• 2 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable - Approved Hydraulics Limited
    Regular price £331.19
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    • Delivery to UK & Ireland

    2 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable

    Key Features

    • Buttons: 2 on/off
    • Supply: 12 ; 24 vdc
    • Cable: 2.4 m prewired
    • Use: remote control of basic hydraulic functions
    • Application: hydraulic component
    Regular price £331.19
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 4 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable
    Regular price £355.63
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    4 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable

    Key Features

    • Functions: 4 on ; off pushbuttons
    • Supply: 12 ; 24 VDC receiver
    • Harness: 2.4 m prewired receiver lead
    • Use case: simple on ; off control of one or two double acting functions
    • Form factor: handheld transmitter with compact receiver
    • Applications: tippers ; winches ; auxiliary hydraulic functions
    Regular price £355.63
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 6 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable
    Regular price £402.76
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    6 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable

    Key Features

    • Functions: 6 on ; off channels for multi function control
    • Supply: 12 ; 24 VDC receiver input
    • Harness: prewired 2.4 m cable simplifies installation
    • Use case: control of up to three double acting valve sections
    • Applications: service bodies ; cranes ; small plant
    • Operating concept: non proportional on ; off commands for clear operator feedback
    Regular price £402.76
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 8 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable
    Regular price £414.60
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    • Delivery to UK & Ireland

    8 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable

    Key Features

    • Functions: 8 on ; off pushbuttons
    • Supply: 12 ; 24 VDC receiver
    • Harness: 2.4 m prewired receiver connection
    • Use case: multiple discrete outputs for valve coils or contactor logic
    • Applications: hydraulic attachment control where simple binary commands are required
    • Note: choose e stop variant where a safety interlock is mandated
    Regular price £414.60
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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.

  • Out of Stock
    8 Button On/Off + E-stop Radio Remote System 12-24VDC prewired 2.4m Cable
    Regular price £790.46
    • All Items Guaranteed
    • Delivery to UK & Ireland

    8 Button On/Off + E-stop Radio Remote System 12-24VDC prewired 2.4m Cable

    Key Features

    • Functions: 8 on ; off pushbuttons with dedicated emergency stop
    • Supply: 12 ; 24 VDC receiver input
    • Harness: prewired receiver cable 2.4 m for quick install
    • Use case: discrete control of solenoid valves ; contactors or relays on mobile plant
    • Integration: suited to retrofit of simple hydraulic controls with radio link
    • Safety: e stop provides immediate stop signal to system interlock
    Regular price £790.46
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 12 Button On/Off + E-stop Radio Remote System 12-24VDC prewired 2.4m cable
    Regular price £1,358.09
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    • Delivery to UK & Ireland

    12 Button On/Off + E-stop Radio Remote System 12-24VDC prewired 2.4m cable

    Key Features

    • Functions: 12 on ; off pushbuttons plus dedicated emergency stop
    • Supply: 12 ; 24 VDC receiver input prewired with 2.4 m cable
    • Use case: retrofit on ; off control of hydraulic valves or contactor logic
    • Form factor: handheld transmitter with paired receiver for mobile machinery
    • Safety: E stop provides immediate shutdown signal to system interlock
    • Frequency: industrial license free bands with robust interference mitigation
    Regular price £1,358.09
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Mini Radio Remote Control 4 Button For 2 x Double  Actiong Valves Operation 12-24VDC
    Regular price £106.88
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    • Delivery to UK & Ireland

    Mini Radio Remote Control 4 Button For 2 x Double Actiong Valves Operation 12-24VDC

    Key Features

    • Control: 2 x double acting valves
    • Buttons: 4
    • Supply: 12 vdc ; 24 vdc
    • Interface: radio wireless control
    • Typical applications: multi function mobile hydraulics ; cranes ; tail lifts ; tippers
    Regular price £106.88
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Mini Radio Remote Control 2 Button For Double  Acting Operation 12-24VDC
    Regular price £103.55
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    • Delivery to UK & Ireland

    Mini Radio Remote Control 2 Button For Double Acting Operation 12-24VDC

    Key Features

    • Control: double acting operation
    • Buttons: 2
    • Supply: 12 vdc ; 24 vdc
    • Interface: radio wireless control
    • Use: remote actuation of mini power packs ; tipper ; liftgate ; winch circuits
    Regular price £103.55
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Mini Radio Remote Control 2 Button For Single Acting Operation 12-24VDC
    Regular price £103.55
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    • Delivery to UK & Ireland

    Mini Radio Remote Control 2 Button For Single Acting Operation 12-24VDC

    Key Features

    • Mode: single acting operation
    • Buttons: 2
    • Supply: 12 ; 24 vdc
    • Use: compact wireless control
    • Application: hydraulic component
    Regular price £103.55
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

Hydra Part Non-Proportional Radio Systems

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.