Recent Blogs
Flutter Wheel: Sawmill Motion and Water-Power Calculator | FIRGELLI
Explore the water wheel and crank drive of a sash sawmill. Estimate power, torque at entered RPM and float passage frequency with explicit model assumptions.
Flexible Water Main: Joint Motion and Geometric Comparison | FIRGELLI
Explore joint-motion concepts and idealized projection and slip terms. The calculator does not establish physical pipeline displacement or seismic capacity.
Flexible Pipe Joints: Free Thermal Growth Comparison | FIRGELLI
Calculate free pipe growth from length, temperature rise and expansion rate. Compare an axial allowance while keeping joint motion and restraint requirements clear.
Filtering Cistern: Chamber Volume and Flow Calculator | FIRGELLI
Follow a historical cistern’s layered filter bed and perforated collecting pipes. Calculate nominal volume/flow time and rectangular plan geometry separately.
Emery Rotary Pump: Guided Wings and an Eccentric Hollow Driver
Explore the Emery pump with four guided rigid wings, a concentric pin groove and an eccentric hollow driver. Includes geometric pocket-volume calculations.
Driven Well Mechanism Explained: How It Works, Parts, Suction-Lift Limit, Diagram & Calculator
Explore a driven well’s screen and water path. Compare atmospheric head, pump allowance, static level and drawdown to calculate a remaining suction-head budget.
Double-Piston Reaction Hydraulic Ram: Waste Valves and Water Delivery
Explore common-spindle waste valves, reaction disc and separate delivery check in the historical hydraulic ram. Includes an average water-delivery calculator.
Double-beat Disc Valve Mechanism: How It Works, Parts, Force Balance and Pump Uses Explained
Explore an annular double-beat disc valve with two concentric seating edges. Compare seated pressure load and geometric curtain area from diameter ratio and lift.
Double-acting Lift and Force Pump: How It Works, Parts, Formula, Diagram and Uses Explained
Explore a vertical four-valve lift-and-force pump. Calculate lower-end, rod-side and complete-cycle swept volumes from bore, rod diameter and stroke.
Double-acting Force Pump Mechanism: How It Works, Diagram, Parts, Uses & Flow Calculator
Explore a four-check-valve double-acting pump. Compare rod-corrected displacement, theoretical mean flow and estimated flow at an entered volumetric efficiency.
Double-acting Differential Pump Mechanism: How It Works, Diagram, Parts, Formula and Uses
Explore a differential pump with a valved lower bucket and linked upper solid plunger. Compare delivery on each stroke, full-cycle displacement and volume balance.
Domestic Filter: Historical Gravity Barrel and Ideal Flow Calculator
Explore a historical gravity-fed barrel filter. Compare ideal saturated-bed flow using equivalent area, maintained water head and measured whole-bed conductivity.
Disc Water Meter: Nutating Disc Motion and Calibrated Volume Calculator
Explore a nutating disc water meter. Convert observed cycles into calibrated volume, compare register gearing and estimate an assumed unmetered-volume allowance.
Disc Valve and Guard Mechanism: How It Works, Parts, Diagram, and Pump Uses Explained
Explore an elastic disc valve beneath a perforated curved guard. Compare guard-limited edge lift, approximate opening area and nominal sheet volume.
Diaphragm Pump Mechanism: Crank Drive, Valves and Flow Calculator
Explore a crank-driven diaphragm pump with animated check valves, exact linkage motion and shape-based ideal displacement and flow calculations.
Diaphragm Pump Mechanism: How It Works, Parts, Diagram, and Industrial Uses Explained
Follow a flexing diaphragm and alternating check valves. Calculate swept volume and ideal mean flow, with estimated delivery from an entered efficiency.
Dean Steam Pump Mechanism: How the Direct-Acting Duplex Reciprocating Pump Works, Parts & Uses
Explore a duplex steam pump with cross-coupled valves. Compare steam and water piston areas and ideal delivery pressure on full-bore and rod-side strokes.
Current Motor Mechanism: How Hydrokinetic River Turbines Work, Parts, Formula and Diagram
Explore a cased propeller current motor and compare the incoming kinetic power flux at two water speeds. Includes an interactive animation and velocity-cubed calculator.
Current Meter Mechanism: How It Works, Diagram, Parts, and Velocity-Area Discharge Formula
Explore a cup current meter. Apply an entered linear calibration to counted revolutions and sample time, then estimate sub-area flow and one-count velocity sensitivity.
Compound Beam Pumping Engine Mechanism: How It Works, Parts, Diagram and Uses Explained
Follow a compound beam engine driving a single-acting water plunger. Calculate swept volume, average delivery and mean rod speed from pump dimensions and cycle rate.
Cochrane Rotary Pump: Eccentric Piston, Sliding Wing and Mean-flow Calculator
Follow the Cochrane pump’s eccentric piston and wing sliding in a casing pocket. Estimate mean delivery and hydraulic output power from entered pump characteristics.
Chapman Aspirator or Vacuum Pump: How It Works, Parts, Diagram and Lab Uses Explained
Explore a Chapman water-jet aspirator cutaway and calculate ideal water speed, pressure head and the temperature-dependent theoretical vacuum limit.
Chain Pump Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses
See discs on an endless chain lift water through a riser. Estimate swept flow, delivered flow and hydraulic output power with a stated volumetric-efficiency assumption.
Cary Rotary Pump: Cam-Guided Vanes, Animation and Flow Calculator
Explore Cary’s fixed-cam rotary pump and sliding vanes in an interactive animation. Estimate flow from entered displacement, shaft speed and volumetric efficiency.
Camden Turbine Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses
Explore the Camden turbine’s two bucket rows and their discharge directions. Calculate water power, shaft power, losses and torque from an entered operating point.