Neptun

Eskaders fire-tube boilers (Mini-Gnom, Mini-Neptun, Neptun, Mini-Ran, Ran) is designed to suit model steam boats in wich the center of gravity is wanted as low as possible. The boilers has a fire tube in the length direction which is crossed by several tubes. This construction gives a very rapid vaporization. To isolate the boiler a layer of Rock-wool is recommended along with a layer of soft aluminium plate or wood strips and some brass tape to keep the isolation in place. Because the flame is completely surrounded by the boiler, only a thin layer of isolation is required for the hull around the boiler. The Neptun is suitable for steam engines like the D-10, Score, Compound E-11, Twin, Triple expansion engine and can be used in smaller steam boats up to the length of 78 3/4\" (200 cm). It has 4 connections, threaded 1/4\"x32 on the end of the boiler for level gauge, manometer, check valve with connection for tap tapered union. On the top of the boiler there is one connection threaded 5/16\"x26 for safety valve.   Neptun/1 Kit with ready made parts Important! needs to be hard soldered and pressure tested! - without fittings   Neptun/2 Soldered boiler, silver soldered, pressure tested, unisolated and without fittings.   Neptun/3 Ready to run boiler with isolation, wooden exterior and all fittings except burner (level gauge, check valve, safety valve, steam valve and syphon with manometer) Suitable accessories for kit or soldered boiler: 123/2 - Level gauge without tap. 3/16\" glass, threaded 1/4\"x32                                         or 122/2 - Level gauge with tap. 3/16\" glass, threaded 1/4\"x32 154/3 - Steam valve, angled for 3/16\" tube 113/3 - Syphon, threaded 1/4\" 132/2 - Safety valve, releases at 4,5 bar (kg/cm3) 166/2 - Check valve 145/1 - Feed pump, manual     201 - Steam wistle   1050 - Manometer Ø 3/4\" (19 mm)                          or   1051 - Manometer Ø 1\" (25 mm)