MIL-S-26716A (USAF)
All reservoirs shall be of corrosion resistant steel
3.7.2,1 Reservoirs.
or aluminum alloy suitable for the application and provided with a clean-out
Reservoirs shall be of welded
plate readily accessible for removal.
construction and provided with the necessary inlets, outlets, vents and gage
Stainless steel, brass or non-corrosive fittings shall be
connections.
attached by atomic-hydrogen welding brazing, silver soldering, or other
suitable maethods, as approved by the procuring agency. Method of attaching
fittings shall be accomplished in a manner to reduce the possibility of
electrolytic corrosion or erosion to a minimum. All reservoirs shall be
thoroughly neutralized and cleaned for removal of weld flux, scale, and other
Reservoir
foreign matter from the interior and exterior of the reservoir.
shall be sloped to permit complete drainage of the fluid by gravity. A sump
shall be provided below the inlet port to the pump.
Baffles, if required, shall be installed in such a
3.7.2. 1.2 Baffles.
manner as to prevent pressure pulsations which would affect accuracy and
shall be so designed to reduce turbulence and aeration to a minimum.
Baffles
shall be designed and located with sufficient clearance at the bottom of the
reservoir to prevent an accumulation of foreign material.
Rectangular
reservoirs shall be reinforced and supported in such a manner to insure that
the top of the reservoir will not sag.
The reservoir shall withstand a minimum of
3.7 .2.1.3 Reservoir pressure.
2 psi Internal pressure without leakage or permanent distortion.
3.7.2.1.4 Reservoir evacuation. When required to maintain pressures less
than atmospheric, the reservoir shall withstand a pressure of 1/2 inch Hg
absolute without permanent distortion or leakage.
The reservoir drain line, at least 1
3.7 .2.1.5 Reservoir drain lines.
inch ID, for reservoirs up to 100 gallons capacity, 1 1/2 inches ID for
reservoirs between 100 and 150 gallons and 2 inches ID for reservoirs over
150 gallons capacity shall be piped to the outside at the rear of the test
The drain line shall terminate with a standard pipe coupling flush
unit.
with the rear of the stand, a minimum of 8 inches above the floor, and shall
be sealed with a pipe plug for protection during shipment.
3.7 .2.1.6 Vents.
Unless otherwise specified, all tank vents shall
terminate at the top of the stand with a female pipe coupling provided for
vent lines shall be a
connection to the facility common venting system.
Vent lines shall be sealed with a pipe plug
minimum of 1 inch diameter.
prior to shipment
*
3.7.2.1.7 Waste reservoir
Unless otherwise specified a waste reservoir
Where a waste reservoir is required, it shall be located
shall be provided.
within the inclosure and directly below the sump and above the outlet on the
The outlet
rear of the panel.
It shall have a minimum capacity of 5 gallons.
shall be located a minimum of 16 inches above the floor.
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