MIL-C-0052980C(ME)
3.21 Clas s 1, ta nk-mou nted.
The compressor unit and power unit
shall be mounted on a base attached to the air-receiver tank.
The air-receiver tank for the class 1
3.21.1 Air-receiver rank.
compressor shall be of the horizontal type and shall be constructed
in accordance with the ASME Boiler and Pressure Vessel Code, section
VIII.
The receiver shall bear the ASME stamp and no welding or
other activation shall be permitted after the receiver has been
Unless otherwise specified (see 6.2), the capacity of
certified.
the air-receiver tanks for the 5 cfm compressors shall be not less
than 60 gallons and for the 15 cfm and 25 cfm compressors shall be
Unless otherwise specified (see 6.2), the
not less than 80 gallons.
air-receiver tank fittings shall include a globe discharge valve, a
drain cock, and a O to 300-psig pressure gauge having 10 psig or
smaller increments.
The air-receiver tanks shall include a pressure
relief valve conforming to ASME Boiler and Pressure Vessel Code. The
receiver shall be provided with a steel base or not less than four
mounting feet for horizontal mounting. When equipped with a steel
base, openings shall be provided to permit insertion of forklift
tines.
Each opening shall be not less than 11 inches by 3 inches in
size; openings shall be located such that the center of gravity of
the compressor falls between the centers of forklift openings. A
means shall be provided on the receiver for securing the air hose.
3.22 Class 2, handtruck mounted.
The compressor unit and power
unit shall be mounted on a lightweight, 2-wheel handtruck braced to
A handle shall be provided which will permit
minimize vibration.
moving by one person in accordance with MIL-STD-1472, 5.9.11 (see
3.7.2), when the handle is elevated to a height of not less than
The class 2 compressor shall
30 inches and not more than 48 inches.
be equipped with a combination storage rack and landing legs mounted
on the handle end of the truck similar to that shown on figure 1
(see 6.8).
The landing legs shall be equipped with soft rubber feet
so spaced as to minimize movement of the compressor during
operation.
The complete assemblage shall withstand vibration,
falling, and bumping, encountered by this type of equipment without
malfunction or damage when operated as specified herein.
The dry
weight of the class 2, size 5 cfm compressor shall not exceed 160
pounds.
The air-receiver tank for the class 2
3.22.1 Air-receiver tank.
compressor shall have a capacity of not less than 2 gallons and
shall be constructed in accordance with the ASME Boiler and Pressure
Vessel Code, section VIII. Air-receiver tanks with an inside
diameter of 6 inches or less, which are not within jurisdiction of
the ASME Boiler and Pressure Vessel Code, section VIII, shall be
designed for a proof pressure of 300 psig.
Unless otherwise
specified (see 6.2) , the air-receiver tank fittings shall include a
drain cock, and a 0- to 300-psig pressure gauge having 10 psig or
smaller increments.
The air receiver tanks shall include a pressure
relief valve conforming to ASME Boiler and Pressure Vessel Code.
The pressure gauge shall be mounted in a manner to prevent damage
due to vibrations.
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