• 3/4" BSP Female Swivel x 3/4" BSP Female Swivel - Approved Hydraulics Limited
    Regular price £7.49 Ex VAT £8.99 Inc VAT
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    1/2" BSP Female Swivel x 5/8" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor (male to male)
    • Threads: 1/2 to 5/8 BSP
    • Swivel: captive nut allows hose connection without twisting
    • Seal: cone/washer seal depending on variant
    • Use: connect hoses where rotation during assembly is restricted
    Regular price £7.49 Ex VAT £8.99 Inc VAT
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  • SENSOR FAE 41020 - NC (ISUZU,ZF S5-42,TOYOTA SUP.) - Approved Hydraulics Limited
    Regular price £18.39 Ex VAT £22.07 Inc VAT
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    SENSOR FAE 41020 - NC (ISUZU,ZF S5-42,TOYOTA SUP.)

    Key Features

    • Type: Normally-Closed (NC) electrical sensor
    • Model: FAE 41020
    • Compatibility: ISUZU, ZF S5-42, Toyota (per listing)
    • Function: PTO status/actuation indication
    • Install: mounts to compatible ABER PTO housings
    • Leads: electrical connection suitable for vehicle harness
    Regular price £18.39 Ex VAT £22.07 Inc VAT
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  • Pilot Feed Adaptor And Blanking Cap Kit For Servo Module Tie Rods Scanreco - Approved Hydraulics Limited
    Regular price £14.74 Ex VAT £17.69 Inc VAT
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    Pilot Feed Adaptor And Blanking Cap Kit For Servo Module Tie Rods Scanreco

    Key Features

    • Function: pilot feed adaptor ; blanking cap kit
    • Use: servo module tie rods
    • Benefit: clean pressure tapping ; sealed blanking
    • Compatibility: scanreco servocontrol stacks
    • Application: hydraulic attachment component
    Regular price £14.74 Ex VAT £17.69 Inc VAT
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  • 1" Male Female Tipper Quick Release  Coupling (Set) - Approved Hydraulics Limited
    Regular price £102.54 Ex VAT £123.05 Inc VAT
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    1" Male Female Tipper Quick Release Coupling (Set)

    Key Features

    • Size: 1"
    • Type: screw type quick release set
    • Ends: male ; female pair
    • Use: tipper circuit disconnect
    • Application: single acting tipping gear
    Regular price £102.54 Ex VAT £123.05 Inc VAT
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  • Team Member

    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.

  • Aluminium Hydraulic FEMALE Shaft AGRI PTO Gearbox 3:1 Ratio (10 kW Max) with Group 2 Pump - Approved Hydraulics Limited
    Regular price From £188.00 Ex VAT From £225.60 Inc VAT
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    Aluminium Hydraulic FEMALE Shaft AGRI PTO Gearbox 3:1 Ratio (10 kW Max) with Group 2 Pump

    Key Features

    • Construction: aluminium housing
    • Shaft: female
    • Ratio: 3.1
    • Max power: 10 kw
    • Pump: integrated group 2 pump
    • Use: agricultural hydraulic drive
    Regular price From £188.00 Ex VAT From £225.60 Inc VAT
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  • Return Pipe Vertical 180mm - Approved Hydraulics Limited
    Regular price £1.16 Ex VAT £1.40 Inc VAT
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    Return Pipe Vertical 180mm

    Key Features

    • Orientation: vertical
    • Length: 180 mm
    • Connection: g 1/4 interface
    • Use: return oil from manifold to tank
    • Application: mini power pack
    Regular price £1.16 Ex VAT £1.40 Inc VAT
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  • Normally Closed Catridge for SA Power Pack - Approved Hydraulics Limited
    Regular price £32.50 Ex VAT £39.00 Inc VAT
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    Normally Closed Catridge for SA Power Pack

    Key Features

    • Valve type: 2/2 poppet normally closed
    • Cavity: sae 08 ; 3/4-16 unf
    • Use: single acting power pack hold load
    • Coil options: 12 vdc ; 24 vdc
    • Manual override: available variants
    Regular price £32.50 Ex VAT £39.00 Inc VAT
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  • Motor Flange Assembly Screw For Mounting kit for frame 100/112 B14 AC motor - Approved Hydraulics Limited
    Regular price £1.25 Ex VAT £1.50 Inc VAT
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    Motor Flange Assembly Screw For Mounting kit for frame 100/112 B14 AC motor

    Key Features

    • Standard: din 912
    • Thread: m8 x 55
    • Use: motor flange to kit frames 100/112 b14
    • Material: steel
    • Quantity: set of 4 typical
    Regular price £1.25 Ex VAT £1.50 Inc VAT
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  • Suction pipe horizonal - Approved Hydraulics Limited
    Regular price £1.50 Ex VAT £1.81 Inc VAT
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    Suction pipe horizonal

    Key Features

    • Use: mini power pack component
    • Note: verify variant against datasheet
    • Compatibility: as per title family
    • Application: hydraulic system component
    • Application: hydraulic system component
    Regular price £1.50 Ex VAT £1.81 Inc VAT
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  • Relief valve 50 to 250 Bar Range - Approved Hydraulics Limited
    Regular price £9.29 Ex VAT £11.15 Inc VAT
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    Relief valve 50 to 250 Bar Range

    Key Features

    • Adjustment range: 50 ; 250 bar
    • Cavity: sae 08 ; 3/4-16 unf
    • Function: pump pressure protection to tank
    • Max working: up to 350 bar class
    • Application: mini power pack manifold
    Regular price £9.29 Ex VAT £11.15 Inc VAT
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  • Out of Stock
    Cavity Plug - Approved Hydraulics Limited
    Regular price £2.85 Ex VAT £3.42 Inc VAT
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    Cavity Plug

    Key Features

    • Cavity: sae 08 ; 3/4-16 unf
    • Function: blank unused screw in cartridge cavity
    • Sealing: o ring 14.00 x 1.78 mm class
    • Material: steel ; zinc plated
    • Pressure rating: up to 350 bar typical
    • Use: testing ; bypass ; shipping seal
    Regular price £2.85 Ex VAT £3.42 Inc VAT
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  • Check valve Cartridge - Approved Hydraulics Limited
    Regular price £6.60 Ex VAT £7.92 Inc VAT
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    Check valve Cartridge

    Key Features

    • Type: screw in cartridge check valve
    • Cavity: sae 08 ; 3/4-16 unf
    • Function: permits flow 1 -> 2 ; blocks reverse
    • Cracking pressure: 0.3 bar class
    • Use: backflow prevention ; load holding in mini power packs
    Regular price £6.60 Ex VAT £7.92 Inc VAT
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  • Scanreco 2 position detent toggle switch - Approved Hydraulics Limited
    Regular price £33.35 Ex VAT £40.03 Inc VAT
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    Scanreco 2 Position Detent Toggle Switch including Rubber Gaitor

    Key Features

    • Type: 2 position detent toggle switch
    • Action: latching both positions
    • Seal: rubber gaiter cap for dust ; moisture protection
    • Rating: suitable for 12 ; 24 vdc control circuits
    • Use: on off or mode selection on transmitter
    Regular price £33.35 Ex VAT £40.03 Inc VAT
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  • Scanreco cross Joystick 3 axis maxi code 45852 - Approved Hydraulics Limited
    Regular price £593.24 Ex VAT £711.89 Inc VAT
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    Scanreco cross Joystick 3 axis maxi code 45852

    Key Features

    • Type: 3 axis hall effect cross joystick
    • Compatibility: rc400 maxi transmitter panel
    • Axes: x ; y ; z proportional outputs
    • Return: spring centered on all axes
    • Use: precise multi function hydraulic control
    Regular price £593.24 Ex VAT £711.89 Inc VAT
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  • Antenna extension cable 10M
    Regular price £121.21 Ex VAT £145.46 Inc VAT
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    Antenna extension cable 10M

    Key Features

    • Type: antenna extension cable for RC400 receiver
    • Length: as specified in title
    • Impedance: 50 ohm typical
    • Connector: coax connection for RC400 antenna port
    • Use: optimise radio reception by relocating antenna
    Regular price £121.21 Ex VAT £145.46 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Scanreco Proportional Single Module PWM For MOD10 Servo Unit 24V Includes Mounting Bolts.
    Regular price £416.71 Ex VAT £500.06 Inc VAT
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    Scanreco Proportional Single Module PWM For MOD10 Servo Unit 24V Includes Mounting Bolts.

    Key Features

    • Type: proportional single module for MOD10 actuator block
    • Supply: 24 vdc
    • Control: PWM electromagnetic section with mechanical feedback
    • Mounting: bolts included for block assembly
    • Use: add one proportional function to manual valve bank
    Regular price £416.71 Ex VAT £500.06 Inc VAT
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  • Scanreco Maxi Transmitter Emergency Stop Button - Approved Hydraulics Limited
    Regular price £73.25 Ex VAT £87.91 Inc VAT
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    Scanreco Maxi Transmitter Emergency Stop Button

    Key Features

    • Type: scanreco radio remote component
    • Compatibility: rc400 series
    • Use: proportional control ; machine remote operation
    • Note: model specific details per part number
    • Service: consult oem manual for wiring
    Regular price £73.25 Ex VAT £87.91 Inc VAT
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  • MINI Power Pack  5.8 cc/r  Grp 1 pump
    Regular price £68.99 Ex VAT £82.79 Inc VAT
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    MINI Power Pack 5.8 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 5.8 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £68.99 Ex VAT £82.79 Inc VAT
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  • MINI Power Pack  0.75 cc/r  Grp 1 pump - Approved Hydraulics Limited
    Regular price £49.16 Ex VAT £59.00 Inc VAT
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    MINI Power Pack 0.75 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 0.75 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £49.16 Ex VAT £59.00 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 24V - 150AMP Starter + Cables and Copper Bar (Kit) - Approved Hydraulics Limited
    Regular price £22.34 Ex VAT £26.81 Inc VAT
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    24V - 150AMP Starter + Cables and Copper Bar (Kit)

    Key Features

    • System voltage: 24 vdc
    • Current class: 150 a
    • Kit contents: starter cables ; copper bar
    • Use: dc power pack motor relay ; battery link
    • Compatibility: mini power packs ; vehicle auxiliary systems
    Regular price £22.34 Ex VAT £26.81 Inc VAT
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  • Central Manifold For AC Power Pack And 123mm Tank Flange - Approved Hydraulics Limited
    Regular price £39.75 Ex VAT £47.70 Inc VAT
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    Central Manifold For AC Power Pack And 123mm Tank Flange

    Key Features

    • Interface: 123 mm tank flange to central manifold
    • System: ac motor power pack
    • Function: routes pump ; return ; relief to cetop stack
    • Compatibility: cetop 3 spacer 30 mm ; stackable manifold 3/8 side ports
    • Use: base for ac mini power pack assemblies
    Regular price £39.75 Ex VAT £47.70 Inc VAT
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  • 4L Plastic Hydraulic Tank 123mm (AC) Neck Flange - Approved Hydraulics Limited
    Regular price £15.65 Ex VAT £18.79 Inc VAT
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    4L Plastic Hydraulic Tank 123mm (AC Power Pack) Neck Flange - Includes Filler Breather (with dip stick) and Blank Plug

    Key Features

    • Capacity: 4 l
    • Neck flange: 123 mm ac
    • Material: plastic
    • Orientation: vertical ; horizontal mounting
    • Use: mini hydraulic power packs reservoir
    • Compatibility: ac motor power pack builds ; 123 mm neck accessories
    Regular price £15.65 Ex VAT £18.79 Inc VAT
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  • Out of Stock
    18L Plastic Hydraulic Tank 120mm (DC) Neck Flange - Approved Hydraulics Limited
    Regular price £35.49 Ex VAT £42.59 Inc VAT
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    18L Plastic Hydraulic Tank 120mm (DC Power Pack) Neck Flange - Includes Filler Breather (with dip stick) and Blank Plug

    Key Features

    • Capacity: 18 l
    • Neck flange: 120 mm dc
    • Material: plastic
    • Orientation: vertical ; horizontal mounting
    • Use: mini hydraulic power packs reservoir
    • Compatibility: dc motor power pack builds ; 120 mm neck accessories
    Regular price £35.49 Ex VAT £42.59 Inc VAT
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  • Out of Stock
    13L Plastic Hydraulic Tank 120mm (DC) Neck Flange - Approved Hydraulics Limited
    Regular price £27.73 Ex VAT £33.28 Inc VAT
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    13L Plastic Hydraulic Tank 120mm (DC Power Pack) Neck Flange - Includes Filler Breather (with dip stick) and Blank Plug

    Key Features

    • Capacity: 13 l
    • Neck flange: 120 mm dc
    • Material: plastic
    • Orientation: vertical ; horizontal mounting
    • Use: mini hydraulic power packs reservoir
    • Compatibility: dc motor power pack builds ; 120 mm neck accessories
    Regular price £27.73 Ex VAT £33.28 Inc VAT
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    • Order by 3pm for Next Day Delivery

Shop All Components for Professional Hydraulic Applications

Discover quality shop all components from Approved Hydraulics, trusted by professionals across construction, transport, forestry, agriculture and industrial sectors. Built for demanding working environments, our range offers dependable performance, durable construction and trusted reliability. Browse related products including control valves, line mounted valves 1, hydraulic cylinders, hydraulic pumps to find the right solution for your hydraulic system. With fast UK delivery and expert technical support, Approved Hydraulics supplies hydraulic equipment you can rely on.

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.