Hydraulic Elevator Modernization

Major components considered for mechanical upgrade:


Submersible Pump Units:

  • Flows from 8.3 GPM to 255 GPM
  • All components are enclosed within the tank
  • Every tank is leak tested
  • Hinged top/front door on the submersible unit provides easy access to controls for adjusting and maintenance
  • Motor and pump are isolated by vibration dampening mounts. Outlet locations are available as requested


33 18 48
38 20 48
42 26 48
48 30 48

Standard Equipment:

  • Imperial Electric
  • Lincoln Motors – 5, 7-1/2, & 10 HP
  • Single & Three Phase available
  • Maxton Valves
  • IMO & Allweiler Pumps
  • Bore-Max Silencers
  • Seismic anchoring mounts
  • 20” level sight gauge
  • Vented cover
  • Isolation mounts between motor/pump & frame


A conventional jack assembly is one installed in the ground. Major components of a conventional jack assembly include the cylinder, plunger, jack head, packing and flange, casings, and protection (if any). When considering a modernization we will assess the age, condition and operation of jack assembly components to determine if upgrade or replacements are recommended.

Recent Code changes have required or recommend replacement of jack assemblies installed prior to 1972.


The control valve is the device on hydraulic elevators which controls the oil flow to and from the jack. Hydraulic elevators only perform as well as the valve. If the flow of oil from the power unit to the jack is erratic, the performance of your elevator will be as well, causing your elevator to ride rough, bouncy, noisy and/or to level improperly. There are many makes and models of valves all of which have fine adjustment pins, filtering screens and “O” rings prone to wear and tear. Many older style valve components are hard to get or obsolete. A poorly maintained or adjusted valve is one of the most common causes of erratic operation on hydraulic elevators.