• 1/4" BSPT Tapered x 1/4" BSPT Tapered Adaptor
    Regular price £3.08
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    • Delivery to UK & Ireland

    1/4" BSPT Tapered x 1/4" BSPT Tapered Adaptor

    Key Features

    • Type: adaptor converting parallel BSPP to tapered BSPT
    • Threads: 1/4 to 1/4 BSP
    • Sealing: taper end seals with thread sealant; parallel uses washer or bonded seal
    • Material: plated carbon steel
    • Use: connect BSPP components to BSPT ports
    Regular price £3.08
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 3/8" BSP Female x Female x Female Tee
    Regular price £19.60
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    • Delivery to UK & Ireland

    3/8" BSP Female x Female x Female Tee

    Key Features

    • Type: straight adaptor (BSP adaptor)
    • Threads: 3/8 BSP
    • 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 £19.60
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/2" BSP Male x 3/8" BSP Fixed Female Extended Adaptor - Approved Hydraulics Limited
    Regular price £2.70
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    • Delivery to UK & Ireland

    3/8" BSP Male x 3/8" BSP Fixed Female Extended Adaptor

    Key Features

    • Type: male to fixed female extended adaptor
    • Threads: 3/8 to 3/8 BSP
    • Body: extended length to clear guards or deep ports
    • Material: plated carbon steel for hydraulic service
    • Use: adapt port gender/size and increase spanner access
    Regular price £2.70
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 3/4" BSP Male for Bonded Seal x 3/4" BSP Female Swivel 90° Compact Elbow
    Regular price £34.67
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    • Delivery to UK & Ireland

    3/4" BSP Male for Bonded Seal x 3/4" BSP Female Swivel 90° Compact Elbow

    Key Features

    • Type: swivel adaptor female to female
    • Threads: 3/4 to 3/4 BSP
    • Swivel: captive nuts allow hose connection without twisting
    • Seal: flat-faced or washered seal depending on variant
    • Use: hose-to-hose connection where orientation matters
    Regular price £34.67
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 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.

  • 1/4" BSP Female - 1/4" BSP Female 90° Compact Swivel Adaptor
    Regular price £16.33
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    • Delivery to UK & Ireland

    1/4" BSP Female - 1/4" BSP Female 90° Compact Swivel Adaptor

    Key Features

    • Type: swivel adaptor (female to female)
    • Threads: 1/4 to 1/4 BSP
    • Swivel: captive nut allows hose connection without twisting
    • Seal: flat-faced or cone/washer per variant
    • Use: connect hoses where rotation during assembly is restricted
    Regular price £16.33
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/8" BSP Female Swivel Blanking Cap
    Regular price £5.68
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    • Delivery to UK & Ireland

    1/8" BSP Female Swivel Blanking Cap

    Key Features

    • Type: female swivel blanking cap
    • Thread: 1/8 BSP
    • Function: seals a swivel female hose end when not in use
    • Material: plated steel with hex for tightening
    • Use: protect against contamination and leakage
    Regular price £5.68
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 3/4" BSP Female Swivel Blanking Cap
    Regular price £8.84
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    • Delivery to UK & Ireland

    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 £8.84
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/2" BSP Male x 3/8" BSP Fixed Female Extended Adaptor - Approved Hydraulics Limited
    Regular price £2.99
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    • Delivery to UK & Ireland

    3/8" BSP Male x 1/2" BSP Fixed Female Extended Adaptor

    Key Features

    • Type: male to fixed female extended adaptor
    • Threads: 3/8 to 1/2 BSP
    • Body: extended length to clear guards or deep ports
    • Material: plated carbon steel for hydraulic service
    • Use: adapt port gender/size and increase spanner access
    Regular price £2.99
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 3/4" BSP x 3/4" BSP Bulkhead Adaptor with Locknut - Approved Hydraulics Limited
    Regular price £21.28
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    • Delivery to UK & Ireland

    3/8" BSP x 3/8" BSP Bulkhead Adaptor with Locknut

    Key Features

    • Type: bulkhead adaptor with locknut for panel/tank pass-through
    • Threads: 3/8 to 3/8 BSP
    • Hardware: includes locknut for secure clamping
    • Material: plated carbon steel
    • Use: route hose/pipe through guards or reservoirs cleanly
    Regular price £21.28
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/2" BSP Male x 1 1/4" BSP Male Adaptor
    Regular price £45.85
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    • Delivery to UK & Ireland

    1/2" BSP Male x 1 1/4" BSP Male Adaptor

    Key Features

    • Type: straight adaptor (BSP adaptor)
    • Threads: 1/2 to 1 1/4 BSP
    • 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 £45.85
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/2" BSP Male x 1/2" BSP Female Swivel Adaptor - Approved Hydraulics Limited
    Regular price £9.71
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    • Delivery to UK & Ireland

    1/2" BSP Male x 5/8" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor female to female
    • Threads: 1/2 to 5/8 BSP
    • Swivel: captive nuts allow hose connection without twisting
    • Seal: flat-faced or washered seal depending on variant
    • Use: hose-to-hose connection where orientation matters
    Regular price £9.71
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 3/4" BSP Female Swivel x 3/4" BSP Female Swivel
    Regular price £11.58
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    • Delivery to UK & Ireland

    3/4" BSP Female Swivel x 3/4" BSP Female Swivel

    Key Features

    • Type: swivel adaptor female to female
    • Threads: 3/4 to 3/4 BSP
    • Swivel: captive nuts allow hose connection without twisting
    • Seal: flat-faced or washered seal depending on variant
    • Use: hose-to-hose connection where orientation matters
    Regular price £11.58
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/4" BSP Male for Bonded Seal x 1/4" BSP Female Swivel 90° Compact Elbow
    Regular price £14.08
    • All Items Guaranteed
    • Delivery to UK & Ireland

    1/4" BSP Male for Bonded Seal x 1/4" BSP Female Swivel 90° Compact Elbow

    Key Features

    • Type: swivel adaptor female to female
    • Threads: 1/4 to 1/4 BSP
    • Swivel: captive nuts allow hose connection without twisting
    • Seal: flat-faced or washered seal depending on variant
    • Use: hose-to-hose connection where orientation matters
    Regular price £14.08
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £24.04
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    • Delivery to UK & Ireland

    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 £24.04
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Shim for valve sections  50/80 Ltr
    Regular price £1.90
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    • Delivery to UK & Ireland

    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 £1.90
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Shim for valve sections  100/150 Ltr
    Regular price £1.90
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    • Delivery to UK & Ireland

    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 £1.90
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • flat Washer M16
    Regular price £0.42
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    • Delivery to UK & Ireland

    flat Washer M16

    Key Features

    • Part number: FEMUNI6592
    • Fastener size: M16
    • Washer type: Flat washer for load distribution
    • Function: Spreads clamp load and protects mating surfaces
    • Typical use: FEMAC flail and attachment assembly hardware
    • Installation: Used under bolt head or nut with M16 threaded fasteners
    Regular price £0.42
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 50L TIE ROD KIT (3 Rods / kit) 6 Bank M8x1.25 318mm long
    Regular price £15.36
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    • Delivery to UK & Ireland

    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 £15.36
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 12V DC Coil-22W-13mm hole-39mm long for  45 - 50L - 80L-90L-100L-150L Unloader Valve
    Regular price £24.48
    • All Items Guaranteed
    • Delivery to UK & Ireland

    12V DC Coil-22W-13mm hole-39mm long for 45 - 50L - 80L-90L-100L-150L Unloader Valve

    Key Features

    • Voltage: 12 vdc
    • Power: 22 w
    • Bore: 13 mm through-hole
    • Body length: 39 mm
    • Duty: 100% ed
    • Use: unloader valve actuation
    Regular price £24.48
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cone Splitter Stud For Attaching the Main Cone to the Drive Shaft  M14 x 12.5 Grade - Approved Hydraulics Limited
    Regular price £10.86
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    • Delivery to UK & Ireland

    Cone Splitter Stud For Attaching the Main Cone to the Drive Shaft M14 x 12.5 Grade

    Key Features

    • Fastener: cone-to-shaft stud
    • Thread: M14
    • Strength grade: 12.5 (per listing)
    • Material: high tensile alloy steel
    • Use: secures main cone to drive shaft under high torque
    Regular price £10.86
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/4" BSP Male to 1/2 BSP Female Pressure Guage Adaptor - Approved Hydraulics Limited
    Regular price £8.16
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    • Delivery to UK & Ireland

    1/4" BSP Male to 1/4 BSP Female Pressure Guage Adaptor

    Key Features

    • Type: pressure gauge adaptor
    • Threads: 1/4 to 1/4 BSP
    • Seat: 60° cone or flat seat depending on gauge port style
    • Material: plated carbon steel for hydraulic service
    • Use: connect panel or test gauges; transmitters or sensors
    Regular price £8.16
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/4" BSP Male to 1/2 BSP Female Pressure Guage Adaptor - Approved Hydraulics Limited
    Regular price £4.80
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    • Delivery to UK & Ireland

    1/2" BSP Male to 1/4 BSP Female Pressure Guage Adaptor

    Key Features

    • Type: pressure gauge adaptor
    • Threads: 1/2 to 1/4 BSP
    • Seat: 60° cone or flat seat depending on gauge port style
    • Material: plated carbon steel for hydraulic service
    • Use: connect panel or test gauges; transmitters or sensors
    Regular price £4.80
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/4" BSP Male to 1/2 BSP Female Pressure Guage Adaptor - Approved Hydraulics Limited
    Regular price £4.80
    • All Items Guaranteed
    • Delivery to UK & Ireland

    1/4" BSP Male to 1/2 BSP Female Pressure Guage Adaptor

    Key Features

    • Type: pressure gauge adaptor
    • Threads: 1/4 to 1/2 BSP
    • Seat: 60° cone or flat seat depending on gauge port style
    • Material: plated carbon steel for hydraulic service
    • Use: connect panel or test gauges; transmitters or sensors
    Regular price £4.80
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Baltrotors Bronze Bush - 45mm (Pair) - Approved Hydraulics Limited
    Regular price £33.53
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

    Baltrotors Bronze Bush - 45mm (Pair)

    Key Features

    • Component: bronze bush pair for 45 mm pins
    • Material: oil-impregnated or tin bronze for low friction
    • Use: replacement for link heads and flanges
    • Benefit: good anti-seize properties; machinable
    • Service: grease compatible with bronze
    Regular price £33.53
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

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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.