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90LS & 90L Single Microswitch Kit (Req's switch N/O 30075320 or N/C 20010687 extra as needed - Not included)
Key Features
12V DC Coil-22W-13mm hole-39mm long for 45 - 50L - 80L-90L-100L-150L Unloader Valve
12V Elec/Air Solenoid coil for 8EP3 -4 kit 3W IP65 100% ED - Coil 9mm hole x 30mm long
24V DC Coil-22W-13mm hole-39mm long for 45 - 50L - 80L-90L-100L-150L Unloader Valve
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.
12V Elec/Air Solenoid Coil for 8EP3 -4 kit 3W IP65 100% ED - Coil 9mm hole x 30mm Long C/w with Flying Leads Connection
80L - 100L- 150L - 240L - RPHT fixed port relief 210 bar
80L - 100L-150L - 240L - RPHT fixed port relief 150 bar
80L Control Valve Inlet Section -S
80L Control Valve Intermediate Section With Relief Valve & Auxillery Inlet
80L lever box with stroke limiter
80L TIE ROD KIT (4 Rods / kit) 1 Bank M8x1.25 134mm long
80L TIE ROD KIT (4 Rods / kit) 10 Bank M8x1.25 508mm long
80L TIE ROD KIT (4 Rods / kit) 11 Bank M8x1.25 546 mm long
80L TIE ROD KIT (4 Rods / kit) 12 Bank M8x1.5 585 mm long
80L TIE ROD KIT (4 Rods / kit) 2 bank M8x1.25 175 mm long
80L TIE ROD KIT (4 Rods / kit) 3 Bank M8x1.25 216 mm long
80L TIE ROD KIT (4 Rods / kit) 4 Bank M8x1.25 257 mm long
80L TIE ROD KIT (4 Rods / kit) 5 Bank M8x1.25 298mm long
80L TIE ROD KIT (4 Rods / kit) 6 Bank M8x1.25 339mm long
80L TIE ROD KIT (4 Rods / kit) 7 Bank M8x1.25 380mm long
80L TIE ROD KIT (4 Rods / kit) 8 Bank M8x1.25 421mm long
80L TIE ROD KIT (4 Rods / kit) 9 Bank M8x1.25 469mm long
8P Pneumatic Kit 80L-90L-100L-120L-150L control valve Pneumatic Kit
Electro Pneumatic 3/2 valve (N/O) without coil 8EP4 for valve air cylinder manifold kit 30034555
Discover quality 1/2" 80lpm sectional 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.
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.
