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AVIATION / Safety & utilities / REVIEWED 2026-09-11

F01Hydraulic power & plumbing

Deliver pressurized fluid to aircraft actuators.

Manufacturers & products

Pumps, reservoirs, controls and actuators should be compared as a pressure-and-flow system. A supplier’s portfolio range does not describe the 737’s operating pressure.

Program applicability is stated for each listing. 737NG, 737 MAX, and other aircraft examples are distinct configurations; listed products are not automatically interchangeable or approved for installation.

manufacturer

Parker Aerospace

Engine-driven hydraulic pumps

Manufactures aircraft engine-driven pumps; the portfolio’s application list includes Boeing 737. [1]

Program / application

737 listed; pump model and variant unverified [1]

Manufacturer inquiry

Suggested route: manufacturer program/product inquiry or approved aftermarket support; confirm exact aircraft and part-number effectivity.

Product scope & qualifications
  • Published range spans many designs and aircraft.
View product & inquiry route
manufacturer

Eaton Aerospace

Hydraulic power and distribution

Offers aerospace pumps, motors, reservoirs, controls and hydraulic distribution equipment. [2]

Program / application

General capability; 737 applicability unverified [2]

Manufacturer inquiry

Suggested route: manufacturer program/product inquiry or approved aftermarket support; confirm exact aircraft and part-number effectivity.

Product scope & qualifications
  • No particular 737 hydraulic part is established by this family page.
View product & inquiry route
manufacturer

Liebherr-Aerospace

Decentralized electrohydraulic power packs

Develops electric motor-driven hydraulic power packs for landing gear and flight-control architectures. [3]

Program / application

More-electric technology; 737 applicability unverified [3]

Custom program inquiry

Suggested route: manufacturer program/product inquiry or approved aftermarket support; confirm exact aircraft and part-number effectivity.

Product scope & qualifications
  • Architecture example, not an approved retrofit for this blueprint.
View product & inquiry route
manufacturer

Moog

Utility hydraulic actuation

Offers hydraulic landing-gear and steering actuators within its utility-actuation portfolio. [4]

Program / application

Utility actuation; exact 737 product unverified [4]

Custom program inquiry

Suggested route: manufacturer program/product inquiry or approved aftermarket support; confirm exact aircraft and part-number effectivity.

Product scope & qualifications
  • Actuator supplier capability should not be confused with complete hydraulic-system or pump supply.
View product & inquiry route

What remains unverified

  • Exact 737NG pump flow curves, reservoir data and actuator allocation were not established in the public sources.

Where it comes from

A company address is shown separately from a published factory location. Request the manufacturing site and lot traceability for the exact part when sourcing.

What to compare

  • Rated pressure and delivered flow · psi / L/min

    Compare pump output at the specified shaft speed, fluid and temperature.

  • Drive input · rpm / N·m / kW

    Mechanical or electric drive must match available speed, torque and power.

  • Inlet and fluid conditions

    Viscosity, inlet pressure and entrained air influence performance and durability.

  • Efficiency and thermal rejection · % / W

    Losses become heat that the aircraft must remove.

  • Fluid and seal compatibility

    Use the approved fluid specification and material combination.

  • Contamination control

    Filtration, cleanliness and acceptable debris differ by component and system.

  • Redundancy and isolation

    Assess source independence, reservoirs, valves and failure containment.

  • Installation and support

    Compare mounts, lines, mass, controls and approved part-number coverage.

Selection & integration notes
  • The pump range below is a multi-product capability range; it must never be displayed as the aircraft’s pressure setting.

Published product examples

2 REFERENCES

Specifications belong to the named product and configuration.

Parker engine-driven pump portfolioParker Aerospace
Displacement capability
0.03–5.5 in³/rev[1]Across the pump portfolio; not one model.
Pressure capability
1,000–8,000 psi[1]Across different designs; not a 737 system specification.

Request the exact model’s pressure-flow-speed curve.

Example sources [1]
Decentralized hydraulic power-pack architectureLiebherr-Aerospace

Manufacturer describes localized actuation power; mass, pressure and flow are application-dependent and unpublished here.

Example sources [3]

Sources & references

REVIEWED 2026-09-11

Manufacturer pages and technical documents support the linked claims. A review date is not a publication date or stock check.

  1. Aircraft engine-driven pumps Parker Aerospace · Publication date not stated

    Engine-driven hydraulic pump portfolio ranges and aircraft program list.

    Accessed 2026-09-10
  2. Aerospace hydraulics Eaton · Publication date not stated

    Pumps, reservoirs, controls and hydraulic distribution portfolio.

    Accessed 2026-09-10
  3. More electric aircraft Liebherr · Publication date not stated

    Decentralized electrohydraulic power-pack architectures.

    Accessed 2026-09-10
  4. Utility actuation Moog · Publication date not stated

    Landing gear and steering hydraulic actuators.

    Accessed 2026-09-10