2.1.1
FRP Pipe and Fittings
MIL-P-29206. FRP pipe Type I, filament wound with filament wound fitting
or Type II, centrifugally cast with centifugally cast fitting.
2.1.2
Flanged Connections
Flat or flat face-type flanges with raised integral sealing rings inside
and outside of bolt hole circle.
2.1.2.1
FRP Flanges
MIL-P-29206.
2.1.2.2
Gaskets
3 mm1/8 inch full face, Shore A hardness of 60, Buna-N rubber.
2.1.3
Bolting
Stainless steel bolts, nuts, and washers.
2.1.4
Valves
Flanged hand operated line valves, air vent valves, and drain valves are
required where indicated. Valves in noncorrosive aviation fuel systems
shall have aluminum (Alloys 3003 or 6061) or stainless steel (Type 304 or
316) bodies and not contain zinc, zinc-coated, copper, or copper-bearing
materials in contact with the fuel. Other valves shall have carbon bodies
and bonnets. Cast-iron or bronze-bodied valves shall not be furnished or
installed in liquid petroleum service.
2.1.4.1
API Spec 6D, minimum Class 150, steel body, except as specified otherwise,
flexible wedge disc type, conduit disc type or double-disc type with rising
stem, outside screw, and yoke.
2.1.4.2
MSS SP-72, Class 150, except as specified otherwise, nonlubricated
double-seated type capable of handling two-way shutoff, [full bore] [or]
[nominal bore]. Provide valves larger than 50 mm 2 inches with a drilled,
tapped, and plugged opening to drain the valve body.
2.1.4.3
Check Valves
MIL-V-18436, Type IV, Class 150, nonslamming type, except as specified
otherwise.
2.1.4.4
MIL-V-18634, Type III, Class 10, Style D, except as specified otherwise.
2.1.4.5
Vent and Drain Valves
Stainless steel or aluminum construction.
SECTION 15191N
Page 7
Previous Page
