 | Robert Grimshaw - 1896 - 412 σελίδες
...from a table of areas of circles or figured out by multiplying the square of the diameter by 0.7854), the pressure per square inch at which the valve will blow off will be known. Where it is desired to calculate the effect of the pee two distances should be measured,... | |
 | Robert Grimshaw - 1898 - 412 σελίδες
...from a table of areas of circles or figured out by multiplying the square of the diameter by 0.7854), the pressure per square inch at which the valve will blow off will be known. Where it is desired to calculate the effect of the pee two distances should be measured,... | |
 | 1902 - 696 σελίδες
...the spring (Fig. 3) compresses the spring and raises the blow-off pressure. DIRECTIONS FOR USE AN1J CARE OF SAFETY VALVES. 6. See that the safety valve...trial. To do so, get up steam on the boiler, and as soon as the steam gauge shows the blow-off pressure, shift the weight until the valve just commences... | |
 | 1902 - 678 σελίδες
...compresses the spring and raises the blow-off pressure. DIRECTIONS FOR UHE AND CARE OF SAFETY VALVES. (5. See that the safety valve is attached directly to...trial. To do so, get up steam on the boiler, and as soon as the steam gauge shows the blow-off pressure, shift the weight until the valve just commences... | |
 | 1902 - 676 σελίδες
...VALVES. 6. See that the safety valve is attached directly to the boiler. If there is a stop- valve between the valve and boiler, have it removed or arranged...trial. To do so, get up steam on the boiler, and as soon as the steam gauge shows the blow-off pressure, shift the weight until the valve just commences... | |
 | 1907 - 668 σελίδες
...overload the valve or increase the tension of the spring, and take care that it is not done by others. In practice, the position of the weight on the lever...trial. To do so, get up steam on the boiler, and as soon as the steam gauge shows the blow-off pressure, shift the weight until the valve just commences... | |
 | 1907 - 636 σελίδες
...overload the valve or increase the tension of the spring, and take care that it is not done by others. In practice, the position of the weight on the lever...trial. To do so, get up steam on the boiler, and as soon as the steam gauge shows the blow-off pressure, shift the weight until the valve just commences... | |
 | 1908 - 212 σελίδες
...the number of free coils in the spring, and by the area of the valve in square inches. Product II. be the pressure per square inch at which the valve will blow off. The weight of the valve and of the spring should in strictness be added to Product I, when the construction... | |
 | Hubert Edwin Collins - 1908 - 460 σελίδες
...of the valve in square inches. Product II. Divide Product I by Product II and the quotient will be the pressure per square inch at which the valve will blow off. The weight of the valve and of the spring should in strictness be added to Product I, when the construction... | |
 | Calvin Franklin Swingle - 1909 - 742 σελίδες
...of the valve in square inches. Product II. Divide Product I by Product II and the quotient will be the pressure per square inch at which the valve will blow off. With a dead weight or a lever-loaded valve the force required to lift it remains the same, no matter... | |
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If there is a stop-valve between the valve and boiler, have it removed or arranged so that it cannot be shut. Take care that the valve does not become corroded and stick to its seat. It is a good plan to frequently lift the valve from the seat and see... 