• PTO UNI (3 Bolts) to PUMP EN/ISO (4 Bolts) adapter Complete With Studs And Gaskets
    Regular price £83.84
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    PTO UNI (3 Bolts) to PUMP EN/ISO (4 Bolts) adapter Complete With Studs And Gaskets

    Key Features

    • Function: adapts UNI 3-bolt PTO to ISO 4-bolt pump flange
    • Includes: studs and gaskets for installation
    • Benefit: cross-standard PTO–pump compatibility
    • Use case: mount ISO 4-bolt pump on UNI 3-bolt PTO
    • Mounting pattern: UNI (3 holes) ↔ ISO (4 holes)
    • Application: direct-mount pump drive on truck PTOs
    Regular price £83.84
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  • 2 POLE PLUG to DIN 72585-2 for 00720000/100/200 - Approved Hydraulics Limited
    Regular price £18.85
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    2 POLE PLUG to DIN 72585-2 for 00720000/100/200

    Key Features

    • Connector type: 2‑pole plug
    • Standard: DIN 72585‑2 (high‑duty automotive connector)
    • ABER code: CCSEN08
    • Use: mates to ABER sensor 00720000/100/200 wiring
    • Feature: fluid‑resistant, suitable for transmission environments
    Regular price £18.85
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  • BYPASS VALVE TO WORK IN PUMPS FROM 17cc/rot TO 60cc/rot; 24 VDC
    Regular price £454.40
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    BYPASS VALVE TO WORK IN PUMPS FROM 17cc/rot TO 60cc/rot; 24 VDC

    Key Features

    • Compatibility: pump sizes 17–60 cc/rev
    • Coil: 24 VDC solenoid (12 V on request)
    • Max pressure: up to 350 bar family rating
    • Function: unloads pump by bypassing pressure to inlet
    • Variants: versions with integrated relief valve available
    • Mounting: bolts to pump end‑cap (symmetrical orientation)
    Regular price £454.40
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  • ABER Solenoid Operated Bypass Valve with Relief To Work In Pumps Of 80cc
    Regular price £543.83
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    ABER Solenoid Operated Bypass Valve with Relief To Work In Pumps Of 80cc

    Key Features

    • Model: BPR80H (with relief)
    • Pump size: 80 cc/rotation
    • Solenoid: 24 VDC
    • Pressure class: up to 350 bar (family rating)
    • Function: unloads pump and limits pressure via relief
    • Mounting: bolts to pump end-cap; symmetrical orientation
    • Operation: engage/disengage at no-load (<20 bar)
    Regular price £543.83
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  • Adam Hindle

    Sales Director

    I began my engineering career at Stockport College in around 2005, first completing a National Diploma in Electrical Engineering, followed by a Higher National Diploma in Mechanical Engineering. I then progressed to the University of Salford, where I earned a BEng (Hons) degree in Mechanical Engineering.

    After graduating, I started my professional career with Approved Hydraulics. I initially gained a combination of hands-on workshop experience and telephone-based sales experience. In later years, I moved into a full-time sales role and led the new crane and excavator attachments department that the company had recently established.

  • Out of Stock
    ADMISSION CONNECTOR 1 1/2'' PIPE 2''' ELBOW>
    Regular price £41.32
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    ADMISSION CONNECTOR 1 1/2'' PIPE 2''' ELBOW>

    Key Features

    • Connections: 1 1/2" pipe to 2" elbow
    • Form: elbow connector (pump admission)
    • Intended use: suction/inlet side of hydraulic pumps
    • Design: smooth internal radius to reduce pressure loss
    • Compatibility: ABER pump inlets / suction fittings
    Regular price £41.32
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  • Out of Stock
    ADMISSION CONNECTOR 1 1/2'' PIPE 1 1/2''' ELBOW
    Regular price £36.08
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    ADMISSION CONNECTOR 1 1/2'' PIPE 1 1/2''' ELBOW

    Key Features

    • Connections: 1 1/2" pipe to 1 1/2" elbow
    • Form: elbow connector
    • Intended use: suction/inlet side of hydraulic pumps
    • Design: swept elbow for improved flow routing
    • Compatibility: ABER pump inlets / suction fittings
    Regular price £36.08
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • GASKET ZF (0,5MM) - 4 BOLT
    Regular price £1.36
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    GASKET ZF (0,5MM) - 4 BOLT

    Key Features

    • Type: ZF PTO / pump interface gasket
    • Thickness: 0.5 mm
    • Pattern: 4-bolt mounting
    • Function: seals gearbox-to-PTO or PTO-to-pump interface
    • Service note: replace whenever PTO/pump is removed
    • Benefit: prevents oil leakage and maintains system integrity
    Regular price £1.36
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    • Delivery to UK & Ireland
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  • ADMISSION CONNECTOR 1"1/4 PIPE 2" ELBOW 45º
    Regular price £41.18
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    ADMISSION CONNECTOR 1"1/4 PIPE 2" ELBOW 45º

    Key Features

    • Connections: 1 1/4" pipe to 2" elbow
    • Elbow angle: 45°
    • Intended use: pump admission / suction line
    • Design: angled elbow aids routing in confined spaces
    • Compatibility: ABER pump suction fittings
    Regular price £41.18
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1" PIPE 2" ELBOW 45º - Approved Hydraulics Limited
    Regular price £42.28
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    • Delivery to UK & Ireland

    ADMISSION CONNECTOR 1" PIPE 2" ELBOW 45º

    Key Features

    • Connections: 1" pipe to 2" elbow
    • Elbow angle: 45°
    • Intended use: pump admission / suction line
    • Design: angled elbow helps minimise inlet pressure drop
    • Compatibility: ABER pump suction fittings
    Regular price £42.28
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • TRIANGULAR GASKET 3 HOLES
    Regular price £2.53
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    • Delivery to UK & Ireland

    TRIANGULAR GASKET 3 HOLES

    Key Features

    • Shape: triangular gasket
    • Holes: 3-hole pattern
    • Function: seals mating faces in hydraulic assemblies
    • Use: ABER pump spares / connectors
    • Service note: replace during maintenance to ensure seal integrity
    Regular price £2.53
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1'' PIPE 1'' 1/2 ELBOW 90º
    Regular price £34.03
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    ADMISSION CONNECTOR 1'' PIPE 1'' 1/2 ELBOW 90º

    Key Features

    • Connections: 1" pipe to 1 1/2" elbow
    • Elbow angle: 90°
    • Intended use: pump admission / suction side connection
    • Design: tight 90° elbow for compact routing
    • Compatibility: ABER pump suction fittings
    Regular price £34.03
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 3/4" PIPE 1"1/2 STRAIGHT
    Regular price £18.79
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    ADMISSION CONNECTOR 3/4" PIPE 1"1/2 STRAIGHT

    Key Features

    • Connections: 3/4" pipe to 1 1/2" straight
    • Type: straight admission/suction connector
    • Intended use: pump inlet / suction line
    • Design: straight-through for minimal restriction
    • Application: ABER pump spares for mobile hydraulics
    Regular price £18.79
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1''1/4 PIPE 1''1/2 ELBOW 45º
    Regular price £40.03
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    • Delivery to UK & Ireland

    ADMISSION CONNECTOR 1''1/4 PIPE 1''1/2 ELBOW 45º

    Key Features

    • Connections: 1 1/4" pipe to 1 1/2" elbow
    • Elbow angle: 45°
    • Intended use: pump admission / suction side
    • Design: angled elbow aids routing and reduces inlet losses
    • Application: ABER pump suction fittings
    Regular price £40.03
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1'' PIPE 2'' ELBOW 90º
    Regular price £37.34
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    ADMISSION CONNECTOR 1'' PIPE 2'' ELBOW 90º

    Key Features

    • Connections: 1" pipe to 2" elbow
    • Elbow angle: 90°
    • Intended use: pump admission / suction line
    • Form: elbow connector
    • Design: smooth radius to reduce inlet pressure loss
    • Compatibility: ABER pump suction fittings
    Regular price £37.34
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1"1/4 PIPE 1"1/2 ELBOW 90º
    Regular price £39.47
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    • Delivery to UK & Ireland

    ADMISSION CONNECTOR 1"1/4 PIPE 1"1/2 ELBOW 90º

    Key Features

    • Connections: 1 1/4" pipe to 1 1/2" elbow
    • Elbow angle: 90°
    • Intended use: pump admission/suction line
    • Construction: steel connector (pump spares)
    • Compatibility: ABER bent‑axis / gear pump inlets
    Regular price £39.47
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 3/4'' PIPE 1''1/4 ELBOW
    Regular price £34.04
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    • Delivery to UK & Ireland

    ADMISSION CONNECTOR 3/4'' PIPE 1''1/4 ELBOW

    Key Features

    • Connections: 3/4" pipe to 1 1/4" elbow
    • Form: elbow connector
    • Intended use: pump admission/suction side
    • Construction: steel (ABER pump spares)
    • Compatibility: ABER pump inlet fittings
    Regular price £34.04
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1"1/2 PIPE 2" ELBOW 45º
    Regular price £37.81
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    ADMISSION CONNECTOR 1"1/2 PIPE 2" ELBOW 45º

    Key Features

    • Connections: 1 1/2" pipe to 2" elbow
    • Elbow angle: 45°
    • Intended use: pump admission / suction line
    • Design: swept elbow to minimise pressure loss
    • Category: ABER pump spares / suction fittings
    Regular price £37.81
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    ABER ADMISSION CONNECTOR 1/14'' PIPE 2 STRAIGHT
    Regular price £23.92
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    ABER ADMISSION CONNECTOR 1/14'' PIPE 2 STRAIGHT

    Key Features

    • Component: pump admission connector
    • Connections: 1 1/4" pipe to 2" straight hose tail
    • Form: straight
    • Intended use: pump inlet/suction side
    • Design: smooth bore to minimise inlet losses
    • Compatibility: ABER pump suction fittings
    Regular price £23.92
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1" PIPE THREAD TO  2" STRAIGHT HOSE TAIL
    Regular price £23.17
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    ADMISSION CONNECTOR 1" PIPE THREAD TO 2" STRAIGHT HOSE TAIL

    Key Features

    • Component: pump admission connector
    • Connections: 1" pipe thread to 2" straight hose tail
    • Form: straight
    • Intended use: pump inlet/suction side
    • Design: straight-through for minimal restriction
    • Compatibility: ABER pump suction fittings
    Regular price £23.17
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1 1/4'' PIPE 2'' ELBOW
    Regular price £49.19
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    • Delivery to UK & Ireland

    ADMISSION CONNECTOR 1 1/4'' PIPE 2'' ELBOW

    Key Features

    • Component: pump admission connector
    • Connections: 1 1/4" pipe to 2" elbow
    • Elbow angle: 90°
    • Intended use: pump inlet/suction side
    • Design: swept elbow for improved routing
    • Compatibility: ABER pump suction fittings
    Regular price £49.19
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1''1/4 PIPE 1''3/4 ELBOW 90º - Approved Hydraulics Limited
    Regular price £40.85
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    • Delivery to UK & Ireland

    ADMISSION CONNECTOR 1''1/4 PIPE 1''3/4 ELBOW 90º

    Key Features

    • Component: pump admission connector
    • Connections: 1 1/4" pipe to 1 3/4" elbow
    • Elbow angle: 90°
    • Intended use: pump inlet/suction side
    • Design: compact elbow for tight installations
    • Compatibility: ABER pump suction fittings
    Regular price £40.85
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1 1/2" PIPE 1 1/2" ELBOW 45º
    Regular price £47.68
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    • Delivery to UK & Ireland

    ADMISSION CONNECTOR 1 1/2" PIPE 1 1/2" ELBOW 45º

    Key Features

    • Component: pump admission connector
    • Connections: 1 1/2" pipe to 1 1/2" elbow
    • Elbow angle: 45°
    • Intended use: pump inlet/suction side
    • Design: angled elbow aids routing and reduces inlet losses
    • Compatibility: ABER pump suction fittings
    Regular price £47.68
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1" PIPE 1"1/4 ELBOW 45º
    Regular price £28.76
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    • Delivery to UK & Ireland

    ADMISSION CONNECTOR 1" PIPE 1"1/4 ELBOW 45º

    Key Features

    • Component: pump admission connector
    • Connections: 1" pipe to 1 1/4" elbow
    • Elbow angle: 45°
    • Intended use: pump inlet/suction side
    • Design: angled elbow aids routing and reduces inlet losses
    • Compatibility: ABER pump suction fittings
    Regular price £28.76
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 3/4'''HOSE 1''''1/4 CURVE 45
    Regular price £32.38
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    ADMISSION CONNECTOR 3/4'''HOSE 1''''1/4 CURVE 45

    Key Features

    • Component: pump admission connector
    • Connections: 3/4" hose to 1 1/4" curved elbow
    • Elbow angle: 45°
    • Intended use: pump inlet/suction side
    • Design: smooth radius to minimise cavitation risk
    • Compatibility: ABER pump suction fittings
    Regular price £32.38
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

Power Take Off Spares

Power take-off for trucks connects a truck’s power supply to an external device to help run it, commonly hydraulic pumps. Here at Approved Hydraulics, you’ll discover a superb range of Aber truck-mounted PTOs that have a variety of applications

Common Calculations FAQs

Calculating force, speed, pressure, power, and efficiency in hydraulic applications.

How do you calculate actuator speed?

Actuator speed is determined by flow rate and cross-sectional area:

Speed = Flow rate ÷ Area

Flow rate is the volume of fluid delivered (in L/min or GPM).

Area is the cross-sectional area of the actuator piston: π × (diameter ÷ 2)².

How do you calculate cylinder force?

Cylinder force can be calculated using:

Force = Pressure × Area

Pressure is the system pressure (in psi or bar).

Area is the cross-sectional area of the cylinder bore (in square inches or square centimeters).

Area = π × (bore diameter ÷ 2)².

How do you calculate pressure drop across a valve?

Pressure drop can be calculated using the valve flow coefficient (Cv):

Pressure Drop (ΔP) = (Flow Rate)² ÷ (Cv² × Fluid Density)

Flow Rate is the fluid flow (in GPM or L/min).

Cv is the valve flow coefficient.

Fluid Density is the density of the hydraulic fluid.

How do you size an accumulator?

Accumulator sizing considers required flow, pressure, and pre-charge:

Accumulator Volume = Flow Rate × Time ÷ Pressure

This determines how much fluid must be stored to maintain system pressure.

How to convert psi to bar?

Use the conversion factor: 1 bar = 14.5 psi.

To convert psi to bar, divide psi by 14.5.

Example: 200 psi ÷ 14.5 = 13.79 bar.

What is pre-charge pressure in an accumulator?

Pre-charge pressure is the initial gas pressure in the accumulator before fluid enters.

It helps maintain system pressure as the accumulator discharges.

Typically set to 70–80% of system operating pressure.

What is specific gravity of hydraulic fluid?

Specific gravity is the ratio of hydraulic fluid density to water.

A value of 1 means equal density.

Less than 1 means the fluid floats; greater than 1 means it sinks.

What is torque in a hydraulic motor?

Torque is the rotational force produced based on system pressure and motor displacement:

Torque = Pressure × Displacement ÷ 2π

Pressure is the operating system pressure.

Displacement is the volume displaced per revolution (in cubic inches or cubic centimeters).

What unit is hydraulic power measured in?

Hydraulic power is measured in horsepower (HP) or kilowatts (kW).

Hydraulic horsepower can be calculated using:

HP = (Pressure (psi) × Flow rate (GPM)) ÷ 1714.

What’s the relationship between pump speed and flow?

Flow rate is directly proportional to pump speed.

If pump speed doubles, flow rate doubles (assuming constant displacement).

This is important when adjusting flow or selecting a pump for varying speeds.