• Hydra Part Steel Tanks For Hydraulic Hand Pumps - Approved Hydraulics
    Regular price From £17.25 Ex VAT From £20.71 Inc VAT
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    Steel Tanks For Hydraulic Hand Pumps

    Key Features

    • Capacities: 1 l ; 3 l ; 5 l options
    • Material: painted steel
    • Includes: suction pipe ; breather
    • Intended use: reservoir for manual hydraulic hand pumps
    • Mounting: direct to hand pump base
    Regular price From £17.25 Ex VAT From £20.71 Inc VAT
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  • Hydra Part 63mm Glycerine Hydraulic Pressure Gauge 0-1400 Psi (100 Bar) 1/4" Rear Entry - Approved Hydraulics
    Regular price £16.73 Ex VAT £20.08 Inc VAT
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    63mm Glycerine Hydraulic Pressure Gauge 0-1400 Psi (100 Bar) 1/4" Rear Entry

    Key Features

    • Dial: 63 mm
    • Filling: glycerine filled
    • Entry: 1/4\" bsp rear entry
    • Scale: psi ; bar dual scale
    • Casing: stainless steel
    • Pressure range: 0-1400 psi ( 100 bar )
    • Intended use: visual pressure readout on hydraulic circuits
    Regular price £16.73 Ex VAT £20.08 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Out of Stock
    Dual Pilot Operated Check Valve 1/2"BSP In Line - 35Lpm - Approved Hydraulics Limited
    Regular price £68.90 Ex VAT £82.68 Inc VAT
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    Dual Pilot Operated Check Valve 1/2"BSP In Line - 35Lpm

    Key Features

    • Type: double pilot operated check valve inline
    • Port size: 1/2' bsp
    • Rated flow: 35 l/min
    • Typical max pressure: up to 350 bar
    • Function: locks actuator both directions ; opens with pilot pressure
    Regular price £68.90 Ex VAT £82.68 Inc VAT
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  • TEC TEC Single Phase Electric Motors - 2 Pole, 3000rpm, 240vAC (PERMANENT CAP) - Approved Hydraulics
    Regular price From £59.99 Ex VAT From £71.99 Inc VAT
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    TEC Single Phase Electric Motors - 2 Pole, 3000rpm, 230vAC (PERMANENT CAP)

    Key Features

    • Type: single phase permanent capacitor psc induction motor
    • Speed: 2 pole 3000 rpm nominal at 50 hz
    • Starting: low current ; moderate starting torque
    • Enclosure: tefc ip55 aluminium frame
    • Insulation: class f with ptc 130°c thermal
    • Duty: s1 continuous ic411 cooling
    • Voltage: 230 ; 400 vac 50 hz three phase or 230 vac single phase per model
    • Mounting: b3 foot ; b5 flange ; b14 face options
    • Standards: iec 60034 ; ie3 or ie2 efficiency classes
    Regular price From £59.99 Ex VAT From £71.99 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.

  • Hydraulic Oil ISO 32, 20 Litres - Approved Hydraulics Limited
    Regular price £68.78 Ex VAT £82.54 Inc VAT
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    Hydraulic Oil ISO 32, 20 Litres

    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: 20 l drum
    Regular price £68.78 Ex VAT £82.54 Inc VAT
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  • CETOP 3 Coil  -24VDC Coil (23mm Bore x 50mm long) - Approved Hydraulics Limited
    Regular price £12.61 Ex VAT £15.14 Inc VAT
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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 £12.61 Ex VAT £15.14 Inc VAT
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  • Hydra Part Group 1 Hydraulic Gear Pumps with 1:8 Taper Shaft - Approved Hydraulics
    Regular price From £62.86 Ex VAT From £75.44 Inc VAT
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    Group 1 Hydraulic Gear Pumps with 1:8 Taper Shaft (Threaded Ports)

    Key Features

    • Type: bi rotational external gear pump
    • Group: 1
    • Shaft: 1.8 taper
    • Configuration: single ; double ; triple options
    • Ports: threaded bsp options
    • Construction: cast iron end covers ; aluminium body
    • Applications: mobile hydraulics ; industrial power units
    Regular price From £62.86 Ex VAT From £75.44 Inc VAT
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  • Hydra Part CETOP 5 Double Solenoid Control Valve NG10, P to T - A & B Blocked - Approved Hydraulics
    Regular price From £100.46 Ex VAT From £120.56 Inc VAT
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    CETOP 5 Double Solenoid Control Valve NG10, P to T - A & B Blocked

    Key Features

    • Centre spool: p to t ; a and b blocked
    • Interface: iso 4401-05 cetop 5 ng10
    • Max flow: 120 lpm
    • Max pressure: p ; a ; b 315 bar
    • Coils: 12 vdc ; 24 vdc ; 110 vac 50hz ; 220 vac 50hz
    • Ingress protection: ip65
    • Connector: din plug with led
    • Manual override: standard on all valves
    Regular price From £100.46 Ex VAT From £120.56 Inc VAT
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  • Scanreco Mini Transmitter Emergency Stop Button - Approved Hydraulics Limited
    Regular price £60.84 Ex VAT £73.01 Inc VAT
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    Scanreco Mini Transmitter Emergency Stop Button

    Key Features

    • Type: latching emergency stop
    • Use: scanreco mini transmitter
    • Function: twist ; pull reset typical
    • Note: oem replacement part
    • Application: hydraulic attachment component
    Regular price £60.84 Ex VAT £73.01 Inc VAT
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  • Out of Stock
    Scanreco Antenna - Approved Hydraulics Limited
    Regular price £49.01 Ex VAT £58.82 Inc VAT
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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 £49.01 Ex VAT £58.82 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Hydra Part 100mm Glycerine Hydraulic Pressure Gauge 0-6000 Psi (400 Bar) 1/2" Bottom Entry - Approved Hydraulics
    Regular price £18.91 Ex VAT £22.70 Inc VAT
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    100mm Glycerine Hydraulic Pressure Gauge 0-6000 Psi (400 Bar) 1/2" Bottom Entry

    Key Features

    • Dial: 100 mm
    • Filling: glycerine filled
    • Entry: 1/2\" bsp bottom entry
    • Scale: psi ; bar dual scale
    • Casing: stainless steel
    • Pressure range: 0-6000 psi ( 400 bar )
    • Intended use: visual pressure readout on hydraulic circuits
    Regular price £18.91 Ex VAT £22.70 Inc VAT
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    Hydra Part 63mm Glycerine Hydraulic Pressure Gauge 0-2000 Psi (140 Bar) 1/4" Rear Entry - Approved Hydraulics
    Regular price £8.25 Ex VAT £9.90 Inc VAT
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    63mm Glycerine Hydraulic Pressure Gauge 0-2000 Psi (140 Bar) 1/4" Rear Entry

    Key Features

    • Dial: 63 mm
    • Filling: glycerine filled
    • Entry: 1/4\" bsp rear entry
    • Scale: psi ; bar dual scale
    • Casing: stainless steel
    • Pressure range: 0-2000 psi ( 140 bar )
    • Intended use: visual pressure readout on hydraulic circuits
    Regular price £8.25 Ex VAT £9.90 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Hydra Part CETOP 3 Single Solenoid Control Valve NG06 - P to A & B to T (X - 11) - Approved Hydraulics
    Regular price £46.80 Ex VAT £56.16 Inc VAT
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    CETOP 3 Single Solenoid Control Valve NG06 - P to A & B to T (X - 11)

    Key Features

    • Centre spool: p to a ; b to t
    • Solenoid: single solenoid
    • Interface: iso 4401-03 cetop 3 ng06
    • Max flow: 60 lpm
    • Max pressure: p ; a ; b 315 bar ; t 160 bar
    • Coils: 12 vdc ; 24 vdc ; 110 vac 50hz ; 220 vac 50hz
    • Ingress protection: ip65
    • Connector: din plug with led
    • Manual override: standard on all valves
    Regular price £46.80 Ex VAT £56.16 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • 120L 1 Bank Monoblock Valve 3/4" Ported Double Acting Spring Return - Approved Hydraulics Limited
    Regular price £165.85 Ex VAT £199.03 Inc VAT
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    120L 1 Bank Monoblock Valve 3/4" Ported Double Acting Spring Return

    Key Features

    • ["Nominal flow: 120 lpm"
    • Ports: 3/4" bsp p ; a ; b ; t
    • Spool: double acting ; 3 position spring return
    • Working pressure: 250 bar max
    • Circuit: parallel ; hp carry over optional by kit
    • Mounting: 3 x 11 mm holes ; base mount
    • "Operating temp: -30 c to +80 c"]
    Regular price £165.85 Ex VAT £199.03 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Hydra Part 63mm Glycerine Hydraulic Pressure Gauge 0-6000 Psi (400 Bar) 1/4" Rear Entry - Approved Hydraulics
    Regular price £16.73 Ex VAT £20.08 Inc VAT
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    • Delivery to UK & Ireland

    63mm Glycerine Hydraulic Pressure Gauge 0-6000 Psi (400 Bar) 1/4" Rear Entry

    Key Features

    • Dial: 63 mm
    • Filling: glycerine filled
    • Entry: 1/4\" bsp rear entry
    • Scale: psi ; bar dual scale
    • Casing: stainless steel
    • Pressure range: 0-6000 psi ( 400 bar )
    • Intended use: visual pressure readout on hydraulic circuits
    Regular price £16.73 Ex VAT £20.08 Inc VAT
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    Hydra Part Poppet Check Valve 1/4" 30Lpm, 400 Bar Max Pressure - Approved Hydraulics
    Regular price £7.85 Ex VAT £9.43 Inc VAT
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    Poppet Check Valve 1/4" 30Lpm, 400 Bar Max Pressure

    Key Features

    • Type: inline poppet check valve
    • Port size: 1/4' bsp
    • Max flow: 30 l/min
    • Max pressure: 400 bar
    • Cracking pressure: 0.5 bar typical
    • Function: permits flow one way ; blocks reverse
    Regular price £7.85 Ex VAT £9.43 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Out of Stock
    Hydra Part 100mm Glycerine Hydraulic Pressure Gauge 0-1400 Psi (100 Bar) 1/2" Bottom Entry - Approved Hydraulics
    Regular price £18.91 Ex VAT £22.70 Inc VAT
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    • Delivery to UK & Ireland

    100mm Glycerine Hydraulic Pressure Gauge 0-1400 Psi (100 Bar) 1/2" Bottom Entry

    Key Features

    • Dial: 100 mm
    • Filling: glycerine filled
    • Entry: 1/2\" bsp bottom entry
    • Scale: psi ; bar dual scale
    • Casing: stainless steel
    • Pressure range: 0-1400 psi ( 100 bar )
    • Intended use: visual pressure readout on hydraulic circuits
    Regular price £18.91 Ex VAT £22.70 Inc VAT
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Hydra Part 63mm Glycerine Hydraulic Pressure Gauge 0-1400 Psi (100 Bar) 1/4" Bottom Entry - Approved Hydraulics
    Regular price £16.14 Ex VAT £19.37 Inc VAT
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    63mm Glycerine Hydraulic Pressure Gauge 0-1400 Psi (100 Bar) 1/4" Bottom Entry

    Key Features

    • Dial diameter: 63 mm
    • Connection: 1/4' bsp bottom entry
    • Case: stainless steel aisi 304
    • Window: acrylic
    • Fill: glycerine 99.5 percent
    • Accuracy: class 1.6
    • Range: 0-1400 psi (100 bar) 1/4' bottom entry
    Regular price £16.14 Ex VAT £19.37 Inc VAT
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  • Hydra Part 63mm Glycerine Hydraulic Pressure Gauge 0-360 Psi (25 Bar) 1/4" Bottom Entry - Approved Hydraulics
    Regular price £8.25 Ex VAT £9.90 Inc VAT
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    63mm Glycerine Hydraulic Pressure Gauge 0-360 Psi (25 Bar) 1/4" Bottom Entry

    Key Features

    • Dial diameter: 63 mm
    • Connection: 1/4' bsp bottom entry
    • Case: stainless steel aisi 304
    • Window: acrylic
    • Fill: glycerine 99.5 percent
    • Accuracy: class 1.6
    • Range: 0-360 psi (25 bar) 1/4' bottom entry
    Regular price £8.25 Ex VAT £9.90 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Dual Pilot Operated Check Valve 1/4"BSP In Line - 20Lpm - Approved Hydraulics Limited
    Regular price £44.15 Ex VAT £52.99 Inc VAT
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    Dual Pilot Operated Check Valve 1/4"BSP In Line - 20Lpm

    Key Features

    • Type: double pilot operated check valve inline
    • Port size: 1/4' bsp
    • Function: locks cylinder in both directions until pilot pressure applied
    • Typical max pressure: up to 300 to 350 bar
    • Typical cracking: 0.5 bar check with pilot release
    Regular price £44.15 Ex VAT £52.99 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • BSPP One Way Flow Control Valves - Approved Hydraulics Limited
    Regular price From £18.30 Ex VAT From £21.97 Inc VAT
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    BSPP One Way Flow Control Valves

    Key Features

    • Type: one-way flow control (throttle/check)
    • Ports: as specified
    • Function: free flow one direction; metered flow opposite via needle
    • Body: barrel pattern for in-line mounting
    • Use: control extend or retract speed on cylinders
    Regular price From £18.30 Ex VAT From £21.97 Inc VAT
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  • 3/8 BSPP bi-directional flow control valve - Approved Hydraulics Limited
    Regular price £16.54 Ex VAT £19.85 Inc VAT
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    1/4 BSPP Bi-Directional Flow Control Valve

    Key Features

    • Type: straight adaptor (BSP threading per title)
    • Threads: 1/4 thread
    • Standard: BSPP parallel per ISO 228 unless otherwise specified
    • Material: plated carbon steel for hydraulic service
    • Use: join hoses; valves; pipe runs or adapt port sizes
    Regular price £16.54 Ex VAT £19.85 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Out of Stock
    10 Metre Scanreco Control Cable (5 Pin) - Approved Hydraulics Limited
    Regular price £123.33 Ex VAT £148.00 Inc VAT
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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 £123.33 Ex VAT £148.00 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Biodegradable Hydraulic Oil, 5 Litres - Approved Hydraulics Limited
    Regular price £29.50 Ex VAT £35.40 Inc VAT
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    Biodegradable Hydraulic Oil, 5 Litres

    Key Features

    • Type: Rapidly biodegradable hydraulic fluid
    • Viscosity options: ISO VG 32 ; ISO VG 46
    • Base chemistry: Plant based or synthetic ester depending on grade
    • Biodegradability: Typically > 90 percent per CEC L-33-T-82
    • Use: For environmental applications where leaks must minimise impact
    • Pack size: 5 Litres
    Regular price £29.50 Ex VAT £35.40 Inc VAT
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    • 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.