• Hydra Part 1/2" 3 Port Pressure Compensating Flow Control with bypass to line - Approved Hydraulics
    Regular price £382.32
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    1" 3 Port Pressure Compensating Flow Control with bypass to line

    Key Features

    • Max Inlet Flow: 200 Lpm
    • Max Adjusted Flow: 170 Lpm
    • Max Pressure: 350 Bar
    • Function: Pressure compensated flow control; regulates actuator speed
    • Notes: Specification information is limited in source listing; confirm dimensions and compatibility before purchase
    Regular price £382.32
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  • LS1 360° Rotary Actuator
    Regular price £3,960.06
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    LS1 360° Rotary Actuator

    Key Features

    • Rotation: 360 °
    • Torque: 2700 Nm
    • Max working pressure: 210 bar
    • Specification: Load holding valve.
    • Radial load capacity: 6700 kg
    • Axial load capacity: 6700 kg
    • Specification: Industrial Heavy load rotation
    • Specification: Manufacturing jig operation
    • Specification: Civil engineering grapple rotation applications
    • Specification: Access platform rotation
    Regular price £3,960.06
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  • Scanreco Antenna - Approved Hydraulics Limited
    Regular price £69.60
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    Scanreco Antenna

    Key Features

    • Type: receiver antenna for RC400
    • Impedance: 50 ohm typical
    • Mounting: magnetic base or bracket per kit
    • Connector: coax to RC400 receiver
    • Use: improve radio link quality
    Regular price £69.60
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  • 3/4" Port, 90°, 4 Hole, 40mm PCD, Female Gear Pump Adaptors
    Regular price £16.57
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    3/4" Port, 90°, 4 Hole, 40mm PCD, Female Gear Pump Adaptors

    Key Features

    • Type: female gear pump adaptor
    • Orientation: 90°
    • Port: 3/4"
    • Mounting: 4 hole on 40 mm pcd
    • Use: connect pump outlet to hose or fittings
    Regular price £16.57
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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.

  • 15 Metre Scanreco Control Cable (4 Pin)
    Regular price £221.57
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    15 Metre Scanreco Control Cable (4 Pin)

    Key Features

    • Type: receiver control cable
    • Interface: 4 pin connector
    • Length: 15 m
    • Sheath: industrial grade jacket with strain relief
    • Use: connect RC400 receiver to power ; valves or IO
    Regular price £221.57
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  • 10 Metre Scanreco Control Cable (5 Pin) - Approved Hydraulics Limited
    Regular price £221.57
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    10 Metre Scanreco Control Cable (5 Pin)

    Key Features

    • Type: receiver control cable
    • Interface: 5 pin connector
    • Length: 10 m
    • Sheath: industrial grade jacket with strain relief
    • Use: connect RC400 receiver to power ; valves or IO
    Regular price £221.57
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  • Scanreco Antenna Extension (2.5m) - Approved Hydraulics Limited
    Regular price £101.96
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    Scanreco Antenna Extension (2.5m)

    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 £101.96
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  • 1" Male Female Tipper Quick Release  Coupling (Set) - Approved Hydraulics Limited
    Regular price £59.82
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    1" Quick Release Coupling (Screw Type, Female)

    Key Features

    • Type: screw to connect quick release coupling female
    • Port size: 1"
    • Benefit: high resistance to pressure spikes
    • Use: high pressure attachments ; hammer circuits
    • Standard: screw to connect design
    • Pressure: high impulse rated per series
    Regular price £59.82
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  • Support for Hydra Part Cab Control Units - Approved Hydraulics Limited
    Regular price £25.62
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    Support for Hydra Part Cab Control Units

    Key Features

    • Type: cab control housing
    • Function: mount levers ; toggles and indicators
    • Construction: steel enclosure
    • Use: operator interface on vehicle or plant
    • Ingress: ip rating per build
    • Mounting: dash or pedestal mount
    Regular price £25.62
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  • Clockwise Group 2 Tandem Hydraulic Pumps - Front - Approved Hydraulics Limited
    Regular price £159.78
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    Clockwise Group 2 Tandem Hydraulic Pumps - Front

    Key Features

    • Type: group 2 tandem external gear pump
    • Displacement: 4.5 to 25 cc per rev per section
    • Rotation: clockwise
    • Mounting: 2 or 4 bolt flange per variant
    • Use: supply multiple circuits from one drive
    Regular price £159.78
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  • CETOP 3 Manual Override Cap (Screw Type) - Approved Hydraulics Limited
    Regular price £19.34
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    CETOP 3 Manual Override Cap (Screw Type)

    Key Features

    • Type: manual override cap for cetop 3 valve
    • Interface: fits din 24340 ; iso 4401 03 valves
    • Style: screw type override
    • Use: manual operation for setup or emergency
    • Seal: o ring under cap
    • Material: steel or polymer head
    Regular price £19.34
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  • CETOP 5 Manifolds - P & T 3/4" - A & B 1/2" - Approved Hydraulics Limited
    Regular price From £85.37
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    CETOP 5 Manifolds - P & T 3/4" - A & B 1/2"

    Key Features

    • Type: cetop 5 ng10 manifold
    • Interface: iso 4401 05 pattern
    • Ports: p ; t 3/4" bsp ; a ; b 1/2" bsp
    • Mounting: 4 hole on industry mm pcd
    • Use: mount ng10 valves to pipework
    Regular price From £85.37
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    • Order by 3pm for Next Day Delivery
  • Hydra Part Top Link Double Pilot Check Valve 1/2"BSP  50Lpm - Approved Hydraulics
    Regular price £89.60
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    Top Link Double Pilot Check Valve 3/4"BSP

    Key Features

    • Type: double pilot operated check valve
    • Threads: 3/4" BSP
    • Function: locks load until pilot pressure releases checks
    • Use: load holding on cylinders and top links
    • Pressure: 315 to 350 bar class
    Regular price £89.60
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  • Hydra Part Inline Pressure Relief Valve 3/8" Bsp 35Lpm 350 Bar Max - Approved Hydraulics
    Regular price £118.18
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    Inline Pressure Relief Valves 1" BSP

    Key Features

    • Type: direct acting inline pressure relief valve
    • Ports: bsp per size
    • Setting: adjustable with locknut
    • Use: over pressure protection for circuits
    • Pressure: 315 to 350 bar typical
    Regular price £118.18
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  • High Pressure 3 Port Manual Diverter Valve - Steel 1" 500Bar - Approved Hydraulics Limited
    Regular price £137.88
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    High Pressure 3 Port Manual Diverter Valve - Steel 1" 500Bar

    Key Features

    • Type: 3 port manual diverter valve
    • Ports: 1" bsp
    • Pressure: up to 500 bar class
    • Body: steel construction
    • Use: select pressure line between two circuits
    Regular price £137.88
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  • High Pressure 3 Port Manual Diverter Valve - Steel 3/4" 500Bar - Approved Hydraulics Limited
    Regular price £108.67
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    High Pressure 3 Port Manual Diverter Valve - Steel 3/4" 500Bar

    Key Features

    • Type: 3 port manual lever diverter ; open centre
    • Pressure rating: up to 500 bar
    • Port size: 3/4"
    • Function: diverts inlet to a or b ; closed centre when specified
    • Use: circuit selection on high pressure lines
    Regular price £108.67
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  • 6 Port Closed Centre Solenoid Diverter Valve 3/4" 120LPM 12vDC/24vDC - Approved Hydraulics Limited
    Regular price £364.21
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    6 Port Closed Centre Solenoid Diverter Valve 3/4" 120LPM 12vDC/24vDC

    Key Features

    • Type: 6 port ; 2 position solenoid diverter ; closed centre
    • Port size: 3/4"
    • Nominal flow: 120 lpm
    • Coils: 12 vdc ; 24 vdc
    • Function: select two circuits ; isolates when de-energised
    • Typical applications: auxiliary circuit selection on mobile plant
    Regular price £364.21
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  • Hydra Part 6 Port Solenoid Diverter Valve 3/8" Open Centre 50LPM 12/24vDC - Approved Hydraulics
    Regular price £102.36
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    6 Port Closed Centre Solenoid Diverter Valve 3/8" 50LPM 12vDC/24vDC

    Key Features

    • Type: 6 port 2 position stackable diverter
    • Nominal flow: 50 L/min
    • Max operating pressure: up to 250 bar; 350 bar with drain (typical)
    • Ports: 3/8" BSP
    • Actuation: solenoid 12V or 24V DC
    • Use: add auxiliary circuit from a single control lever
    • Stacking: multiple valves can be used in series
    Regular price £102.36
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  • Hydra Part 6 Port Solenoid Diverter Valve 1/2" Open Centre 80LPM 12/24Vdc - Approved Hydraulics
    Regular price £133.36
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    6 Port Closed Centre Solenoid Diverter Valve 1/2" 80LPM 12vDC/24vDC

    Key Features

    • Type: 6 port 2 position stackable diverter (series up to 5 units)
    • Nominal flow: 80 L/min
    • Max operating pressure: 250 bar
    • Ports: 1/2" BSP
    • Actuation: solenoid 12V or 24V DC
    • Filtration: 18/14 to ISO 4406
    • Fluid temperature: -20 to +70 °C; ambient -40 to +95 °C
    • Viscosity range: 10–400 mm2/s
    • Note: solenoid design avoids external drain line
    Regular price £133.36
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  • Hydra Part CETOP 3 All Ports Blocked with Manual Lever - Approved Hydraulics
    Regular price From £134.20
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    CETOP 3 - P Blocked - A&B to T with Manual Lever

    Key Features

    • Interface: cetop 3 ; ng06 ; iso 4401-03
    • Actuation: manual lever
    • Spool function: ng06 ; p blocked ; a ; b to t
    • Mounting: sandwich between manifold and subplate
    • Use: manual override ; test ; emergency operation
    Regular price From £134.20
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  • Hydra Part CETOP 3 All Ports Blocked with Manual Lever - Approved Hydraulics
    Regular price From £116.29
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    CETOP 3 All Ports Connected with Manual Lever

    Key Features

    • Interface: cetop 3 ; ng06 ; iso 4401-03
    • Actuation: manual lever
    • Spool function: ng06 ; all ports connected
    • Mounting: sandwich between manifold and subplate
    • Use: manual override ; test ; emergency operation
    Regular price From £116.29
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    • Order by 3pm for Next Day Delivery
  • Hydra Part CETOP 3 All Ports Blocked with Manual Lever - Approved Hydraulics
    Regular price From £168.26
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    CETOP 3 - P to T - A&B Blocked with Manual Lever

    Key Features

    • Interface: cetop 3 ; ng06 ; iso 4401-03
    • Actuation: manual lever
    • Spool function: ng06 ; p to t ; a ; b blocked
    • Mounting: sandwich between manifold and subplate
    • Use: manual override ; test ; emergency operation
    Regular price From £168.26
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    • Order by 3pm for Next Day Delivery
  • Proportional 5 Pin Paddle - Approved Hydraulics Limited
    Regular price £241.02
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    Proportional 5 Pin Paddle

    Key Features

    • Type: proportional paddle lever for RC400 transmitters
    • Connector: 5 pin electrical interface
    • Return: spring return to center
    • Integration: Mini and Maxi portable control units
    • Use: proportional function control with fingertip actuation
    Regular price £241.02
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  • HP50 1/2" Solenoid & Lever Control Valves 50LPM 12/24VDC - Approved Hydraulics Limited
    Regular price From £404.90
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    HP50 1/2" Solenoid & Lever Control Valves 50LPM 12/24VDC

    Key Features

    • Valve type: monoblock ; solenoid + lever control
    • Nominal flow: 50 lpm
    • Coils: 12 vdc ; 24 vdc
    • Sections: up to 6 sections in single housing
    • Spool: double acting standard ; other spools available
    • Options: hp carry over ; valve kits ; connectors
    • Mounting: in line ; direct to system
    Regular price From £404.90
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    • 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.