• Manifold Flange Assembly Screw For Mounting kit for frame 90 & 100/112 B14 AC motor - Approved Hydraulics Limited
    Regular price £1.88
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    Manifold Flange Assembly Screw For Mounting kit for frame 90 & 100/112 B14 AC motor

    Key Features

    • Standard: din 912
    • Thread: m8 x 30
    • Use: manifold flange to kit frames 90 ; 100/112 b14
    • Material: steel
    • Quantity: set of 4 typical
    Regular price £1.88
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  • Manifold Flange Assembly Screw For Mounting kit for frame 71 & 80 B14 AC motor - Approved Hydraulics Limited
    Regular price £1.86
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    Manifold Flange Assembly Screw For Mounting kit for frame 71 & 80 B14 AC motor

    Key Features

    • Standard: din 912
    • Thread: m8 x 25
    • Use: manifold flange to kit frames 71 ; 80 b14
    • Material: steel
    • Quantity: set of 4 typical
    Regular price £1.86
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  • Motor Flange Assembly Screw For Mounting kit for frame 90 B14 AC motor - Approved Hydraulics Limited
    Regular price £1.52
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    Motor Flange Assembly Screw For Mounting kit for frame 90 B14 AC motor

    Key Features

    • Standard: din 912
    • Thread: m8 x 16
    • Use: motor flange to kit frame 90 b14
    • Material: steel
    • Quantity: set of 4 typical
    Regular price £1.52
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    • Order by 3pm for Next Day Delivery
  • Motor Flange Assembly Screw For Mounting kit for frame 71 & 80 B14 AC motor - Approved Hydraulics Limited
    Regular price £1.50
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    Motor Flange Assembly Screw For Mounting kit for frame 71 & 80 B14 AC motor

    Key Features

    • Standard: din 912
    • Thread: m6 x 16
    • Use: motor flange to kit frames 71 ; 80 b14
    • Material: steel
    • Quantity: set of 4 typical
    Regular price £1.50
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 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.

  • 11L Plastic Hydraulic Tank 123mm (AC) Neck Flange
    Regular price £30.62
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    11L Plastic Hydraulic Tank 123mm (AC) Neck Flange

    Key Features

    • Capacity: 11 l
    • Material: plastic
    • Neck flange: 123 mm ac
    • Use: ac motor power pack reservoir
    • Mounting: vertical ; horizontal
    Regular price £30.62
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  • Solenoid for Mini Power Pack NC and NO Cartridges with Connector - Approved Hydraulics Limited
    Regular price From £11.83
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    Solenoid for Mini Power Pack NC and NO Cartridges with Connector

    Key Features

    • Use: solenoid for nc ; no cartridges
    • Voltage options: 12 vdc ; 24 vdc
    • Connection: din 43650 connector included
    • Duty: 100% ed
    • Ingress: ip65 with gasket
    Regular price From £11.83
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  • Steel Square Vertical Hydraulic Tank 123mm (AC) Neck Flange (Vertical & Horizontal) - Approved Hydraulics Limited
    Regular price From £55.12
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    Steel Square Vertical Hydraulic Tank 123mm (AC) Neck Flange (Vertical & Horizontal)

    Key Features

    • Material: steel
    • Neck flange: 123 mm ac
    • Orientation: vertical ; horizontal use
    • Use: reservoir for ac mini power packs
    • Compatibility: 123 mm filler ; breather ; central manifold
    Regular price From £55.12
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  • BSPP Shuttle Valve - Approved Hydraulics Limited
    Regular price From £16.57
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    BSPP Shuttle Valve

    Key Features

    • Type: shuttle valve for dual-source selection
    • Ports: as specified
    • Function: automatically connects higher of two input pressures to the outlet
    • Use: pilot signal selection; brake release; hot-oil shuttle
    Regular price From £16.57
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    • Order by 3pm for Next Day Delivery
  • BSPP Double Acting Pilot Check Valve - Flanged Version - Approved Hydraulics Limited
    Regular price From £51.19
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    BSPP Double Acting Pilot Check Valve - Flanged Version

    Key Features

    • Type: double acting pilot operated check valve
    • Ports: as specified
    • Function: locks actuator in both directions until pilot pressure opens
    • Benefit: load holding with controlled release
    • Use: cylinders that must hold position under load
    Regular price From £51.19
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    • Order by 3pm for Next Day Delivery
  • Single Acting/Tipper Hydraulic Power Packs - 1.6kW - 2 Button Pendant Control - 160 Bar Preset - Approved Hydraulics Limited
    Regular price From £210.67
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    Single Acting/Tipper Hydraulic Power Packs - 1.6kW - 2 Button Pendant Control - 160 Bar Preset

    Key Features

    • Motor: 1.6 kw dc
    • Control: 2 button pendant
    • Pressure preset: 160 bar
    • Supply: 12 vdc ; 24 vdc
    • Tank options: 1.5 ; 5 ; 8 ; 11 ; 18 l
    • Use: single acting tipper ; dump body
    Regular price From £210.67
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    • Order by 3pm for Next Day Delivery
  • Suction pipe horizonal - Approved Hydraulics Limited
    Regular price £1.81
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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 £1.81
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    • Order by 3pm for Next Day Delivery
  • Normally Open Catridge with Manual Overide Button
    Regular price £40.94
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    Normally Open Catridge with Manual Overide Button

    Key Features

    • Valve type: 2/2 poppet normally open
    • Manual override: push button
    • Cavity: sae 08 ; 3/4-16 unf
    • Pressure: up to 350 bar class
    • Flow: up to ~40 l/min class
    • Coil options: 12 vdc ; 24 vdc
    Regular price £40.94
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  • Relief valve 50 to 250 Bar Range - Approved Hydraulics Limited
    Regular price £11.15
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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 £11.15
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    • Order by 3pm for Next Day Delivery
  • Adjustable Flow Valve Cartridge
    Regular price £13.00
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    Adjustable Flow Valve Cartridge

    Key Features

    • Type: adjustable needle flow control
    • Cavity: sae 08 ; 3/4-16 unf
    • Use: meter in ; meter out flow tuning
    • Pressure rating: up to 350 bar class
    • Application: mini power pack manifold
    Regular price £13.00
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    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  Hand pump cartridge 7cc (Only Fits AC Manifold)
    Regular price £45.03
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    MINI Power Pack Hand pump cartridge 7cc (Only Fits AC Manifold)

    Key Features

    • Stroke displacement: 7 cc
    • Fits manifold: ac central manifold only
    • Function: manual emergency operation of circuit
    • Interface: screw in cartridge
    • Use: operate actuator without electric power
    Regular price £45.03
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cavity Plug - Approved Hydraulics Limited
    Regular price £3.42
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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 £3.42
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    • Order by 3pm for Next Day Delivery
  • Check valve Cartridge - Approved Hydraulics Limited
    Regular price £7.92
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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 £7.92
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    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  8.0 cc/r  Grp 1 pump
    Regular price £90.86
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    MINI Power Pack 8.0 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 8.0 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £90.86
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  7 cc/r  Grp 1 pump
    Regular price £90.86
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    MINI Power Pack 7 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 7 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £90.86
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  5.8 cc/r  Grp 1 pump
    Regular price £82.79
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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 £82.79
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  4.8 cc/r  Grp 1 pump
    Regular price £82.79
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    • Delivery to UK & Ireland

    MINI Power Pack 4.8 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 4.8 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £82.79
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  3.7 cc/r  Grp 1 pump - Approved Hydraulics Limited
    Regular price £79.16
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    MINI Power Pack 3.7 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 3.7 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £79.16
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  2.1 cc/r  Grp 1 pump
    Regular price £75.28
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    MINI Power Pack 2.1 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 2.1 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £75.28
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  1.6 cc/r  Grp 1 pump - Approved Hydraulics Limited
    Regular price £102.65
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    • Delivery to UK & Ireland

    MINI Power Pack 1.6 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 1.6 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £102.65
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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.