Boiler Accessories a Complete And Authoritative Treatise On the Various Access
Boiler Accessories a Complete And Authoritative Treatise On the Various Access
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The valve shown in Fig. 36 gets its name from the globular shape of the casing which encloses the valve. Extending across this whole casing is a substantial diaphragm, the central portion BOILER ACCESSORIES 37 of which is in a plane parallel with the length of the pipe. The open- ing is cut in this portion, horizontal in the figure, through which steam or other fluid may pass when the valve is opened. When the valve is closed, a cap is forced down to close its opening. The rim around the openin...g is known as the valve-seat. The valve-cap is operated by a spindle, which passes through the bonnet of the valve and is mounted at the upper end by a small wheel or handle. To prevent the escape of steam around this spindle, a stuffing-box is provided. The valve- cap may or may not rotate as the spindle turns; usually it does not. The valve shown in Fig. 36 is the ordi- nary globe valve known to the trade as the "Competition" valve. It is the cheapest valve of the type, and is not satisfactory where absolutely tight work is required.
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To quickly assess the difficulty of the text, read a short excerpt:
The valve shown in Fig. 36 gets its name from the globular shape of the casing which encloses the valve. Extending across this whole casing is a substantial diaphragm, the central portion BOILER ACCESSORIES 37 of which is in a plane parallel with the length of the pipe. The open- ing is cut in this portion, horizontal in the figure, through which steam or other fluid may pass when the valve is opened. When the valve is closed, a cap is forced down to close its opening. The rim around the openin...g is known as the valve-seat. The valve-cap is operated by a spindle, which passes through the bonnet of the valve and is mounted at the upper end by a small wheel or handle. To prevent the escape of steam around this spindle, a stuffing-box is provided. The valve- cap may or may not rotate as the spindle turns; usually it does not. The valve shown in Fig. 36 is the ordi- nary globe valve known to the trade as the "Competition" valve. It is the cheapest valve of the type, and is not satisfactory where absolutely tight work is required.
What to read after Boiler Accessories a Complete And Authoritative Treatise On the Various Access?
You can find similar books in the "Read Also" column, or choose other free books by Tative20treatise20on20the20various20accessori to read onlineMoreLess
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