SQP421-50-21-11-86DCD2-18 | Low Noise Triple Fixed Displacement Vane Pump

Hydraulic fluid

• Note that pump specifications such as maximum working
  pressure and maximum speed may differ with the type of
  hydraulic fluid used. See Appendix 1 regarding hydraulic
  fluid selection.
• Mineral oil based fluid
  General industrial anti-wear hydraulic fluid is
  recommended.
• Fire resistant fluids
  Water glycols may be used with Tokyo Keiki standard
  type pumps. However maximum working pressures,
  maximum speeds, etc., specifications will differ from
  those of mineral oil based fluids.
  Please refer to specifications of each pump for details.
  Fluorine seals are used with pumps that operate on
  phosphate ester fluids. An "F3-"� suffix is used to
  designate such pumps. Specifications for maximum
  working pressures, maximum speeds, etc., will differ
  from those of mineral oil fluids.
  Please refer to specifications of each pump for details.
  Please consult Tokyo Keiki regarding other fire resistant
  fluids.

Piping and Filtration

• Suction pressure (gauge pressure)
• Proper inlet suction pressures are +35~-16.7 kPa for
  mineral oil fluids and +35~-10.1 kPa for water glycol and
  phosphate ester fluids.
• Suction pipe flow rate should be kept within 0.5~1.5 m/s.
• Filtration
  On the suction side, a 150 µm or equivalent tank filter
  (suction filter) should be used.
  On the delivery side, a full flow filter which provides
  filtration of less than 25 µm or bypass filter which
  provides filtration of less than 10 µm should be installed.