Your cart is empty
Login / Register in for faster checkout.
Already have an account? Log in
Cart
Shop by product
Hydraulic Rotators & Links
Worm Drives Units & Rotary Manifolds
Excavator & Crane Attachments
Forestry Attachments
Rail Attachments
Demolition Attachments
Subsea Attachments
Tractor Attachments
Wireless Weigh Scales
Timber Processing
Mining & Quarry
Directional Control Valves
Line Mounted Valves
Hydraulic Cylinders
Hydraulic Pumps
Hydraulic Motors
Power Packs
PTO Equipment
Remote Controls
Worm Drives & Rotary Manifolds
Oils & Lubricants
Hydraulic Oil Tanks
Stabiliser Pads & Storage Cages
All Other Equipment
3/4 BSPP Relief Valve - 80 l/min - 50/350 bar - Steel Body
Key Features
3/4" 3 port manual diverter valve (open centre)
3/4" 3 Port Pressure Compensating Flow Control with bypass to line
3/4" BSP Female Swivel Blanking Cap
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.
3/4" BSP Female Swivel x 3/4" BSP Female Swivel
3/4" BSP IN-LINE 80 lpm RELIEF VALVE - 100-350 bar
3/4" BSP Male Cone Seal x 1" BSP Female Swivel Copact Adaptor
3/4" BSP Male for Bonded Seal x 3/4" BSP Female Swivel 90° Compact Elbow
3/4" BSP Male x 1" BSP Male Adaptor
3/4" BSP Male x 1"BSP Swivel Female
3/4" BSP Male x 1/2" BSP Female Swivel Adaptor
3/4" BSP Male x 3/4"BSP Swivel Female x 3/4" BSP Male Branch Tee Adaptor
3/4" BSP Return Filter Housing
3/4" BSP Unloader Valve Block (N/O - ELP) Without Coil (See Coils 20032268 12V or ..69 for 24V)
3/4" BSP x 3/4" BSP Bulkhead Adaptor with Locknut
3/4" BSP X 3/4" BSPT Tapered Adaptor
3/4" BSPP Bi-directional Flow Control Valve
3/4" BSPT Male Tapered x 3/4" BSPT Male Tapered Adaptor
3/4" Hydraulic Two Pump High Low Unloading Valve
3/4" Port, 90°, 3 Hole, 40mm PCD, Female Gear Pump Adaptors
3/4" Port, 90°, 4 Hole, 40mm PCD, Female Gear Pump Adaptors
3/4" Port, Straight, 51mm PCD, Female Gear Pump Adaptors
3/4" UNF Male SORB - 1/2" BSP Male Adaptor
3/4"BSP Dual Cross-over 80Lpm Relief Valve - 130-350Bar
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.
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.
