NATIONAL STANDARD FIRE PUMP
16 × 9 × 12
CAPACITY
750 GALLONS PER MINUTE, OR
3 GOOD 11⁄8-IN. SMOOTH NOZZLE
FIRE STREAMS
FULL SPEED
70 REVOLUTIONS PER MINUTE
NEVER LET STEAM GET BELOW
50 POUNDS, NIGHTS, SUNDAYS
OR AT ANY OTHER TIME
The name “Underwriter” has been largely used for a considerable time to designate the type of pump covered by the principal features of these specifications. While our preferences are against the use of this word as designating any piece of apparatus objections will not be raised at the present time to its being continued on name plates in place of the words “National Standard,” if manufacturers so desire.
b. This plate must have an area of not less than one square foot, and must be made of an alloy at least two-thirds aluminum and the remainder zinc. The letters must be at least one-half inch in height, plain and distinct, with their surfaces raised on a black background and buffed off to a dead smooth finish.
The name of pump manufacturer may also be placed on this plate, if desired.
c. A smaller plate of composition must be attached to steam chest bearing the size of pump, the shop number, and the name of shop in which the pump was built.
6. Strength of Parts.
a. The maker must warrant each pump built under these specifications to be at time of delivery, in all its parts, strong enough to admit of closing all valves on water outlet pipes while steam valve is wide open and steam pressure eighty pounds, and agree to so test it before shipment from his works.
b. The pump must be warranted so designed and with such arrangement of thickness of metal that it shall be safe to instantly turn a full head of steam on to a cold pump without cracking or breaking the same by unequal expansion.