• 1/2" BSP Male x 1/2" BSP Female Swivel Adaptor - Approved Hydraulics Limited
    Regular price £5.58
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    3/8 BSP Male x 3/8 BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor
    • Threads: 3/8 to 3/8 thread
    • Swivel: captive nut allows orientation during tightening
    • Seal: flat face or cone seat per variant
    • Use: connect hoses where rotation is restricted
    Regular price £5.58
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  • 1/2" BSP Male x 1/2" BSP Female Swivel Adaptor - Approved Hydraulics Limited
    Regular price £7.12
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    3/8" BSP Male x 1/2" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor female to female
    • Threads: 3/8 to 1/2 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 £7.12
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    • Order by 3pm for Next Day Delivery
  • 1/2" BSP Male x 1/2" BSP Female Swivel Adaptor - Approved Hydraulics Limited
    Regular price £7.21
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    1/2" BSP Male x 1/2" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor female to female
    • Threads: 1/2 to 1/2 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 £7.21
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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 £9.71
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    5/8" BSP Male x 1/2" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor female to female
    • Threads: 5/8 to 1/2 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
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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 £15.23
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    3/4" BSP x 3/4" BSP Bulkhead Adaptor with Locknut

    Key Features

    • Type: bulkhead adaptor with locknut for panel/tank pass-through
    • Threads: 3/4 to 3/4 BSP
    • Hardware: includes locknut for secure clamping
    • Material: plated carbon steel
    • Use: route hose/pipe through guards or reservoirs cleanly
    Regular price £15.23
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  • 1/2 BSP Female Swivel x 1/2 BSP Female Swivel Adaptor
    Regular price £7.31
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    1/2 BSP Female Swivel x 1/2 BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor (male to male)
    • Threads: 1/2 to 1/2 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 £7.31
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    • 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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    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
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  • Out of Stock
    1/4" BSP Male to 1/2 BSP Female Pressure Guage Adaptor - Approved Hydraulics Limited
    Regular price £5.28
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    3/8" BSP Male to 1/2" BSP Female Pressure Guage Adaptor

    Key Features

    • Type: pressure gauge adaptor
    • Threads: 3/8 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 £5.28
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  • 3/8" BSP Male x 1/2" BSP Male Adaptor - Approved Hydraulics Limited
    Regular price £6.78
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    5/8" BSP Male x 5/8" BSP Male Adaptor

    Key Features

    • Type: straight adaptor (male to female)
    • Threads: 5/8 to 5/8 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 £6.78
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  • 3/8" BSP Male x 1/2" BSP Male Adaptor - Approved Hydraulics Limited
    Regular price £2.36
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    3/8" BSP Male x 3/8" BSP Male Adaptor

    Key Features

    • Type: straight adaptor (male to female)
    • Threads: 3/8 to 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 £2.36
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    • Order by 3pm for Next Day Delivery
  • 3/4" BSP X 3/4" BSPT Tapered Adaptor
    Regular price £6.92
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    3/4" BSP X 3/4" 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: 3/4 to 3/4 BSP
    • Sealing: taper thread seals with thread sealant; parallel with washer/bonded seal
    • Use: connect tapered ports to parallel hose/valve fittings
    Regular price £6.92
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    • Order by 3pm for Next Day Delivery
  • 1/2" BSP Female Swivel x 5/8" BSP Female Swivel Adaptor
    Regular price £8.99
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    1/2" BSP Female Swivel x 5/8" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor (male to male)
    • Threads: 1/2 to 5/8 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 £8.99
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Bini Rotary Manifold DA Series (2-8 Channels) - Approved Hydraulics
    Regular price From £648.06
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    Rotary Manifold DA Series (2-8 Channels)

    Key Features

    • Type: hydraulic rotary manifold
    • Channels: 2–8 hydraulic passages
    • Rated pressure: up to 420 bar
    • Speed: 0–12 rpm recommended
    • Mounting: vertical axis; no axial or radial loads
    Regular price From £648.06
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  • Bini Electrical Swivel (CE Series) - Approved Hydraulics

    POA

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    Electrical Swivel (CE Series)

    Key Features

    • Type: electrical slip ring for power and signals
    • Cables: 0.75–4 mm2 cross section; 3 m pigtails each side
    • Options: gold plated contacts for CANBUS signals
    • Integration: can be combined with hydraulic manifold
    • Use: continuous electrical transfer on rotating joints

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Out of Stock
    ABER ISO (4 BOLTS) PTO TO OUTPUT SHAFT SAE 1300 ADAPTOR, WITH TWO BEARINGS
    Regular price £159.02
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    ABER ISO (4 BOLTS) PTO TO OUTPUT SHAFT SAE 1300 ADAPTOR, WITH TWO BEARINGS

    Key Features

    • Input: ISO 4-bolt / 8-spline PTO
    • Output flange: SAE 1300
    • Support: two bearings for overhung load
    • Purpose: convert close-coupled PTO to prop-shaft drive
    • Flange diameter: ~97 mm (SAE 1300 class)
    • Use: transmit torque to remote pump or accessory
    Regular price £159.02
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  • Out of Stock
    3 WAYS Manual Diverter Valve 3/4'', 120 l/min
    Regular price £106.21
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    3 WAYS Manual Diverter Valve 3/4'', 120 l/min

    Key Features

    • Type: 3-way manual diverter valve
    • Port size: 3/4'' BSP
    • Max flow: 120 l/min
    • Pressure class: up to 350 bar (family rating)
    • Ports: P to pressure; A/B to circuit outlets
    • Operation: lever-actuated; mechanical detents
    • Use: high-flow circuit selection for truck hydraulics
    Regular price £106.21
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  • Out of Stock
    FLANGE SAE 1300 DIN 5462
    Regular price £59.86
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    FLANGE SAE 1300 DIN 5462

    Key Features

    • Interface: SAE 1300 to DIN 5462
    • Spline specification: DIN 5462 A8x32x36
    • ABER reference: F1300
    • Type: cardan flange (spline bore)
    • Use: connect PTO/adaptor to prop shaft
    Regular price £59.86
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  • PTO ZF S6-36 C.P. (RATIO 1:1,32)
    Regular price £365.05
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    PTO ZF S6-36 C.P. (RATIO 1:1,32)

    Key Features

    • Product code: TF4014AMP
    • Gearbox compatibility: ZF S6-36; ZF 6S-850; ZF 6S-700
    • PTO internal ratio: 1 to 1.32
    • Control: Pneumatic shift; air connection
    • Continuous torque: 300 Nm
    • Intermittent torque: 420 Nm
    • Power at 1000 rpm: 32 kW
    • Mounting position: Rear mount
    • Pump rotation: Right hand
    • Weight: 7.5 kg; sensor option available
    Regular price £365.05
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  • Oil Filter Element - FRD09/16 - 235mm - 25 µm
    Regular price £23.63
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    Oil Filter Element - FRD09/16 - 235mm - 25 µm

    Key Features

    • Length: 235 mm
    • Filtration rating: 25 µm (return/air filter element)
    • Series: FRD09/16 replacement element
    • Function: removes contaminants to protect hydraulic circuits
    • Δp guidance: assembly pressure drop < 0.5 bar (typical FRD)
    • Application: hydraulic tank return/air filtration
    Regular price £23.63
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  • AIR/Breather Filter Element - FCD01 - 3 µm
    Regular price £13.78
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    AIR/Breather Filter Element - FCD01 - 3 µm

    Key Features

    • Type: air/breather filter element
    • Series: FCD01
    • Filtration rating: 3 µm
    • Function: filters intake air on hydraulic reservoir breather
    • Use: protects system from particulate ingress
    • Maintenance: replace during scheduled service or clogging
    Regular price £13.78
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  • Sensor - PNEUMATIC W/ 1/8" BSP - Approved Hydraulics Limited
    Regular price £31.74
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    Sensor - PNEUMATIC W/ 1/8" BSP

    Key Features

    • Type: pneumatic pressure sensor/switch
    • Process connection: 1/8" BSP
    • Signal: on/off indication
    • Use: PTO status or hydraulic pressure feedback
    • Mounting: threaded into pneumatic/hydraulic port
    • Compatibility: ABER PTOs/valves with 1/8" BSP ports
    Regular price £31.74
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  • GASKET - TF4026P - JUNTA ZF S5-42 (esp0,5mm) - Approved Hydraulics Limited
    Regular price £2.48
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    GASKET - TF4026P - JUNTA ZF S5-42 (esp0,5mm)

    Key Features

    • Gasket thickness: 0.5 mm
    • Compatibility: ABER TF4026P PTO for ZF S5‑42
    • ABER reference: CCJUN27
    • Function: seals PTO‑to‑gearbox mounting face
    • Maintenance: replace whenever PTO is refitted
    Regular price £2.48
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  • SENSOR FAE 41020 - NC (ISUZU,ZF S5-42,TOYOTA SUP.)
    Regular price £21.01
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    SENSOR FAE 41020 - NC (ISUZU,ZF S5-42,TOYOTA SUP.)

    Key Features

    • Type: Normally-Closed (NC) electrical sensor
    • Model: FAE 41020
    • Compatibility: ISUZU, ZF S5-42, Toyota (per listing)
    • Function: PTO status/actuation indication
    • Install: mounts to compatible ABER PTO housings
    • Leads: electrical connection suitable for vehicle harness
    Regular price £21.01
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  • Gasket - TF3010V - JUNTA ISUZU MZZ - Approved Hydraulics Limited
    Regular price £6.07
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    Gasket - TF3010V - JUNTA ISUZU MZZ

    Key Features

    • Compatibility: ABER TF3010V PTO (Isuzu MZZ-6F/6R/6S; MOZ-53)
    • Variant: TF3010V corresponds to vacuum-control version
    • Function: PTO-to-gearbox sealing gasket
    • Purpose: prevents oil leakage and maintains system pressure
    • Service note: replace on every PTO install or service
    • ABER reference: CCJUN23 (gasket code)
    Regular price £6.07
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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.