 113".
  • From the bottom to the top of the actual unit it is 109.5".
  • From left to right the overall measurement is 304".
  • The side view which is not present it is 108.5" left to right.
  •  At the bottom of the unit there are lift hooks that stick out 5.5" on either side which adds a total measurement of 119.5" for the side measurement.
  • Currently, both units are in Lloydminster, Alberta and are listed for $70,000 US each. Please contact aromocki@rocanda.com if you are interested.

 

ROCANDA INSPECTION

Compressor inspections on site at Marsden Saskatchewan.

KW 12516 <> Serial # : T400006

Throw #1, Cylinder - 2-1/2" x 1-3/8" - Serial # 5005

Throw #2, Cylinder - 4-1/2" - Serial # 5006

Throw #3, Cylinder - 2-1/2" x 1-3/8" - Serial # 5002

Throw #4, Cylinder - 7.OO" Serial # 75071

Remove top covers and side doors for inspection.

• No visual sign of damage or excessive ware.
• Oil level was high , but appeared clean.
• Crankshaft main bearing end play not measurable.
• Main bearing appearance looked good.
• Connecting rod crank end clearance on all four throws were with in Knox spec of .002" - .003"
• Connecting rod wrist pin end clearance on all four throws were with in Knox spec of .001" - .002"
• Removed suction valves for cylinder inspection, valves removed were in good shape,
Discharge valves looked good through the suction ports.
• Cylinder bores looked OK. from what was visible with pistons and head ends in place.
• Piston rods are in good condition.
• Some of the covers do not have the proper washers under bolts, this has damaged the covers
they will be ok for now but should be repaired next time they are taken off.
• Replaced all covers and re torqued.

Overall these units seem to be in operable condition, there is instrumentation work to be done in both buildings.
safety devices and shut downs will have to be checked before putting units on line.


KW 12517 <> Serial # : T400007

Throw # 1, Cylinder - 2-1/2" x 1-3/8" - Serial # 5027

Throw # 2, Cylinder - 4- 1/2" - Serial # 5007

Throw # 3, Cylinder - 2- 1/2" x1-3/8" - Serial # 5026

Throw # 4, Cylinder - 7.OO" - Serial # 75072