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|  MIL-P-19131(SHIPS)
3.3.8.8.3 Bearing brackets shall be either cast integral with the casing,
securely bolted to the casing on a machined shoulder, or held in alignment-With
the casing by at least two heavy dowels and securely bolted thereto. The use of
bolts alone for securing brackets is prohibited,
3.3.8.9 Bearing lubrication. -
3.3.8.9.1 Ball, roller, sleeve or sliding surface bearings may be lubricated
by the fluid pumped where such bearings are located w ithin the pump casing and are
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not separated by packed glands from the fluid pumped, provided the bearing housings
are so designed that there are no pockets, which may act as water, sediment, or
sludge traps and a continuous circulation of fresh oil is provided through such bear-
ings.
3.3.8.9.1.1 Bearings lubricated by the fluid pumped shall be required to
operate in a manner satisfactory to the bureau or agency concerned throughout the
test specified in 4.2.8.1; however deterioration to a point requiring replacement
of the bearings immediately after the test will not disqualify the bearings.
3.3.8.9.2 Externally mounted ball or roller bearings shall be lubricated in
accordance with Specification FF-B-171 or FF-B- 185, as applicable.
3.3.8.10 The number, type and arrangement of bearings shall be as approved
by the bureau or agency concerned.
3.3.9 Piping and valves. -
3.3.9.1 All suction, discharge, and relief valve connections on class O-2 and
N-2 pumps shall be flanged; the flanged connections shall be in accordance with
Drawings B-104, B-105, B-110, B-176, and B-177, as applicable. Suction and
discharge pressure gage connections shall be flanged; the flange connections shall
be in accordance with Drawing B-214.
3.3.9.2 Gland seal piping shall be 1/8 inch iron pipe size (i. p. s.) extra heavy
steel pipe, with steel valves, steel fittings and steel unions, all screwed.
3.3.10 Drains. - The bottom of all pump casings or heads shall be provided
with a drain connection. Drains shall be fitted to drip pockets.
3.3.11 Relief valves. -
3.3.11.1 Relief valves shall be in accordance with Specification MIL-V- 20065.
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