• Out of Stock
    Hydra Part FLOW DIVIDER/COMBINER 0 In line 3/8" BSP in/out 13-23 lpm - Approved Hydraulics
    Regular price £142.45 Ex VAT £170.94 Inc VAT
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    FLOW DIVIDER/COMBINER 50/50 In line 3/8" BSP in/out 13-23 lpm

    Key Features

    • Function: 50 ; 50 flow divider ; combiner
    • Porting: 3/8" bsp
    • Flow range: 13-23 lpm
    • Accuracy: maintains equal flows within typical tolerance
    • Use: synchronise two actuators ; recombine return flow
    • Mounting: in line
    Regular price £142.45 Ex VAT £170.94 Inc VAT
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  • DIN 3/8 BSPP Double Acting Pilot Check Valve - Pipe12 - Approved Hydraulics Limited
    Regular price £20.23 Ex VAT £24.28 Inc VAT
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    DIN 3/8 BSPP Double Acting Pilot Check Valve - Pipe12

    Key Features

    • Type: straight adaptor (BSP threading per title)
    • Threads: 3/8 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 £20.23 Ex VAT £24.28 Inc VAT
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  • 1/2 BSPP Double Cross Relief Valve 50 L/Min 70/350 Bar - Steel Body - Approved Hydraulics Limited
    Regular price £62.26 Ex VAT £74.72 Inc VAT
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    1/2 BSPP Double Cross Relief Valve 50 L/Min 70/350 Bar - Steel Body

    Key Features

    • Type: BSP tee adaptor
    • Connections: BSP threading per title
    • Threads: 1/2 thread
    • Material: plated carbon steel for hydraulic service
    • Use: split or combine lines; add instruments or auxiliary circuits
    Regular price £62.26 Ex VAT £74.72 Inc VAT
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  • Hydra Part CETOP 3 Modular Flow Control Valve (Z2FDS-6-30-S2) - Approved Hydraulics
    Regular price £51.08 Ex VAT £61.30 Inc VAT
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    CETOP 3 Modular Flow Control Valve (Z2FDS-6-30-S2)

    Key Features

    • Interface: iso 4401-03 cetop 3 ng06
    • Type: double throttle ; check modular flow control
    • Nominal flow: 80 l/min
    • Operating pressure: up to 315 bar
    • Throttle style: s2 meter out
    • Function: metered flow one way ; free flow via checks opposite
    Regular price £51.08 Ex VAT £61.30 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.

  • 3/8" BSP Male x 1/2" BSP Male Adaptor - Approved Hydraulics Limited
    Regular price £1.96 Ex VAT £2.36 Inc VAT
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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 £1.96 Ex VAT £2.36 Inc VAT
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  • GASKET ZF (0,5MM) - 4 BOLT - Approved Hydraulics Limited
    Regular price £1.19 Ex VAT £1.43 Inc VAT
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    GASKET ZF (0,5MM) - 4 BOLT

    Key Features

    • Type: ZF PTO / pump interface gasket
    • Thickness: 0.5 mm
    • Pattern: 4-bolt mounting
    • Function: seals gearbox-to-PTO or PTO-to-pump interface
    • Service note: replace whenever PTO/pump is removed
    • Benefit: prevents oil leakage and maintains system integrity
    Regular price £1.19 Ex VAT £1.43 Inc VAT
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  • Scanreco Cigarette Plug Adaptor 12V/24V - Approved Hydraulics Limited
    Regular price £40.90 Ex VAT £49.09 Inc VAT
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    Scanreco Cigarette Plug Adaptor 12V/24V

    Key Features

    • Type: 12 ; 24 vdc cigarette lighter adaptor
    • Interface: vehicle plug to dc output lead
    • Use: power scanreco chargers or receiver accessories
    • Note: in vehicle accessory power connection
    • Protection: fused lead per adaptor design
    Regular price £40.90 Ex VAT £49.09 Inc VAT
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  • CETOP 3 Steel Manifold with Relief Cavity - P&T 1/2" - A&B 3/8" - Approved Hydraulics Limited
    Regular price From £37.60 Ex VAT From £45.13 Inc VAT
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    CETOP 3 Steel Manifold with Relief Cavity - P&T 1/2" - A&B 3/8"

    Key Features

    • Standard: cetop 3 ; iso 4401-03 ; din 24340
    • Ports: p ; t 1/2" bspp ; a ; b 3/8" 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 ng6 directional valves on mini power packs ; manifolds
    Regular price From £37.60 Ex VAT From £45.13 Inc VAT
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  • 12V DC Coil-22W-13mm hole-39mm long for  45 - 50L - 80L-90L-100L-150L Unloader Valve - Approved Hydraulics Limited
    Regular price £24.48 Ex VAT £29.38 Inc VAT
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    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 Ex VAT £29.38 Inc VAT
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  • Out of Stock
    PTO Gear Pump Flange Adaptors
    Regular price From £64.74 Ex VAT From £77.69 Inc VAT
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    PTO Gear Pump Flange Adaptors

    Key Features

    • Function: Adaptor between PTO gearboxes and external gear pumps
    • Flange patterns: EU 4 bolt ; SAE A/B and brand specific options
    • Shaft interfaces: 1/8 taper ; 1/5 taper ; parallel ; splined options
    • Pump groups: Group 2 ; Group 3 compatibility
    • Use: Mount pump securely to PTO for mobile hydraulic kits
    Regular price From £64.74 Ex VAT From £77.69 Inc VAT
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  • Hydra Part Top Link Double Pilot Check Valve 1/2"BSP  50Lpm - Approved Hydraulics
    Regular price £74.66 Ex VAT £89.60 Inc VAT
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    Top Link Double Pilot Check Valve 3/4"BSP

    Key Features

    • Type: double pilot operated check valve
    • Threads: 3/4" BSP
    • Function: locks load until pilot pressure releases checks
    • Use: load holding on cylinders and top links
    • Pressure: 315 to 350 bar class
    Regular price £74.66 Ex VAT £89.60 Inc VAT
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  • Out of Stock
    4 Port Manual Diverter Valve - 1/2" Open Centre
    Regular price £55.81 Ex VAT £66.98 Inc VAT
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    4 Port Manual Diverter Valve - 1/2" Open Centre

    Key Features

    • Type: 4 port 2 position manual diverter spool
    • Ports: 1/2" bsp
    • Centre: open centre
    • Use: select between two actuator circuits
    • Body: steel with plated handle
    Regular price £55.81 Ex VAT £66.98 Inc VAT
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  • Out of Stock
    High Pressure 3 Port Manual Diverter Valve - Steel 3/4" 500Bar - Approved Hydraulics Limited
    Regular price £90.55 Ex VAT £108.67 Inc VAT
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    High Pressure 3 Port Manual Diverter Valve - Steel 3/4" 500Bar

    Key Features

    • Type: 3 port manual lever diverter ; open centre
    • Pressure rating: up to 500 bar
    • Port size: 3/4"
    • Function: diverts inlet to a or b ; closed centre when specified
    • Use: circuit selection on high pressure lines
    Regular price £90.55 Ex VAT £108.67 Inc VAT
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  • Hydra Part CETOP 3 All Ports Blocked with Manual Lever - Approved Hydraulics
    Regular price From £111.83 Ex VAT From £134.20 Inc VAT
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    CETOP 3 All Ports Blocked with Manual Lever

    Key Features

    • Interface: cetop 3 ; ng06 ; iso 4401-03
    • Actuation: manual lever
    • Spool function: ng06 ; all ports blocked
    • Mounting: sandwich between manifold and subplate
    • Use: manual override ; test ; emergency operation
    Regular price From £111.83 Ex VAT From £134.20 Inc VAT
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  • Out of Stock
    Hydra Part 3/8" 3 Port Pressure Compensating Flow Control with bypass to line - Approved Hydraulics
    Regular price £134.34 Ex VAT £161.21 Inc VAT
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    3/8" 3 Port Pressure Compensating Flow Control with bypass to line

    Key Features

    • Port size: 3/8\" bsp
    • Type: 3 port priority flow control
    • Compensation: pressure compensated priority flow
    • Bypass: excess flow bypass to line
    • Use: maintains set actuator flow under load changes
    Regular price £134.34 Ex VAT £161.21 Inc VAT
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  • Hydraulic Motors (MV Series) - Approved Hydraulics Limited
    Regular price From £336.23 Ex VAT From £403.48 Inc VAT
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    Hydraulic Motors (MV Series)

    Key Features

    • Series: mv high torque
    • Design: gerotor ; geroler low speed high torque motor
    • Mounting: industry standard flanges ; shaft options
    • Use: conveyors ; winches ; agricultural ; forestry ; cranes
    • Ports: side ports ; case drain where required
    • Features: tapered roller bearings for high radial ; axial loads
    • Displacements: 315 cc to 800 cc
    Regular price From £336.23 Ex VAT From £403.48 Inc VAT
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  • Hydra Part 1" 3 port manual diverter valve (open centre) - Approved Hydraulics
    Regular price £106.85 Ex VAT £128.23 Inc VAT
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    1" 3 port manual diverter valve (open centre)

    Key Features

    • Port size: 1\" bsp
    • Configuration: 3 way ; 2 position open centre
    • Function: manual rotary diverter for circuit selection
    • Mounting: in line installation
    • Typical applications: circuit selection for attachments ; auxiliary functions
    Regular price £106.85 Ex VAT £128.23 Inc VAT
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  • Hydra Part 63mm Glycerine Hydraulic Pressure Gauge 0-2300 Psi (160 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 0-2300 Psi (160 Bar) 1/4" Bottom Entry

    Key Features

    • Dial: 63 mm
    • Filling: glycerine filled
    • Entry: 1/4\" bsp bottom entry
    • Scale: psi ; bar dual scale
    • Casing: stainless steel
    • Pressure range: 0-2300 psi ( 160 bar )
    • Intended use: visual pressure readout on hydraulic circuits
    Regular price £16.14 Ex VAT £19.37 Inc VAT
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  • 3/8 BSPP CETOP 3 Single Manifold - 50 L/Min - 70/350 Bar - Aluminium Body - Approved Hydraulics Limited
    Regular price £39.43 Ex VAT £47.32 Inc VAT
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    3/8 BSPP CETOP 3 Single Manifold - 50 L/Min - 70/350 Bar - Aluminium Body

    Key Features

    • Type: single subplate manifold for CETOP 3 (NG6) valves
    • Ports: 3/8 BSPP
    • Max flow: 50 L/min
    • Pressure rating: 70–350 bar
    • Body: aluminium body
    • Use: mount a single directional valve with side ports
    Regular price £39.43 Ex VAT £47.32 Inc VAT
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  • BSPP Relief Valve upto 30 L/min - Steel Body - Approved Hydraulics Limited
    Regular price From £22.25 Ex VAT From £26.71 Inc VAT
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    BSPP Relief Valve upto 30 L/min - Steel Body

    Key Features

    • Type: hydraulic component
    • Design: built for mobile hydraulic service
    • Use: as specified by product title
    • Body: corrosion protected steel or aluminium per model
    Regular price From £22.25 Ex VAT From £26.71 Inc VAT
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  • 3/8" BSPP Double Acting Pilot Check Valve - Approved Hydraulics Limited
    Regular price £19.40 Ex VAT £23.29 Inc VAT
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    3/8" BSPP Double Acting Pilot Check Valve

    Key Features

    • Type: double acting pilot operated check valve
    • Ports: 3/8 BSPP
    • Function: locks actuator in both directions until pilot pressure opens
    • Benefit: load holding with controlled release
    • Use: cylinders that must hold position under load
    Regular price £19.40 Ex VAT £23.29 Inc VAT
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  • Hydra Part CETOP 3 Modular Pressure Relief Valve - P to T - (ZPB-6-VP-1-315) - Approved Hydraulics
    Regular price £71.93 Ex VAT £86.32 Inc VAT
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    CETOP 3 Modular Pressure Relief Valve - P to T - (ZPB-6-VP-1-315)

    Key Features

    • Interface: iso 4401-03 cetop 3 ng06
    • Function: pilot operated pressure relief p to t
    • Max operating pressure: 315 bar
    • Max flow: 60 l/min
    • Temp range: -20 c to +70 c
    • Weight: 1.3 kg
    • Typical use: system overpressure protection on cetop 3 stacks
    Regular price £71.93 Ex VAT £86.32 Inc VAT
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  • Hydra Part CETOP 5 Double Solenoid Control Valve NG10, All Ports Open - Approved Hydraulics
    Regular price From £89.14 Ex VAT From £106.97 Inc VAT
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    CETOP 5 Double Solenoid Control Valve NG10, All Ports Open

    Key Features

    • Centre spool: all ports open
    • 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 £89.14 Ex VAT From £106.97 Inc VAT
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  • 3/8 Bonded seal - Approved Hydraulics Limited
    Regular price £0.76 Ex VAT £0.92 Inc VAT
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    3/8 Bonded seal

    Key Features

    • Type: bonded sealing washer
    • Size: per selection
    • Construction: elastomeric sealing element bonded to metal washer
    • Use: high pressure face sealing on parallel threads/ports
    • Benefit: reliable leak-tight joint under vibration
    Regular price £0.76 Ex VAT £0.92 Inc VAT
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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.