copper-nickel, with minimum wall thickness as listed for that size
in MIL-T-16420 for Class 3300.
2.9.3
Globe and Angle Valves
MIL-V-24109, bronze body.
2.9.4
MIL-V-24109, bronze body, except provide needle valve cartridges in lieu of
shutoff valve cartridges.
2.9.5
Safety Valves
ASME BPVC SEC VIII D1 and ASME BPVC SEC IX Code stamped safety valve, [Type
[304L] [316L] stainless steel,] [70-30 copper-nickel,] [70-30
nickel-copper,] [bronze,] [carbon steel,] with 0-ring seal union thread
piece ends as provided for MIL-V-24109 valves; factory set and sealed.
2.9.6
Pressure Reducing Valves
NFLPA T3.12.3 R2, nominal pressure rating of [2758] [10,341] [20,680]
[41,364] kPa (gage) [400] [1500] [3000] [6000] psig, body of [stainless
steel,] [bronze,] [aluminum bronze,] [naval brass,] outlet pressure and
capacity as indicated, shock and vibration test not required, allowance
lists not required.
2.9.7
Adapters
Provide suitable tailpiece adapters for installation of valves conforming
to MIL-V-24109 and for other components with similar union end connections.
Tailpieces shall match pipe material: [Type 304L or 316L stainless
steel,] [70-30 nickel-copper,] [70-30 copper-nickel,] socket welding type
for 40 mm 1 1/2 inches IPS and smaller. Tailpieces for tubing: [brazed
O.D. type suitable for 20,682 kPa 3000 psi]. Provide thread piece adapters
for O-ring union installation of components made of material different from
pipe or where welded joint installation is not suitable.
2.9.8
Pressure Gages (High Pressure)
Pressure gages for high pressure systems shall conform to ASME B40.1, for
air, with a scale approximately twice the system working pressure,
nonshatterable safety glass, and pressure blowout back to prevent glass
from flying out in case of an explosion. Gages: [90] [114] mm [3 1/2] [4
1/2] inches in diameter with a steel case and tubing and an accuracy of one
percent full scale in middle half section of scale and 1 1/2 percent of
full scale value in first and last 1/4 sections of scale. Do not fasten
bourdon tube pressure-sensitive elements with low-melting-point solder.
Print on gage faces in red letters "USE NO OIL." Provide pressure snubbers
or equalizer in pressure gage installations on inflow side of a gage valve.
Mount gage branches vertically on top of an air line to avoid branch flow
of condensate and dirt. Connect a gage to an air line or component through
an equalizer, gage valve (slow-opening needle type), and branch with
provision for bleed-off.
2.9.9
Snubbers (or Equalizers)
[Type 304L or Type 316L stainless steel] [70-30 copper-nickel] [70-30
nickel-copper] body with a rated working pressure not less than system
SECTION 15212N
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