• Hydra Part CETOP 5 Modular Double Pilot Operated Check Valve on A & B (Z2DS-10) - Approved Hydraulics
    Regular price £86.32
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    CETOP 5 Modular Double Pilot Operated Check Valve on A & B (Z2DS-10)

    Key Features

    • Interface: iso 4401-05 cetop 5 ng10
    • Type: double pilot operated check valve
    • Ports: checks on a and b
    • Max operating pressure: 315 bar
    • Nominal flow: 80 l/min
    • Use: load holding on cylinders ; pilot release for motion
    Regular price £86.32
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  • Hydra Part CETOP 5 Modular Flow Control Valve on A&B (Z2FDS-10-30-S) - Approved Hydraulics
    Regular price £77.32
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    CETOP 5 Modular Flow Control Valve on A&B (Z2FDS-10-30-S)

    Key Features

    • Interface: iso 4401-05 cetop 5 ng10
    • Function: double throttle ; check meter-in or meter-out on a ; b
    • Max operating pressure: 315 bar
    • Max flow: 160 lpm
    • Temperature: -30 c to +80 c
    Regular price £77.32
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  • Hydra Part CETOP 5 Pilot Operated Relief Valve Module - A&B to T (Z-2-PB-10-VC-1-315) - Approved Hydraulics
    Regular price £131.62
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    CETOP 5 Pilot Operated Relief Valve Module - A&B to T (Z-2-PB-10-VC-1-315)

    Key Features

    • Interface: iso 4401-05 cetop 5 ng10
    • Function: pilot operated relief a and b to t
    • Max operating pressure: 315 bar
    • Max flow: 100 l/min
    • Temp range: -20 c to +70 c
    • Weight: 3.1 kg
    • Channels: a ; b ; a+b vc option
    Regular price £131.62
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  • Hydra Part CETOP 5 Pressure Reducing Module - A to T (ZPR-10-D-A-1-210-YM) - Approved Hydraulics
    Regular price £153.94
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    CETOP 5 Pressure Reducing Module - A to T (ZPR-10-D-A-1-210-YM)

    Key Features

    • Interface: iso 4401-05 cetop 5 ng10
    • Function: pressure reducing module a to t
    • Max operating pressure: 315 bar
    • Secondary pressure: 210 bar
    • Max flow: 60 lpm
    • Temperature: -20 c to +80 c
    Regular price £153.94
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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.

  • Hydra Part CETOP 5 Pressure Reducing Module - P to T (ZPR-10-D-P-1-210-YM) - Approved Hydraulics
    Regular price £153.94
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    CETOP 5 Pressure Reducing Module - P to T (ZPR-10-D-P-1-210-YM)

    Key Features

    • Interface: iso 4401-05 cetop 5 ng10
    • Function: pressure reducing module p to t
    • Max operating pressure: 315 bar
    • Secondary pressure: 210 bar
    • Max flow: 60 lpm
    • Temperature: -20 c to +80 c
    Regular price £153.94
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    • Order by 3pm for Next Day Delivery
  • Out of Stock
    Hydra Part CETOP 5 Pressure Reducing Module Valve - B to T (ZPR-10-D-B-1-210-YM) - Approved Hydraulics
    Regular price £121.68
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    CETOP 5 Pressure Reducing Module Valve - B to T (ZPR-10-D-B-1-210-YM)

    Key Features

    • Interface: iso 4401-05 cetop 5 ng10
    • Function: pressure reducing module b to t
    • Max operating pressure: 315 bar
    • Secondary pressure: 210 bar
    • Max flow: 60 lpm
    • Temperature: -20 c to +80 c
    Regular price £121.68
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Hydra Part CETOP 5 Pressure Relief Valve Module - P to T (ZPB-10-VP-1-315) - Approved Hydraulics
    Regular price £102.11
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    CETOP 5 Pressure Relief Valve Module - P to T (ZPB-10-VP-1-315)

    Key Features

    • Interface: iso 4401-05 cetop 5 ng10
    • Function: pilot operated pressure relief p to t
    • Max operating pressure: 315 bar
    • Max flow: 100 l/min
    • Temp range: -20 c to +70 c
    • Weight: 2.6 kg
    • Typical use: system relief on cetop 5 stacks
    Regular price £102.11
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  • Hydra Part CETOP 5 Single Solenoid Control Valve NG06 - P to A & B to T (X - 11) - Approved Hydraulics
    Regular price From £93.38
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    CETOP 5 Single Solenoid Control Valve NG10 - P to A & B to T (X - 11)

    Key Features

    • Interface: iso 4401-05 cetop 5 ng10
    • Spool function: p to a ; b to t d spool
    • Nominal flow: 120 l/min
    • Max pressure: p ; a ; b 315 bar ; t 16 bar
    • Coils: 12 vdc ; 24 vdc ; 110 vac 50hz ; 220 vac 50hz
    • Ingress protection: ip65
    • Switch time: 50 to 70 ms
    • Connector: din plug with led
    • Manual override: standard on all valves
    Regular price From £93.38
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  • Hydra Part CETOP 5 single solenoid control valve NG10 All ports connected to X - Approved Hydraulics
    Regular price From £90.05
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    CETOP 5 single solenoid control valve NG10 All ports connected to X

    Key Features

    • Centre spool: all ports connected to x
    • Solenoid: single solenoid
    • 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 £90.05
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    • Order by 3pm for Next Day Delivery
  • Chains for TE120p Rev forestal
    Regular price £4.56
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    Chains for TE120p Rev forestal

    Key Features

    • Part number: 302010-CHAIN
    • Equipment compatibility: TE120p Rev forestal
    • Component type: Replacement chain set for forestry attachment
    • Function: Power transmission or guarding chain in moving mechanism
    • Duty: Designed for heavy duty; high shock forestry environments
    • Typical use: Forestry attachment servicing and wear part replacement
    Regular price £4.56
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  • Check valve Cartridge - Approved Hydraulics Limited
    Regular price £7.92
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    Check valve Cartridge

    Key Features

    • Type: screw in cartridge check valve
    • Cavity: sae 08 ; 3/4-16 unf
    • Function: permits flow 1 -> 2 ; blocks reverse
    • Cracking pressure: 0.3 bar class
    • Use: backflow prevention ; load holding in mini power packs
    Regular price £7.92
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  • Hydra Part Clay Spade for 13T - 15T Machines - Approved Hydraulics

    POA

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    Clay Spade for 13T - 15T Machines

    Key Features

    • Purpose: narrow trenching in clay and cohesive soils on 13T - 15T machines
    • Blade: long spade profile for easy side-wall penetration
    • Edge: continuous cutting edge; tooth options by request
    • Shell: high strength plate with reinforced hanger
    • Applications: cable trenches; utilities; trial pits
    • Mounting: pin-on or quick hitch headstocks

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
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  • Hydra Part Clay Spade for 1T - 1.9T Machines - Approved Hydraulics

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    Clay Spade for 1T - 1.9T Machines

    Key Features

    • Purpose: narrow trenching in clay and cohesive soils on 1T - 1.9T machines
    • Blade: long spade profile for easy side-wall penetration
    • Edge: continuous cutting edge; tooth options by request
    • Shell: high strength plate with reinforced hanger
    • Applications: cable trenches; utilities; trial pits
    • Mounting: pin-on or quick hitch headstocks

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
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  • Hydra Part Clay Spade for 20T - 22T Machines - Approved Hydraulics

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    Clay Spade for 20T - 22T Machines

    Key Features

    • Purpose: narrow trenching in clay and cohesive soils on 20T - 22T machines
    • Blade: long spade profile for easy side-wall penetration
    • Edge: continuous cutting edge; tooth options by request
    • Shell: high strength plate with reinforced hanger
    • Applications: cable trenches; utilities; trial pits
    • Mounting: pin-on or quick hitch headstocks

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydra Part Clay Spade for 2T - 2.9T Machines - Approved Hydraulics

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    Clay Spade for 2T - 2.9T Machines

    Key Features

    • Purpose: narrow trenching in clay and cohesive soils on 2T - 2.9T machines
    • Blade: long spade profile for easy side-wall penetration
    • Edge: continuous cutting edge; tooth options by request
    • Shell: high strength plate with reinforced hanger
    • Applications: cable trenches; utilities; trial pits
    • Mounting: pin-on or quick hitch headstocks

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydra Part Clay Spade for 3T - 3.9T Machines - Approved Hydraulics

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    Clay Spade for 3T - 3.9T Machines

    Key Features

    • Purpose: narrow trenching in clay and cohesive soils on 3T - 3.9T machines
    • Blade: long spade profile for easy side-wall penetration
    • Edge: continuous cutting edge; tooth options by request
    • Shell: high strength plate with reinforced hanger
    • Applications: cable trenches; utilities; trial pits
    • Mounting: pin-on or quick hitch headstocks

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydra Part Clay Spade for 4T - 6T Machines - Approved Hydraulics

    POA

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    Clay Spade for 4T - 6T Machines

    Key Features

    • Purpose: narrow trenching in clay and cohesive soils on 4T - 6T machines
    • Blade: long spade profile for easy side-wall penetration
    • Edge: continuous cutting edge; tooth options by request
    • Shell: high strength plate with reinforced hanger
    • Applications: cable trenches; utilities; trial pits
    • Mounting: pin-on or quick hitch headstocks

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydra Part Clay Spade for 7T - 9T Machines - Approved Hydraulics

    POA

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    Clay Spade for 7T - 9T Machines

    Key Features

    • Purpose: narrow trenching in clay and cohesive soils on 7T - 9T machines
    • Blade: long spade profile for easy side-wall penetration
    • Edge: continuous cutting edge; tooth options by request
    • Shell: high strength plate with reinforced hanger
    • Applications: cable trenches; utilities; trial pits
    • Mounting: pin-on or quick hitch headstocks

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Clockwise Group 2 Tandem Hydraulic Pumps - Front - Approved Hydraulics Limited
    Regular price £159.78
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    Clockwise Group 2 Tandem Hydraulic Pumps - Front

    Key Features

    • Type: group 2 tandem external gear pump
    • Displacement: 4.5 to 25 cc per rev per section
    • Rotation: clockwise
    • Mounting: 2 or 4 bolt flange per variant
    • Use: supply multiple circuits from one drive
    Regular price £159.78
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    • Order by 3pm for Next Day Delivery
  • Clockwise Group 2 Tandem Hydraulic Pumps - Rear

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    Clockwise Group 2 Tandem Hydraulic Pumps - Rear

    Key Features

    • Type: group 2 tandem external gear pump
    • Displacement: 4.5 to 25 cc per rev per section
    • Rotation: clockwise
    • Mounting: 2 or 4 bolt flange per variant
    • Use: supply multiple circuits from one drive

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
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  • Tandem Hydraulic Pump Assembly 4.5cc - 25cc- Clockwise - Approved Hydraulics Limited
    Regular price £372.30
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    Clockwise Group 2 Tandem Pump 14cc Front + 14cc Rear 1:8 taper shaft with Flange Ports

    Key Features

    • Sections: tandem two stage ; 14 cc front ; 14 cc rear
    • Rotation: clockwise
    • Ports: typical suction 3/4" BSP ; pressure 1/2" BSP per stage
    • Shaft: 1.8 taper ; 4 bolt EU flange
    • Working pressures: P1 up to 200 bar ; P2 up to 160 bar
    • Speed: up to ~3500 rpm
    • Use: dual circuit mobile hydraulics ; steering ; implements
    Regular price £372.30
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  • CMB BBC Clamshell Buckets - Approved Hydraulics Limited

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    CMB BBC Clamshell Buckets

    Key Features

    • Clamping performance: High clamping force
    • Structural build: Robust and reliable frame
    • Compact cylinder layout: Horizontal cylinder to reduce overall height
    • Hydraulic protection: Fully protected hydraulic components
    • Rotation options: 360° Indexator rotator or GR rotator
    • Sealing option: Viton seals (optional)
    • Wear components: Hardened pins and bushings (with spiroil)
    • Material upgrade: Hardox parts available on request
    • Model range / machine size: 12 models for excavators from 6–12 t up to 26–34
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • CMB CCE Series Crusher

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    CMB CCE Series Crusher

    Key Features

    • Frame: Robust Hardox 450 / Strenx 700 structure
    • Speed Valve: Faster open/close cycle (from CC20E upwards)
    • Crushing power: High clamping force on the tip/teeth
    • Rotation: 360° continuous hydraulic rotation
    • Cylinder protection: Fully protected, reversed-mounted cylinders
    • Pins & bushings: Hardened pins and bushings for durability
    • Wear parts: Reversible blades + interchangeable teeth to reduce downtime

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • CMB FK Series Rotating Multi-Processor - Approved Hydraulics Limited

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    CMB FK Series Rotating Multi-Processor

    Key Features

    • Modular jaw kits: Swap jaw sets for different tasks.
    • Quick kit change: Faster changeovers, less downtime.
    • 360° hydraulic rotation: Precise positioning without moving the excavator.
    • Hardox 450 body: High wear resistance.
    • Protected inverted cylinder: Better shielding from debris.
    • 4-way reversible blades: Rotate edges to extend life.
    • Replaceable wear parts: Teeth/wear components change easily.
    • Use: demolition; recycling; site clearance

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice

All for Professional Hydraulic Applications

Discover quality all 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. Whether you are replacing existing parts or specifying components for a new build, our experienced team can help you find the right product. 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.