Dear Acr,

It consists of one four stage reciprocating air cpmpressor driven by an electric motor, one Junkers free piston engine operating a four stage air compressor, and related flasks, piping, manifold and valves. Both compressors are located in the maneuvering room. The manifold is located in the control room.

The motor weights 1700 kg (3750 lb.) and is rated at .56 to 62 kw on a voltage range of 110 to 170 volts, with a related speed range of 535 to 600 rpm.

The direct connected compressor weights 115 kg (2440 lb.) takes 76 to 84 pse (75 to 83 H.P.) depending on revolutions and is rated at 14 to 15.4 liters per minute (.493 to ,543) cu ft. per minute). The discharge pressure of the air is 205 kg/cm2 (2920psi).

The Junkers compressor consists of a free pistion diesel engine and compressor in a common housing. The assembled weight is 560 kg (1234 lb.) excluding muffer, tail pipe and insulation. It operates at 780 to 840 rpm, and is rated at approximately 50 horsepower.

The related compressor is rated at an effective air intake of 2 cu. meters per minutes (70.6 cu. ft. p.m.) and a discharge of 10 liters per minute (.353 cu. ft. p.m.).

The air flasks have a total capacity of 6200 liters (219 cu. ft.) at 2920 psi. This is sufficient air to evacute all main ballast, fuel ballast and bow and stern buoyancy tanks once at a depth of 180 feet, or 5.56 times the free air volume of these tanks. Most of them are lcated in the superstructure, but six flasks which are part of four banks are located in the maneuvering room and engine room.

The maximum operating pressure of the system as has been stated, is 2920 psi.

The high pressure air manifold is a steel housing to which steel valve housing are welded. Valve bonnets are a special bronze, spindles steel, discs steel, springs phosphor bronze and threated seat insert is 1s/8 chrome nickel steel. Air p[iping is copper plated steel. Materials for valves are the same as those for the manifold.

Scott