• Out of Stock
    11L Plastic Hydraulic Tank 120mm (DC) Neck Flange - Approved Hydraulics Limited
    Regular price £25.51 Ex VAT £30.62 Inc VAT
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    11L Plastic Hydraulic Tank 120mm (DC Power Pack) Neck Flange - Includes Filler Breather (with dip stick) and Blank Plug

    Key Features

    • Capacity: 11 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 £25.51 Ex VAT £30.62 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Out of Stock
    Weld collars 123mm (AC Motors) - Approved Hydraulics Limited
    Regular price £9.04 Ex VAT £10.85 Inc VAT
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    Weld collars 123mm (AC Motors)

    Key Features

    • Size: 123 mm
    • Function: weld on collar for tank neck
    • Use: mount 120 mm ; 123 mm filler necks to custom reservoirs
    • Material: steel
    • Applications: power pack tanks ; bespoke fabrications
    Regular price £9.04 Ex VAT £10.85 Inc VAT
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  • Weld collars 120mm (DC Motors) - Approved Hydraulics Limited
    Regular price £9.04 Ex VAT £10.85 Inc VAT
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    Weld collars 120mm (DC Motors)

    Key Features

    • Size: 120 mm
    • Function: weld on collar for tank neck
    • Use: mount 120 mm ; 123 mm filler necks to custom reservoirs
    • Material: steel
    • Applications: power pack tanks ; bespoke fabrications
    Regular price £9.04 Ex VAT £10.85 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Group 1.0 Pump Side Coupling For Mounting kit for B14 AC motor - Approved Hydraulics Limited
    Regular price £3.79 Ex VAT £4.55 Inc VAT
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    Group 1.0 Pump Side Coupling For Mounting kit for B14 AC motor

    Key Features

    • Pump group: group 1
    • Role: pump side semi coupling ; tang drive
    • Mates with: b14 motor side coupling frames 71 ; 80 ; 90 ; 100/112
    • Use: couples gear pump to motor via elastic drive
    • Application: ac mini power packs
    Regular price £3.79 Ex VAT £4.55 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.

  • Motor side Coupling For Mounting kit for frame 80 B14 AC motor - Approved Hydraulics Limited
    Regular price £10.53 Ex VAT £12.64 Inc VAT
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    Motor side Coupling For Mounting kit for frame 80 B14 AC motor

    Key Features

    • Interface: iec b14 motor face
    • Frame size: 80
    • Role: motor side semi coupling
    • Mates with: group 1 pump side coupling
    • Use: connect ac motor to gear pump in mounting kit
    Regular price £10.53 Ex VAT £12.64 Inc VAT
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  • Motor side Coupling For Mounting kit for frame 71 B14 AC motor - Approved Hydraulics Limited
    Regular price £9.34 Ex VAT £11.21 Inc VAT
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    Motor side Coupling For Mounting kit for frame 71 B14 AC motor

    Key Features

    • Interface: iec b14 motor face
    • Frame size: 71
    • Role: motor side semi coupling
    • Mates with: group 1 pump side coupling
    • Use: connect ac motor to gear pump in mounting kit
    Regular price £9.34 Ex VAT £11.21 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 5L Steel Hydraulic Tank 123mm (AC) Neck Flange - Approved Hydraulics Limited
    Regular price £31.80 Ex VAT £38.17 Inc VAT
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    5L Steel Hydraulic Tank 123mm (AC) Neck Flange

    Key Features

    • Capacity: 5 l
    • Neck flange: 123 mm ac
    • Material: steel
    • Orientation: vertical ; horizontal mounting
    • Use: mini hydraulic power packs reservoir
    • Compatibility: ac motor power pack builds ; 123 mm neck accessories
    Regular price £31.80 Ex VAT £38.17 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 12L Steel Hydraulic Tank 120mm (DC) Neck Flange - Approved Hydraulics Limited
    Regular price £38.25 Ex VAT £45.90 Inc VAT
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    12L Steel Hydraulic Tank 120mm (DC) Neck Flange

    Key Features

    • Capacity: 12 l
    • Neck flange: 120 mm dc
    • Material: steel
    • Orientation: vertical ; horizontal mounting
    • Use: mini hydraulic power packs reservoir
    • Compatibility: dc motor power pack builds ; 120 mm neck accessories
    Regular price £38.25 Ex VAT £45.90 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 8L Steel Hydraulic Tank 120mm (DC) Neck Flange - Approved Hydraulics Limited
    Regular price £35.31 Ex VAT £42.38 Inc VAT
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    8L Steel Hydraulic Tank 120mm (DC) Neck Flange

    Key Features

    • Capacity: 8 l
    • Neck flange: 120 mm dc
    • Material: steel
    • Orientation: vertical ; horizontal mounting
    • Use: mini hydraulic power packs reservoir
    • Compatibility: dc motor power pack builds ; 120 mm neck accessories
    Regular price £35.31 Ex VAT £42.38 Inc VAT
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 5L Steel Hydraulic Tank 120mm (DC) Neck Flange - Approved Hydraulics Limited
    Regular price £31.80 Ex VAT £38.17 Inc VAT
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    • Delivery to UK & Ireland

    5L Steel Hydraulic Tank 120mm (DC) Neck Flange

    Key Features

    • Capacity: 5 l
    • Neck flange: 120 mm dc
    • Material: steel
    • Orientation: vertical ; horizontal mounting
    • Use: mini hydraulic power packs reservoir
    • Compatibility: dc motor power pack builds ; 120 mm neck accessories
    Regular price £31.80 Ex VAT £38.17 Inc VAT
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Hydraulic Oil ISO 32, 205 Litre Barrel - Approved Hydraulics Limited
    Regular price £685.80 Ex VAT £822.96 Inc VAT
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    Hydraulic Oil ISO 32, 205 Litre Barrel

    Key Features

    • Viscosity grade: iso vg 32
    • Type: mineral ; anti wear hm ; hlp
    • Standards: iso 11158 hm ; din 51524-2 hlp
    • Kinematic viscosity @40c: 32 mm^2/s nominal
    • Air release ; water separation: good
    • Use: industrial ; mobile hydraulic pumps ; motors ; valves
    • Packaging: 205 l barrel
    Regular price £685.80 Ex VAT £822.96 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 2 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable - Approved Hydraulics Limited
    Regular price £298.06 Ex VAT £357.68 Inc VAT
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    2 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable

    Key Features

    • Buttons: 2 on/off
    • Supply: 12 ; 24 vdc
    • Cable: 2.4 m prewired
    • Use: remote control of basic hydraulic functions
    • Application: hydraulic component
    Regular price £298.06 Ex VAT £357.68 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 50L TIE ROD KIT (3 Rods / kit) 10 Bank M8x1.25 470mm long - Approved Hydraulics Limited
    Regular price £13.83 Ex VAT £16.60 Inc VAT
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    50L TIE ROD KIT (3 Rods / kit) 5 Bank M8x1.25 280mm long

    Key Features

    • Valve family: 50l sectional valve
    • Configuration: 5 bank
    • Rods per kit: 3
    • Thread: m8x1.25
    • Rod length: 280 mm
    • Application: clamp sectional valve stack ; maintain alignment under load
    • Compatibility: tie rod bores in 50l family
    • Variants: 1 ; 2 ; 3 ; 4 ; 5 ; 6 ; 7 ; 8 bank options
    Regular price £13.83 Ex VAT £16.60 Inc VAT
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  • Microswitch (Normally closed) M14 x 1.5 thread - Approved Hydraulics Limited
    Regular price £12.91 Ex VAT £15.50 Inc VAT
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    Microswitch (Normally closed) M14 x 1.5 thread

    Key Features

    • Part number: 20010687
    • Contact form: Normally closed
    • Mounting thread: M14 x 1.5
    • Function: Mechanical switch for position feedback in hydraulic controls
    • Typical use: Used in valve microswitch kits for spool position indication
    • Installation: Threaded body mounts into bracket or valve accessory kit
    Regular price £12.91 Ex VAT £15.50 Inc VAT
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  • Out of Stock
    45L-50L Control Valve 3 Position Detent Kit (G) - Approved Hydraulics Limited
    Regular price £29.14 Ex VAT £34.97 Inc VAT
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    45L-50L Control Valve 3 Position Detent Kit (G)

    Key Features

    • Part number: 30075303
    • Compatibility: 45L; 50L control valve family
    • Detent type: 3 position detent kit; type G
    • Function: Locks spool in 3 working positions without holding the lever
    • Typical use: Continuous functions such as motors or extended actuator cycles
    • Installation: Retrofit kit for valve spool end cap assembly
    Regular price £29.14 Ex VAT £34.97 Inc VAT
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  • 160L 240L M12 Hand Lever - Approved Hydraulics Limited
    Regular price £5.08 Ex VAT £6.10 Inc VAT
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    160L 240L M12 Hand Lever

    Key Features

    • Thread: M10
    • Lever length: mm
    • Grip: black plastic knob
    • Compatibility: 45 l ; 80 l ; 90 l ; 100 l ; 120 l ; 150 l ; 240 l valve families
    • Application: hydraulic component
    Regular price £5.08 Ex VAT £6.10 Inc VAT
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  • Hand lever 45L -80L-90L-100L-120L-150L-240L M10 Thread x 230mm Long - Black Plastic Handle - Approved Hydraulics Limited
    Regular price £5.93 Ex VAT £7.12 Inc VAT
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    Hand lever 45L -80L-90L-100L-120L-150L-240L M10 Thread x 230mm Long - Black Plastic Handle

    Key Features

    • Thread: M10
    • Lever length: 230 mm
    • Grip: black plastic knob
    • Compatibility: 45 l ; 80 l ; 90 l ; 100 l ; 120 l ; 150 l ; 240 l valve families
    • Application: hydraulic component
    Regular price £5.93 Ex VAT £7.12 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 24VDC Coil For Z50 valve 16.3mm Hole x 50mm Long - Approved Hydraulics Limited
    Regular price £20.56 Ex VAT £24.68 Inc VAT
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    24VDC Coil For Z50 valve 16.3mm Hole x 50mm Long

    Key Features

    • Voltage: 24 vdc
    • Bore: 16.3 mm
    • Length: 50 mm
    • Use: z50 sectional valve coil
    • Connector: din plug
    Regular price £20.56 Ex VAT £24.68 Inc VAT
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  • Out of Stock
    Hydraulic Leg Lock off Valve - Isolator - Diverter valve 3/8" - Approved Hydraulics Limited
    Regular price £123.29 Ex VAT £147.95 Inc VAT
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    Hydraulic Leg Lock off Valve - Isolator - Diverter valve 3/8"

    Key Features

    • Type: lock off ; diverter valve
    • Port size: 3/8"
    • Function: isolate hydraulic leg circuit
    • Use: service ; transport safety
    • Application: hydraulic system component
    Regular price £123.29 Ex VAT £147.95 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 1/4" Cylinder Breather - Approved Hydraulics Limited
    Regular price £7.56 Ex VAT £9.08 Inc VAT
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    1/4" Cylinder Breather

    Key Features

    • Thread: 1/4" BSP
    • Function: vents cylinder/actuator to atmosphere
    • Element: porous filter to block dust ingress
    • Benefit: prevents vacuum build-up and moisture accumulation
    • Use: protects seals and internal surfaces during stroke
    Regular price £7.56 Ex VAT £9.08 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 24vDC Coil For HP-50 Monoblock Valve 24mm Dia Hole x 104mm Long - Approved Hydraulics Limited
    Regular price £104.10 Ex VAT £124.93 Inc VAT
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    24vDC Coil For HP-50 Monoblock Valve 24mm Dia Hole x 104mm Long

    Key Features

    • Valve family: HP50 solenoid sections
    • Voltage: 24 VDC
    • Core ; length: Ø 24 mm ; 60 mm long
    • Connector: DIN 43650 Form A
    • Insulation class: Class H typical for DC coils
    • Protection: IP65 with gasketed DIN plug
    Regular price £104.10 Ex VAT £124.93 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 12vDC Coil For HP-50 Monoblock Valve 24mm Dia Hole x 104mm Long - Approved Hydraulics Limited
    Regular price £104.10 Ex VAT £124.93 Inc VAT
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    12vDC Coil For HP-50 Monoblock Valve 24mm Dia Hole x 104mm Long

    Key Features

    • Valve family: HP50 solenoid sections
    • Voltage: 12 VDC
    • Core ; length: Ø 24 mm ; 60 mm long
    • Connector: DIN 43650 Form A or flying lead ; per build
    • Duty: continuous ; wet armature compatible
    • Protection: IP65 with correct DIN plug
    Regular price £104.10 Ex VAT £124.93 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Out of Stock
    11cc Group 2 Reversible Gear Motor 4 Bolt 1:8 taper 250 Bar WP 3/4" BSP Ports + 1/4" BSP Drain
    Regular price £142.55 Ex VAT £171.06 Inc VAT
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    11cc Group 2 Reversible Gear Motor 4 Bolt 1:8 taper 250 Bar WP 3/4" BSP Ports + 1/4" BSP Drain

    Key Features

    • Displacement: 11.3 cm3.rev (Group 2)
    • Mounting: 4 bolt European flange ; Ø36.5 spigot
    • Shaft: 1.8 taper with key
    • Ports: 3/4" BSP P.A.B ; 1/4" BSP case drain
    • Rotation: bi directional reversible
    • Working pressure: up to ~250–300 bar model dependent
    • Construction: aluminium body ; cast iron end covers ; pressure balanced
    Regular price £142.55 Ex VAT £171.06 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • CETOP 5 Coil  - 220VAC, (31mm Bore x 75mm long) - Approved Hydraulics Limited
    Regular price £21.65 Ex VAT £25.98 Inc VAT
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    CETOP 5 Coil - 220VAC, (31mm Bore x 75mm long)

    Key Features

    • Valve size: CETOP 5 ; ISO 4401-05
    • Voltage: 220 VAC 50 Hz
    • Core ; length: Ø 31 mm bore ; 75 mm long
    • Connector: DIN 43650 Form A
    • Protection: IP65 with proper DIN plug
    • Notes: match coil ; armature to valve make
    Regular price £21.65 Ex VAT £25.98 Inc VAT
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    • Delivery to UK & Ireland
    • 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.