The Trofimoff valve (German: Trofimoff-Schieber) (also Trofimov, Troffimoff or Trofimof) is a springless pressure-compensation piston valve for steam...

driver. Cutoff Reversing gear Steam locomotive nomenclature Trofimoff valve Steam Locomotive Valve Gear Archived 5 January 2012 at the Wayback Machine Animations...

the regulator, the Trofimoff piston valves were removed. The Trofimoff piston valve consisted of two fixed discs secured to the valve spindle, and two junk...

the time, fitted engine no. 851 with Trofimoff type by-pass piston valves as an experiment. The Trofimoff valve was claimed to afford ideal conditions...

was eventually removed. In 1935, number 2544 Lemberg received Trofimoff piston valves of an ingenious design with automatically varying steam passages...

driven by Heusinger valve gear with Kuhn slides. The factory-fitted Schulz piston valves were late replaced by Trofimoff piston valves. These gave better...

qualities when running light. Not until the 1980s were Trofimoff valves and cylinder safety valves installed on some locomotives at RAW Meiningen. This...

rebuild, IfS/DR mixer preheaters, pressure-compensating piston valves (Trofimoff valves) and new Stühren ash pans were installed. The wider outer firebox...

combustion chambers, mixer-preheater systems, new welded cylinders, Trofimoff valves and Witte smoke deflectors. The reinforced Type 58E Rekokessel was...

axle, the locomotives had Heusinger valve gear with unsprung Müller balanced slide valves and, later, Trofimoff valves. These Neubaulokomotiven were a fully...

with three full bore boiler safety valves (Ackermann valves, nominal width 60). The engines were given Trofimoff valves and, apart from 01 501 and 01 520...

documents were handwritten notes headed "Micromachining Project" and "Micron-Valve Project", and a document that an expert at the trial linked to the ALARM...