Thin walled sleeve

The slide valve is a thin-walled cylinder through which gas flows from the work chamber, through the open inlet valve, through the cylindrical slide valve, and exiting into the pump cavity through the inlet sleeve. The inlet sleeve is a slit in the sidewall of the slide valve. This flow path for the fill stroke is shown in Figure 2.13. 

Ejection may be by means of pins or a stripper plate, or a combination of both. The stripper plate acts on the entire peripheral wall thickness of the part and so distributes the ejection force. This is the preferred method for thin-walled parts, but the method is difficult to apply to anything other than a circular periphery. A variant on this theme is the stripper bar which works on part of the periphery. Most ejection is performed by pins, usually cylindrical in form. Rectangular pins may be used in constricted areas these are often referred to as blade ejectors. Hollow ejector pins known as sleeve ejectors are commonly used to push the molding off small core pins. Ejection of deep-drawn or thin-walled parts is often assisted by an air valve that breaks the vaeuum between the molding and the mold core. 

Two miniature solenoids use thin-wall coil bobbins moulded from Zenite LCP. The unit at the right operates a security lock, which formerly used a coil form consisting of a brass tube with an insulating sleeve and phenolic flanges assembled with adhesive. The solenoid at the left actuates a valve for medical equipment. 

In FEA, if the ratio of wall thickness to radius is equal to or less than 10%, the component can be considered a thin walled stmcture. For both the riser and the composite repair sleeve. 

After draining of the SG, only a thin film of sodium lays on the tubes external walls and on the shell internal wall. In the lower part of the superheater modules bulky sodium residues (until 5 cm thickness-65 g/sleeve) may be present in the 7 thermal protective sleeves around the tubes (Fig. 2). These sleeves are quasi closed spaces with a reduced annular gap less than 2 mm large. 

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