• Hydra Part High Pressure Carry Over for Z50/Z80 Valve - Approved Hydraulics
    Regular price £11.09
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    High Pressure Carry Over for Z50/Z80 Valve

    Key Features

    • Accessory: high pressure carry over ; power beyond sleeve
    • Compatibility: z50 ; z80 monoblock valves
    • Use: enables downstream circuits ; converts open centre to power beyond
    • Installation: fits in end section kit ; see valve data sheet
    • Working pressure: as per base valve rating ; up to 250 bar typical
    • Notes: requires appropriate return to tank path for excess flow
    Regular price £11.09
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Din Connector plug 3 Pole + Earth - IP65 - Max 240 VAC - 10A - Approved Hydraulics Limited
    Regular price £3.19
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    Din Connector plug 3 Pole + Earth - IP65 - Max 240 VAC - 10A

    Key Features

    • Standard: DIN 43650 Form A ; ISO 4400
    • Contacts: 3 pole + earth PE
    • Rating: 250 VAC ; 10 A max
    • Ingress protection: IP65 with gasket ; strain relief
    • Use: fits solenoid coils with 18 mm pin spacing ; DIN Form A
    Regular price £3.19
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 12vDC Coil For Z50 valve 16.3mm Hole x 50mm Long - Approved Hydraulics Limited
    Regular price £24.72
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    • Delivery to UK & Ireland

    12vDC Coil For Z50 valve 16.3mm Hole x 50mm Long

    Key Features

    • Voltage: 12 vdc
    • Bore: 16.3 mm through-hole
    • Body length: 50 mm
    • Duty: 100% ed continuous
    • Connection: din plug style
    • Use: z50 solenoid valves
    Regular price £24.72
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 12VDC Coil For Z80 Valve 22mm Hole x 54mm Long - Approved Hydraulics Limited
    Regular price £34.88
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    12VDC Coil For Z80 Valve 22mm Hole x 54mm Long

    Key Features

    • Voltage: 12 vdc
    • Bore: 22 mm
    • Length: 54 mm
    • Use: z80 sectional valve coils
    • Connector: din plug
    Regular price £34.88
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 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.

  • Standard DIN Hirschmann Connector Plug - Black - Approved Hydraulics Limited
    Regular price £4.34
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    Standard DIN Hirschmann Connector Plug - Black

    Key Features

    • Standard: EN 175301-803 DIN 43650
    • Pins: 3 pin; 2 pole and earth
    • Cable gland range: 4 mm to 9 mm cable diameter
    • Ingress protection: IP67 when correctly assembled
    • Current rating: 16 A max
    • Voltage rating: AC up to 250 V; DC up to 300 V
    • Typical use: Solenoid valve coils and industrial sensors
    Regular price £4.34
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 24VDC Coil For Z80 Valve 22mm Hole x 54mm Long - Approved Hydraulics Limited
    Regular price £34.88
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    • Delivery to UK & Ireland

    24VDC Coil For Z80 Valve 22mm Hole x 54mm Long

    Key Features

    • Voltage: 24 vdc
    • Bore: 22 mm
    • Length: 54 mm
    • Use: z80 sectional valve coils
    • Connector: din plug
    Regular price £34.88
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 24VDC Coil For Z50 valve 16.3mm Hole x 50mm Long
    Regular price £24.68
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    • Delivery to UK & Ireland

    24VDC Coil For Z50 valve 16.3mm Hole x 50mm Long

    Key Features

    • Voltage: 24 vdc
    • Bore: 16.3 mm
    • Length: 50 mm
    • Use: z50 sectional valve coil
    • Connector: din plug
    Regular price £24.68
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 2 POLE PLUG to DIN 72585-2 for 00720000/100/200 - Approved Hydraulics Limited
    Regular price £19.80
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    • Delivery to UK & Ireland

    2 POLE PLUG to DIN 72585-2 for 00720000/100/200

    Key Features

    • Connector type: 2‑pole plug
    • Standard: DIN 72585‑2 (high‑duty automotive connector)
    • ABER code: CCSEN08
    • Use: mates to ABER sensor 00720000/100/200 wiring
    • Feature: fluid‑resistant, suitable for transmission environments
    Regular price £19.80
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Z80 Single Acting Spool - Approved Hydraulics Limited

    POA

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    • Delivery to UK & Ireland

    Z80 Single Acting Spool

    Key Features

    • Type: z80 single acting spool for sectional valve
    • Function: selects porting for motor or single acting cylinder
    • Use: configure z series valve bank per function
    • Material: hardened spool with precision grinding
    • Service: replace or build specific sections

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Z80 Motor Spool - Approved Hydraulics Limited

    POA

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    • Delivery to UK & Ireland

    Z80 Motor Spool

    Key Features

    • Type: z80 motor spool for sectional valve
    • Function: selects porting for motor or single acting cylinder
    • Use: configure z series valve bank per function
    • Material: hardened spool with precision grinding
    • Service: replace or build specific sections

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Out of Stock
    Z50 Single Acting Spool - Approved Hydraulics Limited

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Z50 Single Acting Spool

    Key Features

    • Type: z50 single acting spool for sectional valve
    • Function: selects porting for motor or single acting cylinder
    • Use: configure z series valve bank per function
    • Material: hardened spool with precision grinding
    • Service: replace or build specific sections

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Z50 Motor Spool - Approved Hydraulics Limited

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Z50 Motor Spool

    Key Features

    • Type: z50 motor spool for sectional valve
    • Function: selects porting for motor or single acting cylinder
    • Use: configure z series valve bank per function
    • Material: hardened spool with precision grinding
    • Service: replace or build specific sections

    POA

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

Solenoid Monoblock Valve Spares for Professional Hydraulic Applications

Discover quality solenoid monoblock valve spares 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.