Recent Blogs
Sellers' Restarting Injector: How It Works, Parts, and Locomotive Feedwater Uses Explained
Explore the fixed tubes and concentric overflow checks in the Sellers restarting injector. Compare throat areas and a selected static delivery-pressure threshold.
Nathan Injector: Successive Steam-Jet and Overflow Topology
Explore Nathan injector steam-jet and overflow passages. Calculate water-to-steam mass-flow ratio and water volume from entered flows, density and time.
Lunkenheimer Injector: Four Fixed Nozzles and Integral Valves
Explore the Lunkenheimer injector's four fixed nozzles and labelled control valves. Compare illustrative steam- and water-valve positions.
Eberman Injector Mechanism: How the Steam Lifting Injector Works, Parts, and Cone Geometry
Explore the Eberman injector’s sliding combining tube and overflow check. Calculate ideal steam-and-water mass flow and feedwater heating with an animated cutaway.
Standard Injector Mechanism Explained: How It Works, Parts, Diagram & Calculator
Standard injector explained — how a steam-driven feedwater injector works, sizing formula, worked example for heritage boilers, and troubleshooting failures.
Sellers' Self-adjusting Injector Mechanism: How It Works, Parts, Diagram, and Uses Explained
Sellers' self-adjusting injector explained — steam-driven boiler feedwater pump that auto-recovers from breaks in flow. Used on 19th-century locomotives and mill engines.
Schaeffer and Budenberg Injector Mechanism: How It Works, Parts, Diagram and Uses Explained
Explore the Schaeffer and Budenberg exhaust injector, its hinged combining tube and starting sequence, with a clearly bounded fixed-density calculation.
Penberthy Injector: Historic Automatic Flow Path
Explore the historic Penberthy automatic injector. Follow steam admission, suction, combining, overflow and delivery through an interactive passage diagram.
Peerless Automatic Injector: Historic Flow Path
Explore the Peerless automatic injector’s lifting and forcing sections. Follow steam admission, water entrainment, combining and delivery in a staged cutaway.
Park Injector: Hiscox Double-Tube Control Sequence
Explore the Park injector’s tandem lift and force tubes, separate handle commands and automatic overflow check in an interactive component-state diagram.
Leader Injector: Historic Double-Tube Sequence
How the historic Leader Injector uses a three-stage hand-lever sequence to control its lifting nozzle, force valve, overflow and double-tube paths.
Körting Injector: Two-Stage Flow and Volume-Ratio Comparison | FIRGELLI
Explore the historical lifting and forcing stages of a Körting injector. Compare entered volume ratios and temperatures without a performance prediction.
Excelsior Injector: Steam and Water Pressure Calculator | FIRGELLI
Follow an Excelsior injector valve sequence and compare static suction pressure, water vapour pressure and a specified delivery-pressure target.