XX-D-370D
base shall be provided with a threaded portion suitable for installation in 2-inch NPT bung openings. The cylinder head shall be either malleable cast iron or aluminum and shall have a rack and pinion drive. The riser may either be cast integral with the cylinder head or consist of pipe with a 90 degree elbow at the top. In either case, the overall height shall be not greater than
22 inches. The elbow shall be tapped with not less than 1/2-inch, nor more than 3/4-inch NPT threads. The head and base castings shall secure the cylinder barrel in place by the use of long bolts.
3.6.2 Suction pipe. Each pump unit shall be equipped with an adjustable telescopic type suction pipe. The suction pipe shall be made from not less than a 1/2 inch standard weight NPS galvanized steel pipe or aluminum tubing. The suction pipe shall be approximately 21 inches long in the fully retracted position and approximately 40 inches long in the fully extended position.
The suction pipe end that contacts the bottom of the oil containers shall allow full flow with a minimum of resistance.
3.6.3 Screen. A readily removable 30 mesh metal screen shall be installed in the inlet port of the pump. The screen shall be 30 mesh of corrosion-resistant metal wire with an effective flow area of not less than two times the inlet port area.
3.6.4 Bung adapter. The bung adapter shall be either cast iron, malleable iron, bronze, or die-cast zinc base alloy. The bung adapter may be part of the pump body and of the same material. The bung adapter shall be threaded for use on a 2-inch standard straight pipe thread bung opening.
3.6.5 Discharge assembly. Each pump unit shall be equipped with an iron discharge pipe not more than 6 inches long and not less than 1/2 inch in size. The pipe shall be threaded at both ends with NPT threads. The discharge pipe of each pump unit shall be provided with an antidrip iron faucet or nozzle. The faucet or nozzle shall be so designed that liquid remains in the discharge pipe at all times. The discharge end of the faucet or nozzle shall have an inside diameter of not less than 1/4 inch.
3.6.6 Handcrank. The handcrank shall be of malleable iron, cast iron, or steel and shall withstand rough useage. The handcrank shall have a wooden or plastic handgrip. The handcrank shall be easily replaceable. When specified (see 6.2.1), the handcrank shall be provided with a padlock conforming to FF-P-101, type EW with a chain as specified in FF-P-101, to lock the handcrank when the pump unit is not in use. When tested in accordance with 4.5.2 3, the maximum force required to operate the handcrank shall not exceed 25 pounds.
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