• 12VDC Coil For Z80 Valve 22mm Hole x 54mm Long - Approved Hydraulics Limited
    Regular price £34.88
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    12VDC Coil For Z80 Valve 22mm Hole x 54mm Long

    Key Features

    • Voltage: 12 vdc
    • Bore: 22 mm
    • Length: 54 mm
    • Use: z80 sectional valve coils
    • Connector: din plug
    Regular price £34.88
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  • 24VDC Coil For Z80 Valve 22mm Hole x 54mm Long - Approved Hydraulics Limited
    Regular price £34.88
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    24VDC Coil For Z80 Valve 22mm Hole x 54mm Long

    Key Features

    • Voltage: 24 vdc
    • Bore: 22 mm
    • Length: 54 mm
    • Use: z80 sectional valve coils
    • Connector: din plug
    Regular price £34.88
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  • CETOP 3 Coil  -24VDC Coil (23mm Bore x 50mm long) - Approved Hydraulics Limited
    Regular price £15.14
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    CETOP 3 Coil -24VDC Coil (23mm Bore x 50mm long)

    Key Features

    • Voltage: 24 vdc
    • Bore: 23 mm
    • Length: 50 mm
    • Connection: din 43650 a
    • Use: cetop 3 solenoid valves
    Regular price £15.14
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  • 80L Control Valve Inlet Section -S
    Regular price £88.58
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    80L Control Valve Inlet Section -S

    Key Features

    • Valve size: 80 l/min
    • Section: inlet section -s
    • Features: integral relief ; power beyond port
    • Use: start of sectional valve stack
    • Application: hydraulic system component
    Regular price £88.58
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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.

  • Rotary shaft seal - Approved Hydraulics Limited
    Regular price £14.24
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    Rotary shaft seal

    Key Features

    • Type: rotary shaft oil seal
    • Profile: R23 style (double lip with dust lip)
    • Material: oil-resistant elastomer with garter spring
    • Use: seals cone splitter spindle against oil leakage
    • Service: replace when leakage or lip wear is observed
    Regular price £14.24
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  • 12VDC Proportional Coil For MOD09 Scanreco Servo Module 19mm Dia Hole x 50mm Long - Approved Hydraulics Limited
    Regular price £67.61
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    12VDC Proportional Coil For MOD09 Scanreco Servo Module 19mm Dia Hole x 50mm Long

    Key Features

    • Type: proportional coil for mod09 servo module
    • Voltage: 12 vdc
    • Core: 19 mm bore x 50 mm length
    • Connector: din 43650 form a style
    • Use: energize mod09 actuator section
    Regular price £67.61
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  • Adapter Kit for 45L Hydra Part Proportional Module - Approved Hydraulics Limited
    Regular price £108.86
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    Adapter Kit for 45L Hydra Part Proportional Module

    Key Features

    • Type: adapter kit for 45l hydra part proportional module
    • Compatibility: hydra part 45l and walvoil sd5 valve families
    • Contents: hydraulic adaptors ; fittings and washers
    • Function: plumbing kit for retrofit servo module pilot and return
    • Use: convert manual valve to proportional remote control
    Regular price £108.86
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  • 24VDC Proportional Solenoid PWM For Scanreco Mod10  Actuator Valve 14mm Dia Hole x 39mm Long
    Regular price £73.39
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    24VDC Proportional Solenoid PWM For Scanreco Mod10 Actuator Valve 14mm Dia Hole x 39mm Long

    Key Features

    • Voltage: 24 vdc
    • Control: pwm proportional
    • For: scanreco mod10 actuator valve
    • Core size: 14 mm id x 39 mm long
    • Application: hydraulic attachment component
    Regular price £73.39
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    • Order by 3pm for Next Day Delivery
  • Pilot Feed Adaptor And Blanking Cap Kit For Servo Module Tie Rods Scanreco - Approved Hydraulics Limited
    Regular price £27.72
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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 £27.72
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    • Order by 3pm for Next Day Delivery
  • 12VDC Proportional Solenoid PWM For Scanreco Mod10  Actuator Valve 14mm Dia Hole x 39mm Long - Approved Hydraulics Limited
    Regular price £76.42
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    12VDC Proportional Solenoid PWM For Scanreco Mod10 Actuator Valve 14mm Dia Hole x 39mm Long

    Key Features

    • Voltage: 12 vdc
    • Control: pwm proportional
    • For: scanreco mod10 actuator valve
    • Core size: 14 mm id x 39 mm long
    • Application: hydraulic attachment component
    Regular price £76.42
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    • Order by 3pm for Next Day Delivery
  • Tie rod - M8 x 212 for mounting 5 proportional modules - Approved Hydraulics Limited
    Regular price £16.16
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    Tie rod - M8 x 212 for mounting 5 proportional modules

    Key Features

    • Type: m8 tie rod for proportional module stack
    • Length: 212 mm for mounting up to 5 modules
    • Material: steel rod with threaded ends
    • Function: preload clamping and alignment of stack
    • Use: secure servo modules on base block
    Regular price £16.16
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    • Order by 3pm for Next Day Delivery
  • Tie rod - M8 x 248 for mounting 6 proportional modules - Approved Hydraulics Limited
    Regular price £17.92
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    Tie rod - M8 x 248 for mounting 6 proportional modules

    Key Features

    • Type: m8 tie rod for proportional module stack
    • Length: 248 mm for mounting up to 6 modules
    • Material: steel rod with threaded ends
    • Function: preload clamping and alignment of stack
    • Use: secure servo modules on base block
    Regular price £17.92
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Scanreco Cigarette Plug Adaptor 12V/24V - Approved Hydraulics Limited
    Regular price £52.32
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    Scanreco Cigarette Plug Adaptor 12V/24V

    Key Features

    • Type: 12 ; 24 vdc cigarette lighter adaptor
    • Interface: vehicle plug to dc output lead
    • Use: power scanreco chargers or receiver accessories
    • Note: in vehicle accessory power connection
    • Protection: fused lead per adaptor design
    Regular price £52.32
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    • Order by 3pm for Next Day Delivery
  • Tie rod - M8 x 168 for mounting 1-4 proportional modules - Approved Hydraulics Limited
    Regular price £11.64
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    Tie rod - M8 x 168 for mounting 1-4 proportional modules

    Key Features

    • Thread: m8
    • Length: 168 mm
    • Mounting capacity: 1-4 proportional modules
    • Use: secure servo/proportional module stack
    • Compatibility: scanreco mod10 servocontrol assemblies
    Regular price £11.64
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    • Order by 3pm for Next Day Delivery
  • Scanreco 3 Pon spring return toggle switch - Approved Hydraulics Limited
    Regular price £45.48
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    Scanreco 3 Position Spring Return Toggle Switch including Rubber Gaitor

    Key Features

    • Type: 3 position spring return toggle switch
    • Action: momentary ; returns to center
    • Seal: rubber gaiter for dust ; splash resistance
    • Rating: suitable for 12 ; 24 vdc control circuits
    • Use: jog functions or momentary commands
    Regular price £45.48
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  • Spacer 20mm x 4mm tube 25mm long - Approved Hydraulics Limited
    Regular price £4.48
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    Spacer 20mm x 4mm tube 25mm long

    Key Features

    • Part number: FEM141001
    • Spacer form: Tube spacer for mechanical spacing
    • Tube size: 20 mm x 4 mm tube
    • Length: 25 mm
    • Function: Provides stand off distance and alignment in assemblies
    • Typical use: FEMAC attachment and flail component mounting
    Regular price £4.48
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  • Tie rod - M8 x 345 for mounting 8 proportional modules - Approved Hydraulics Limited
    Regular price £21.28
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    Tie rod - M8 x 345 for mounting 8 proportional modules

    Key Features

    • Type: m8 tie rod for proportional module stack
    • Length: 345 mm for mounting up to 8 modules
    • Material: steel rod with threaded ends
    • Function: preload clamping and alignment of stack
    • Use: secure servo modules on base block
    Regular price £21.28
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Scanreco Battery Charger 10-30VDC Type 437 For Battery 593 only. - Approved Hydraulics Limited
    Regular price £344.28
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    Scanreco Battery Charger 10-30VDC Type 437 For Battery 593 only.

    Key Features

    • Type: battery charger type 437
    • Supply: 10 to 30 vdc vehicle input
    • Battery: for type 593 nimh cassette packs only
    • Compatibility: not for 592 ; 590 families
    • Use: in vehicle charging for scanreco transmitters
    Regular price £344.28
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    • Order by 3pm for Next Day Delivery
  • Scanreco on/off switch - Approved Hydraulics Limited
    Regular price £39.56
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    Scanreco on/off switch

    Key Features

    • Type: on off panel switch for transmitter
    • Action: latching two position
    • Mounting: panel cut out with nut and gasket
    • Rating: 12 ; 24 vdc control circuits
    • Use: power switching for rc400 units
    Regular price £39.56
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  • Emergency stop button c/w box for RC400
    Regular price £85.16
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    Emergency stop button c/w box for RC400

    Key Features

    • Type: emergency stop button with enclosure
    • Contact: safety nc contact block
    • Action: push to latch ; twist to release
    • Integration: mounts to rc400 receiver or panel
    • Use: emergency stop of radio remote system power
    Regular price £85.16
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    • Order by 3pm for Next Day Delivery
  • Scanreco 2 position detent toggle switch - Approved Hydraulics Limited
    Regular price £42.50
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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 £42.50
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    • Order by 3pm for Next Day Delivery
  • Scanreco cross Joystick 3 axis maxi code 45852 - Approved Hydraulics Limited
    Regular price £711.89
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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 £711.89
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    • Order by 3pm for Next Day Delivery
  • Scanreco G2B connector kit - Approved Hydraulics Limited
    Regular price £69.01
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    Scanreco G2B connector kit

    Key Features

    • Type: electrical connector kit for g2b receiver
    • Function: field wiring interface for power ; io ; outputs
    • Sealing: ip rated mating plugs and seals
    • Includes: connectors ; pins ; backshells as per kit list
    • Use: install rc400 g2b systems on mobile machinery
    Regular price £69.01
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    • Order by 3pm for Next Day Delivery
  • Pairing plug for G4/G5-CAN code 48118 - Approved Hydraulics Limited
    Regular price £69.48
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    • Delivery to UK & Ireland

    Pairing plug for G4/G5-CAN code 48118

    Key Features

    • Type: pairing plug for g4 ; g5 can receivers
    • Interface: m12 plug for can bus pairing port
    • Function: initiates transmitter to receiver pairing sequence
    • Part code: 48118 reference
    • Use: service tool for rc400 platforms during installation
    Regular price £69.48
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

Google Shopping for Professional Hydraulic Applications

Discover quality google shopping 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. Whether you are replacing existing parts or specifying components for a new build, our experienced team can help you find the right product. 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.