• 1/4" BSP Male x 1/4" BSPT Tapered Adaptor
    Regular price £3.13
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    1/4" BSP Male x 1/4" BSPT Tapered Adaptor

    Key Features

    • Type: parallel-to-taper adaptor for BSP connections
    • Standards: BSPP (ISO 228) to BSPT (ISO 7) depending on ends
    • Threads: 1/4 to 1/4 BSP
    • Sealing: taper thread seals with thread sealant; parallel with washer/bonded seal
    • Use: connect tapered ports to parallel hose/valve fittings
    Regular price £3.13
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/2" BSP Male x 1/2" BSPT Tapered Adaptor
    Regular price £4.33
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    • Delivery to UK & Ireland

    1/2" BSP Male x 1/2" BSPT Tapered Adaptor

    Key Features

    • Type: parallel-to-taper adaptor for BSP connections
    • Standards: BSPP (ISO 228) to BSPT (ISO 7) depending on ends
    • Threads: 1/2 to 1/2 BSP
    • Sealing: taper thread seals with thread sealant; parallel with washer/bonded seal
    • Use: connect tapered ports to parallel hose/valve fittings
    Regular price £4.33
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    • 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 £7.07
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    1/2" BSP Male x 3/8" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor (male to female)
    • Threads: 1/2 to 3/8 BSP
    • Swivel: captive nut allows hose connection without twisting
    • Seal: cone/washer seal depending on variant
    • Use: connect hoses where rotation during assembly is restricted
    Regular price £7.07
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/2" BSP Female x Female x Female Tee
    Regular price £26.12
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    1/2" BSP Female x Female x Female Tee

    Key Features

    • Type: BSP tee adaptor
    • Connections: three female ports
    • Threads: 1/2 BSP
    • Material: plated carbon steel for hydraulic service
    • Use: split or combine lines; add instruments or auxiliary circuits
    Regular price £26.12
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  • 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.

  • 3/4" BSP x 3/4" BSP Bulkhead Adaptor with Locknut - Approved Hydraulics Limited
    Regular price £23.15
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    1/2" BSP Male x 1/2" BSP Bulkhead Adaptor with Locknut

    Key Features

    • Type: bulkhead adaptor with locknut for panel/tank pass-through
    • Threads: 1/2 to 1/2 BSP
    • Hardware: includes locknut for secure clamping
    • Material: plated carbon steel
    • Use: route hose/pipe through guards or reservoirs cleanly
    Regular price £23.15
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  • 3/8" BSP Male x 1" BSP Male Adaptor
    Regular price £16.48
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    3/8" BSP Male x 1" BSP Male Adaptor

    Key Features

    • Type: straight adaptor (male to female)
    • Threads: 3/8 to 1 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 £16.48
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    • 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 £6.59
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    1/8" BSP Male x 1/4" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor (male to female)
    • Threads: 1/8 to 1/4 BSP
    • Swivel: captive nut allows hose connection without twisting
    • Seal: cone/washer seal depending on variant
    • Use: connect hoses where rotation during assembly is restricted
    Regular price £6.59
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    • 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 £6.59
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    • Delivery to UK & Ireland

    1/4" BSP Male x 1/8" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor (male to female)
    • Threads: 1/4 to 1/8 BSP
    • Swivel: captive nut allows hose connection without twisting
    • Seal: cone/washer seal depending on variant
    • Use: connect hoses where rotation during assembly is restricted
    Regular price £6.59
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 3/4" BSP Male x 3/4"BSP Swivel Female x 3/4" BSP Male Branch Tee Adaptor
    Regular price £49.21
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    3/4" BSP Male x 3/4"BSP Swivel Female x 3/4" BSP Male Branch Tee Adaptor

    Key Features

    • Type: branch tee adaptor for hydraulic lines
    • Connections: BSP threading per title
    • Threads: 3/4 to 3/4 BSP
    • Standard: BSPP parallel per ISO 228 (female); bonded seal on male where applicable
    • Use: create auxiliary take-off while maintaining main flow
    Regular price £49.21
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  • 5/8" BSP Male for Bonded Seal x 5/8" BSP Female Swivel 90° Compact Elbow
    Regular price £27.95
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    5/8" BSP Male for Bonded Seal x 5/8" BSP Female Swivel 90° Compact Elbow

    Key Features

    • Type: 90° elbow adaptor (male to male)
    • Threads: 5/8 to 5/8 BSP
    • Body: compact body for routing clearance
    • Construction: forged carbon steel; zinc plated
    • Use: change hose direction while maintaining service access
    Regular price £27.95
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  • 1/2" BSP Male x 1/2" BSP Female Swivel 45° Swept Elbow
    Regular price £11.84
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    1/2" BSP Male x 1/2" BSP Female Swivel 45° Swept Elbow

    Key Features

    • Type: 45° elbow adaptor
    • Threads: 1/2 to 1/2 BSP
    • Body: swept radius for tight routing
    • Construction: forged carbon steel; zinc plated
    • Use: directional change with lower pressure drop than 90°
    Regular price £11.84
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  • 1/2" BSP X 1" BSPT Tapered ADAPTOR
    Regular price £14.32
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    • Delivery to UK & Ireland

    1/2" BSP X 1" BSPT Tapered ADAPTOR

    Key Features

    • Type: parallel-to-taper adaptor for BSP connections
    • Standards: BSPP (ISO 228) to BSPT (ISO 7) depending on ends
    • Threads: 1/2 to 1 BSP
    • Sealing: taper thread seals with thread sealant; parallel with washer/bonded seal
    • Use: connect tapered ports to parallel hose/valve fittings
    Regular price £14.32
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 3/8" BSP Male x 1/2" BSP Male Adaptor - Approved Hydraulics Limited
    Regular price £7.55
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    5/8" BSP Male x 3/4" BSP Male Adaptor

    Key Features

    • Type: straight adaptor (male to female)
    • Threads: 5/8 to 3/4 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 £7.55
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 5/8" BSP Male x 1" BSP Male Adaptor
    Regular price £13.40
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    • Delivery to UK & Ireland

    5/8" BSP Male x 1" BSP Male Adaptor

    Key Features

    • Type: straight adaptor (male to female)
    • Threads: 5/8 to 1 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 £13.40
    • 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 £8.32
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    • Delivery to UK & Ireland

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

    Key Features

    • Type: swivel adaptor (male to female)
    • Threads: 1/2 to 1/4 BSP
    • Swivel: captive nut allows hose connection without twisting
    • Seal: cone/washer seal depending on variant
    • Use: connect hoses where rotation during assembly is restricted
    Regular price £8.32
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/2 BSP  TEE F/F/M Branch
    Regular price £13.84
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    1/2 BSP TEE F/F/M Branch

    Key Features

    • Type: BSP tee adaptor with F/F/M branch configuration
    • Thread size: 1/2 BSP to ISO 228 (parallel for female ports)
    • Male thread: BSP parallel or taper per specific SKU and sealing method
    • Material: carbon steel with protective plating for hydraulic service
    • Rating: typical working pressure up to 315–420 bar depending on size
    • Use: splitting or combining hydraulic lines in compact layouts
    Regular price £13.84
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ABER ISO (4 BOLTS) PTO TO OUTPUT SHAFT SAE 1400 ADAPTOR, WITH TWO BEARINGS
    Regular price £166.55
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    ABER ISO (4 BOLTS) PTO TO OUTPUT SHAFT SAE 1400 ADAPTOR, WITH TWO BEARINGS

    Key Features

    • Input: ISO 4-bolt PTO interface
    • Output: SAE 1400 flange
    • Support: two bearings for overhung load
    • Purpose: convert close-coupled PTO to prop-shaft drive
    • Benefit: reduces side-load on PTO and pump
    • Use: remote accessory drive via cardan shaft
    Regular price £166.55
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    ABER 1" Tipping Valve; Open Circuit 200L; Relief Valve with 2 Pressure Ranges; W / Pneumatic Selector
    Regular price £333.02
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    • Delivery to UK & Ireland

    ABER 1" Tipping Valve; Open Circuit 200L; Relief Valve with 2 Pressure Ranges; W / Pneumatic Selector

    Key Features

    • Valve type: tipping valve (open circuit)
    • Port size: 1" BSP
    • Max flow: 200 l/min
    • Relief valve: two pressure ranges
    • Control: pneumatic selector
    • Application: single-acting tipping gear
    • Ports: pressure; cylinder; tank with pilot port
    • Descent: progressive descent
    Regular price £333.02
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  • ADMISSION CONNECTOR 3/4" PIPE 1"1/2 ELBOW 45º
    Regular price £30.80
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    ADMISSION CONNECTOR 3/4" PIPE 1"1/2 ELBOW 45º

    Key Features

    • Component: pump admission connector
    • Connections: 3/4" pipe to 1 1/2" elbow
    • Elbow angle: 45°
    • Intended use: pump inlet/suction side
    • Design: smooth radius to minimise cavitation risk
    • Compatibility: ABER pump suction fittings
    Regular price £30.80
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  • ADMISSION CONNECTOR 3/4'''HOSE 1''''1/4 CURVE 45
    Regular price £32.38
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    ADMISSION CONNECTOR 3/4'''HOSE 1''''1/4 CURVE 45

    Key Features

    • Component: pump admission connector
    • Connections: 3/4" hose to 1 1/4" curved elbow
    • Elbow angle: 45°
    • Intended use: pump inlet/suction side
    • Design: smooth radius to minimise cavitation risk
    • Compatibility: ABER pump suction fittings
    Regular price £32.38
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1" PIPE 1"1/4 ELBOW 45º
    Regular price £28.76
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    • Delivery to UK & Ireland

    ADMISSION CONNECTOR 1" PIPE 1"1/4 ELBOW 45º

    Key Features

    • Component: pump admission connector
    • Connections: 1" pipe to 1 1/4" elbow
    • Elbow angle: 45°
    • Intended use: pump inlet/suction side
    • Design: angled elbow aids routing and reduces inlet losses
    • Compatibility: ABER pump suction fittings
    Regular price £28.76
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1 1/2" PIPE 1 1/2" ELBOW 45º
    Regular price £47.68
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    • Delivery to UK & Ireland

    ADMISSION CONNECTOR 1 1/2" PIPE 1 1/2" ELBOW 45º

    Key Features

    • Component: pump admission connector
    • Connections: 1 1/2" pipe to 1 1/2" elbow
    • Elbow angle: 45°
    • Intended use: pump inlet/suction side
    • Design: angled elbow aids routing and reduces inlet losses
    • Compatibility: ABER pump suction fittings
    Regular price £47.68
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1''1/4 PIPE 1''3/4 ELBOW 90º - Approved Hydraulics Limited
    Regular price £40.85
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    • Delivery to UK & Ireland

    ADMISSION CONNECTOR 1''1/4 PIPE 1''3/4 ELBOW 90º

    Key Features

    • Component: pump admission connector
    • Connections: 1 1/4" pipe to 1 3/4" elbow
    • Elbow angle: 90°
    • Intended use: pump inlet/suction side
    • Design: compact elbow for tight installations
    • Compatibility: ABER pump suction fittings
    Regular price £40.85
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1" PIPE THREAD TO  2" STRAIGHT HOSE TAIL
    Regular price £23.17
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    ADMISSION CONNECTOR 1" PIPE THREAD TO 2" STRAIGHT HOSE TAIL

    Key Features

    • Component: pump admission connector
    • Connections: 1" pipe thread to 2" straight hose tail
    • Form: straight
    • Intended use: pump inlet/suction side
    • Design: straight-through for minimal restriction
    • Compatibility: ABER pump suction fittings
    Regular price £23.17
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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.