Lesson 1Pump types (gear, vane, piston): characteristics, efficiencies, and selection criteria for 5–25 l/min and up to 160 barThis part compares gear, vane, and piston pumps for small to middle flows. It covers saving power, noise, suck limits, and picking push and speed to give 5–25 l/min at up to 160 bar with good life.
External vs internal gear pump featuresVane pump efficiency and noise behaviorAxial piston pumps and control optionsSizing displacement for flow and speedNPSH, suction limits, and inlet conditionsLesson 2Seals, fittings, and connectors: selection for mineral oil, pressure ratings, and leak minimizationThis part looks at seals, fittings, and joins for mineral oil systems. It explains seal stuff, pressure levels, thread rules, and put-together ways that cut leaks, small drops, and setup harm in use.
Seal materials for mineral oil compatibilityStatic vs dynamic sealing arrangementsThread types: BSPP, NPT, and metricO-ring groove design and surface finishTorque, assembly, and leak testingLesson 3Directional control and flow control valves: solenoid vs manual valves, proportional considerations, and spool choicesThis part explains direction and flow control valves, comparing hand, electric coil, and share options. You will learn spool signs, flow levels, pressure drops, and picking valve answer and control plan for each circuit.
Manual vs solenoid operated valve choicesSpool symbols, center options, and leakageProportional valves and control electronicsFlow control valves: fixed vs adjustableValve sizing for flow, pressure, and dutyLesson 4Reservoir design: sizing rules, breathers, sight gauges, baffles, and settling time calculationThis part covers tank sizing, setup, and extra parts. You will learn space rules, wall design, settle time, and listing breathers, see gauges, and clean spots to help cool, remove air, and fix.
Tank volume rules and return residence timeBaffle layout for de-aeration and coolingBreathers, filters, and moisture controlSight gauges, level switches, and alarmsDrain ports, clean-out covers, and slopesLesson 5Motor selection: matching electric motor power, starting torque, and service factor to pump loadThis part joins hydraulic pump need to electric motor pick. You will learn to count needed power, think of start turn, service part, work class, and start ways to stop false stops and over heat.
Calculating hydraulic power and motor kWStarting torque vs pump breakaway torqueService factor and duty cycle selectionStar-delta and soft starter implicationsMotor enclosure, cooling, and environmentLesson 6Pressure control elements: relief valves, sequence valves, pressure reducing valves — selection and setpoint approachesThis part explains pressure control parts, like relief, order, and pressure cut valves. It covers inside plans, steady, sizing, and real ways for setting and checking safe, same pressure limits.
Direct vs pilot operated relief valvesSetting main relief valves safelySequence valves for staged operationsPressure reducing valves and circuitsPressure override, stability, and chatterLesson 7Filtration strategy: return-line vs pressure-line vs tank suction filters; micron ratings and contamination codes (ISO 4406)This part compares return-line, pressure-line, and suck filter, explaining where each goes, how to pick small size ratings, and read ISO 4406 dirt codes to meet clean and promise needs.
Return-line vs pressure-line filter applicationsTank suction strainers and protection limitsMicron rating, beta ratio, and dirt holdingReading and applying ISO 4406 codesFilter sizing, pressure drop, and service lifeLesson 8Shut-off valves, non-return valves, and drain/check valves: types, materials, and placementThis part details shut-off, no-return, and drain or check valves. It explains valve kinds, stuff, leak ways, start pressure, and best places to make sure safe cut, back flow stop, and control drain.
Ball, gate, and needle shut-off valve usesCheck valve cracking pressure and sizingPilot-operated check valves for load holdingMaterial choices for corrosion and fluid typeDrain and bleed valves for safe maintenanceLesson 9Instrumentation: pressure gauges, temperature sensors, flow meters — selection and mounting pointsThis part covers pick and place of pressure, heat, and flow tools. You will learn true classes, calm, guard, and best put points for start, fix problems, and long watch.
Pressure gauge types and accuracy classesGauge snubbers, isolators, and overpressure limitsTemperature sensor types and immersion rulesFlow meter technologies and selectionPermanent vs test-point instrumentation
