• 3 kW Drive Coupling - Approved Hydraulics Limited
    Regular price £2.87 Ex VAT £3.45 Inc VAT
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    3 kW Drive Coupling

    Key Features

    • Power rating: 3 kw
    • Role: elastic drive element for motor ; pump coupling
    • Use: b14 mounting kits ; compact power units
    • Compatibility: group 1 pump semi couplings
    • Function: damp torsional vibration ; align drive
    Regular price £2.87 Ex VAT £3.45 Inc VAT
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  • Motor side Coupling For Mounting kit for frame 100/112 B14 AC motor - Approved Hydraulics Limited
    Regular price £14.88 Ex VAT £17.86 Inc VAT
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    Motor side Coupling For Mounting kit for frame 100/112 B14 AC motor

    Key Features

    • Interface: iec b14 motor face
    • Frame size: 100/112
    • Role: motor side semi coupling
    • Mates with: group 1 pump side coupling
    • Use: connect ac motor to gear pump in mounting kit
    Regular price £14.88 Ex VAT £17.86 Inc VAT
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  • Motor side Coupling For Mounting kit for frame 90 B14 AC motor - Approved Hydraulics Limited
    Regular price £12.65 Ex VAT £15.19 Inc VAT
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    Motor side Coupling For Mounting kit for frame 90 B14 AC motor

    Key Features

    • Interface: iec b14 motor face
    • Frame size: 90
    • Role: motor side semi coupling
    • Mates with: group 1 pump side coupling
    • Use: connect ac motor to gear pump in mounting kit
    Regular price £12.65 Ex VAT £15.19 Inc VAT
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  • 15L Steel Hydraulic Tank 123mm (AC) Neck Flange - Approved Hydraulics Limited
    Regular price £40.50 Ex VAT £48.60 Inc VAT
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    15L Steel Hydraulic Tank 123mm (AC) Neck Flange

    Key Features

    • Capacity: 15 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 £40.50 Ex VAT £48.60 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.

  • 12L Steel Hydraulic Tank 123mm (AC) Neck Flange - Approved Hydraulics Limited
    Regular price £38.25 Ex VAT £45.90 Inc VAT
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    12L Steel Hydraulic Tank 123mm (AC) Neck Flange

    Key Features

    • Capacity: 12 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 £38.25 Ex VAT £45.90 Inc VAT
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  • 10L Steel Hydraulic Tank 123mm (AC) Neck Flange - Approved Hydraulics Limited
    Regular price £36.45 Ex VAT £43.74 Inc VAT
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    10L Steel Hydraulic Tank 123mm (AC) Neck Flange

    Key Features

    • Capacity: 10 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 £36.45 Ex VAT £43.74 Inc VAT
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  • 8L Steel Hydraulic Tank 123mm (AC) Neck Flange - Approved Hydraulics Limited
    Regular price £35.31 Ex VAT £42.38 Inc VAT
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    8L Steel Hydraulic Tank 123mm (AC) Neck Flange

    Key Features

    • Capacity: 8 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 £35.31 Ex VAT £42.38 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 15L Steel Hydraulic Tank 120mm (DC) Neck Flange - Approved Hydraulics Limited
    Regular price £40.50 Ex VAT £48.60 Inc VAT
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    15L Steel Hydraulic Tank 120mm (DC) Neck Flange

    Key Features

    • Capacity: 15 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 £40.50 Ex VAT £48.60 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 10L Steel Hydraulic Tank 120mm (DC) Neck Flange - Approved Hydraulics Limited
    Regular price £36.45 Ex VAT £43.74 Inc VAT
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    10L Steel Hydraulic Tank 120mm (DC) Neck Flange

    Key Features

    • Capacity: 10 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 £36.45 Ex VAT £43.74 Inc VAT
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 4L Steel Hydraulic Tank 120mm (DC) Neck Flange - Approved Hydraulics Limited
    Regular price £29.44 Ex VAT £35.33 Inc VAT
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    4L Steel Hydraulic Tank 120mm (DC) Neck Flange

    Key Features

    • Capacity: 4 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 £29.44 Ex VAT £35.33 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Starter Solenoid Cables & Copper bar kit - Approved Hydraulics Limited
    Regular price £3.13 Ex VAT £3.76 Inc VAT
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    Starter Solenoid Cables & Copper bar kit

    Key Features

    • Kit contents: starter cabling ; copper link bar
    • Application: dc power pack starter ; solenoid wiring
    • Voltage: 12 vdc ; 24 vdc systems
    • Use: compact power units ; tail lifts ; tippers ; lifts
    • Hardware: ring terminals ; fixings as supplied
    Regular price £3.13 Ex VAT £3.76 Inc VAT
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  • Biodegradable Hydraulic Oil ISO32, 1000 Litres IBC - Approved Hydraulics Limited

    POA

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    Biodegradable Hydraulic Oil ISO32, 1000 Litres IBC

    Key Features

    • Viscosity grade: iso vg 32
    • Base fluid: synthetic ; naturally occuring esters ; ashless additive package
    • Properties: high viscosity index ; anti wear ; anti oxidant ; anti foam ; anti corrosion
    • Environmental: virtually non toxic ; biodegradable
    • Packaging: 1000 l ibc
    • Use: hydraulics in environmentally sensitive areas ; marine ; forestry ; civil works

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydraulic Oil ISO 32, 1000 Litres IBC - Approved Hydraulics Limited
    Regular price £2,475.00 Ex VAT £2,970.00 Inc VAT
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    Hydraulic Oil ISO 32, 1000 Litres IBC

    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: 1000 l ibc
    Regular price £2,475.00 Ex VAT £2,970.00 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • CETOP 3 Steel Manifold with Relief Cavity - P&T 1/2" - A&B 3/8" - Approved Hydraulics Limited
    Regular price From £59.10 Ex VAT From £70.92 Inc VAT
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    CETOP 5 - Steel Manifold with Relief Cavity - P&T 3/4" - A&B 1/2"

    Key Features

    • Standard: cetop 5 ; iso 4401-05 ; ng10
    • Ports: p ; t 3/4" bspp ; a ; b 1/2" bspp
    • Relief cavity: main pressure relief cavity provided ; blanking plug when no cartridge
    • Max working pressure: 315 bar
    • Circuit: parallel
    • Stations: 1 ; 2 ; 3 ; 4 ; 5 ; 6 options
    • Material: steel
    • Use: mounting of ng10 directional valves ; high flow manifolds
    Regular price From £59.10 Ex VAT From £70.92 Inc VAT
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  • 3/8" Normally Open Poppet Valve 2/2 24vDC Solenoid Operated with connector
    Regular price £113.59 Ex VAT £136.31 Inc VAT
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    3/8" Normally Open Poppet Valve 2/2 24vDC Solenoid Operated with connector

    Key Features

    • Valve type: 2/2 poppet ; normally open
    • Port size: 3/8"
    • Actuation: 24 vdc solenoid
    • Connector: din plug included
    • Use: line mounted isolation / bypass
    Regular price £113.59 Ex VAT £136.31 Inc VAT
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  • 1/8" BSP Female Swivel Blanking Cap - Approved Hydraulics Limited
    Regular price £7.36 Ex VAT £8.84 Inc VAT
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    3/4" BSP Female Swivel Blanking Cap

    Key Features

    • Thread size: 3/4 in BSP female swivel
    • Function: Blanking cap to seal unused ports or hose ends
    • Connection style: Swivel nut style for easy installation and alignment
    • Sealing: Designed to seal against mating face with washer or bonded seal
    • Typical use: Hydraulic system maintenance; testing; and contamination prevention
    • Application: BSP threaded fittings and adaptors in fluid power systems
    Regular price £7.36 Ex VAT £8.84 Inc VAT
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £21.04 Ex VAT £25.25 Inc VAT
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    Cylinder seals kit 30-50/60 series 202/302/402/502/591/610/640

    Key Features

    • Scope: seal kit for hydraulic cylinders
    • Sizes: 30-50/60
    • Series: 202/302/402/502/591/610/640
    • Use: renew piston ; rod ; wiper seals
    • Application: hydraulic component
    Regular price £21.04 Ex VAT £25.25 Inc VAT
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  • Shim for valve sections  50/80 Ltr
    Regular price £1.70 Ex VAT £2.05 Inc VAT
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    Shim for valve sections 50/80 Ltr

    Key Features

    • Part number: 20032365
    • Compatibility: Valve sections 50L; 80L flow families
    • Component type: Shim for sectional valve assembly
    • Function: Adjusts clearances and improves section sealing alignment
    • Maintenance use: Replacement part during valve rebuild or section service
    • Performance impact: Helps smooth spool operation and sealing performance
    Regular price £1.70 Ex VAT £2.05 Inc VAT
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  • Shim for valve sections  100/150 Ltr
    Regular price £1.70 Ex VAT £2.05 Inc VAT
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    Shim for valve sections 100/150 Ltr

    Key Features

    • Part number: 20032366
    • Compatibility: Valve sections 100L; 150L flow families
    • Component type: Shim for sectional valve assembly
    • Function: Adjusts clearances and improves section sealing alignment
    • Maintenance use: Replacement part during valve rebuild or section service
    • Performance impact: Helps smooth spool operation and sealing performance
    Regular price £1.70 Ex VAT £2.05 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) 6 Bank M8x1.25 318mm long

    Key Features

    • Valve family: 50l sectional valve
    • Configuration: 6 bank
    • Rods per kit: 3
    • Thread: m8x1.25
    • Rod length: 318 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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  • 50L TIE ROD KIT (3 Rods / kit) 10 Bank M8x1.25 470mm long - Approved Hydraulics Limited
    Regular price £15.23 Ex VAT £18.28 Inc VAT
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    50L TIE ROD KIT (3 Rods / kit) 8 Bank M8x1.25 394mm long

    Key Features

    • Valve family: 50l sectional valve
    • Configuration: 8 bank
    • Rods per kit: 3
    • Thread: m8x1.25
    • Rod length: 394 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 £15.23 Ex VAT £18.28 Inc VAT
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  • 80L lever box with stroke limiter
    Regular price £14.51 Ex VAT £17.42 Inc VAT
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    80L lever box with stroke limiter

    Key Features

    • Feature: mechanical stroke limiter
    • Compatibility: 80 l control valve
    • Use: limit spool travel ; tune flow
    • Application: hydraulic component
    • Application: hydraulic component
    Regular price £14.51 Ex VAT £17.42 Inc VAT
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  • 120L Double Acting Spool
    Regular price £23.94 Ex VAT £28.73 Inc VAT
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    120L Double Acting Spool

    Key Features

    • Spool: double acting ; 3 positions
    • Series: 120 l monoblock valve
    • Neutral: A ; B blocked in neutral
    • Use: cylinder control
    • Application: hydraulic component
    Regular price £23.94 Ex VAT £28.73 Inc VAT
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  • 50L TIE ROD KIT (3 Rods / kit) 4 Bank  M8x1.25 242mm long - Approved Hydraulics Limited
    Regular price £13.55 Ex VAT £16.27 Inc VAT
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    50L TIE ROD KIT (3 Rods / kit) 4 Bank M8x1.25 242mm long

    Key Features

    • Valve family: 50l sectional valve
    • Configuration: 4 bank
    • Rods per kit: 3
    • Thread: m8x1.25
    • Rod length: 242 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 £13.55 Ex VAT £16.27 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.