MIL-PRF-12125H
TABLE IV. Stem materials.
Specification
UNS number 1/
ASTM B21/B21M
C46400, C48200
ASTM B61
C92200
ASTM B62
C83600
ASTM B140/B140M C31600, C32000
ASTM B371
C69400, C69700
ASTM B584
C86400, C86700, C87400, C87500, C87600
SAE J461
C67500
1/ Unified Numbering System (UNS) designation for wrought and cast
copper alloys, in accordance with SAE HS1086.
3.4 Working and hydrostatic pressure. Valves shall withstand a working pressure of not
less than 200 pounds per square inch (psi) (1380 kilopascals (kPa)) for water, oil, or gas at
temperatures up to 150±5 °F (65 ± 3 °C), and a hydrostatic shell pressure test of not less than
350 psi (2410 kPa). Leakage shall not exceed .6 cubic inches (in3) (10 cubic centimeters (cc))
per hour per inch (25.4 mm) of diameter (see 4.4.1, 4.4.2 and 4.4.3.1).
3.5 Style A - threaded. The inlets and outlets of style A valves shall have internal NPT
(FNPT) threads in accordance with ANSI/ASME B1.1. The threads shall be concentric with the
axis of the port, and variations in alignment shall not exceed 0.062 in. (1.6 mm) per foot.
Threads shall be chamfered at the valve inlet and outlet near the major diameter of the thread at
an angle of 45 degrees with the axis of the thread. The chamfer shall be concentric with the
thread (see 4.4.1 and 4.4.2).
3.6 Style B - flanged. Flanged valves shall be faced and drilled in accordance with
ASME B16.1 (see 4.4.1 and 4.4.2).
3.7 Human factors engineering (HFE). A force of not more than 20 pounds (lb)
[10 kilograms (kg)], using one hand, shall be required to open or close the valve at maximum
operating pressure. The valve shall be labeled "OPEN" and "CLOSE" with a double headed
arrow indicating direction (see 4.4.1 and 4.4.2).
3.8 Treatment and painting. The outside portions of the valve normally painted shall be
cleaned, treated, and painted in accordance with the manufacturers standard practice for gate
valves. Unless otherwise specified (see 6.2), the top coat color shall be camouflage green
(see 4.4.1 and 4.4.2).
3.9 Identification marking. Unless otherwise specified (see 6.2), the valves as a
minimum shall be identified and marked with the following (see 4.4.1 and 4.4.2):
a. Manufacturer and Part No. (see 1.3)
b. Manufacturer Serial No.
c. Specification No.
6
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business