Flanges high-pressure

Figure 12-2T. Medium- or high-pressure, double-acting cylinder with flanged liner. The liner is locked in place by a flange between head and cylinder barrel. A step on the liner O.D. permits easy insertion. The cylinder may be made of cast-iron, nodular iron, or cast steel, depending on operating pressure. Note Optional two-compartment distance piece (type D) designed to contain flammable, hazardous, or toxic gases is illustrated. (Used by permission Bui. 33640, June 1985. Dresser-Rand Company.)...

Steel pipe and tubing are relatively inexpensive and are used in many hydraulic and pneumatic applications. Steel is used because of its strength, suitability for bending and flanging and adaptability to high pressures and... 

Fig. 4.3-19. Different kinds of flanges of multilayer high pressure vessels [34]. a, forged flange shrunk onto the multilayer vessel body b, forged thinner flange ring shrunk onto the multilayer vessel body c, flange made out of the same material as vessel body d, forged flange ring welded directly to the inner liner of the multilayer vessel.

Figure 5.1-4. Arrangement of thermocouples and peroxide injection, a. High pressure lube b, flange c, lens-ring d, boll e, thermocouple f, gland nut and sleeve.

The pressure vessels are hollow cylinders, of 100- to 10,000-liter capacity, having a flange onto which the cover is fastened by means of bolts and nuts. The bottom of die vessel is usually hemispherical for greater strength. Autoclaves are almost always made of iron, either cast steel or cast iron, the former being safer to use at high pressures. Sheet iron is also used, in wall thicknesses up to 40 mm., in either riveted or welded construction. The reluctance in many dye plants to use welded autoclaves is entirely unjustified and has arisen simply because in the early days of the industry welding processes had not been perfected. 

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