MIL-PRF-53047B
3.3.8.3 Hose assembly. Hoseline assemblies of 3/4 inch nominal ID tubing or hose, 149.00 ±
1.00 inches long, shall be provided. Each hoseline shall be a single piece, with a minimum bend
radius not greater than 4.00 inches. Each assembly shall be provided with class 1, cam-locking,
male coupling halves, 3/4 inch nominal size, conforming to ASTM F 1122 at both ends. The hose
assemblies shall have captivated caps conforming to ASTM F 1122 at both ends. The assembly
shall be rated for a 150 pounds per square inch (psi) working pressure, and shall conform to the
environmental requirements specified herein.
3.3.8.4 Coupling assembly. Quick-disconnect hose couplings, comprised of two assembled
coupling halves, shall be provided. The coupling halves shall be class 1, female, 3/4 inch nominal
size, cam-locking fittings, conforming to ASTM F 1122 with internal and external pipe threads,
respectively.
3.3.8.5 Adapter, 2-inch. Quick-disconnect reducing adapters, comprised of two assembled
coupling halves, shall be provided. The coupling halves shall be a class 1, male, 2 inch nominal
size, cam-locking fitting, conforming to ASTM F 1122; and a class 1, female, 3/4 inch nominal
size, cam-locking fitting, conforming to ASTM F 1122. The fittings shall be assembled with a 2 x
3/4 inch, external pipe thread, reducing bushing.
3.3.8.6 Adapter, 1 1/2-inch. Quick-disconnect reducing adapters, comprised of two
assembled coupling halves, shall be provided. The coupling halves shall be class 1, male,
1 1/2 inch nominal size, cam-locking fitting, conforming to ASTM F 1122; and class 1, female,
3/4 inch nominal size, cam-locking fitting conforming to ASTM F 1122. The fittings shall be
assembled with a 1 1/2 x 3/4 inch, external pipe thread, reducing bushing.
3.3.8.7 Adapter, tank return. An assembled adapter shall be provided, to afford a quick-
disconnect capability at the tank. The adapter shall be comprised of a class 1, female, 3/4 inch
nominal size, cam-locking coupling half conforming to ASTM F 1122; a 3/4 x 1/2 inch, internal
pipe thread, 90-degree reducing elbow; and a 1/2 x 3/8 inch, external pipe thread, reducing
nipple. The coupling half shall be fitted with a captivated, class 1, 3/4 inch nominal size, cam-
locking plug conforming to ASTM F 1122.
3.3.8.8 Adapter, tank feed. An adapter shall provide quick-disconnect capability at the tank
shall be provided. The adapter shall be comprised of a class 1, female, 3/4 inch nominal size, cam-
locking coupling half conforming to ASTM F 1122, on or creating the branch of a tee that is 6.00
inches long on the run. The tee shall have a 1 1/4 inch external pipe thread on one end of the run,
and shall be fitted with an 8.00 ± .12 inch length of 1.75 inch ID, reinforced hose on the other.
The hose shall be provided with suitable clamps for attachment to the tee and to the interfacing
unit. The coupling half shall be fitted with a captivated, class 1, 3/4 inch nominal size, cam-
locking plug conforming to ASTM F 1122.
3.3.8.9 Storage. Each unit shall have provisions to store and protect ancillary items supplied
with the water chiller other than the mounting pads and cradle. The storage units shall be pliable,
waterproof bags, in sufficient quantity so that no bag and its contents shall exceed 37 pounds.
Hoses, tubing, couplings, fittings, or assemblies for interconnection shall be protected against
contamination when not in use.
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