ASTM F1098-87(2004)
(Specification)Standard Specification for Envelope Dimensions for Butterfly Valves-NPS 2 to 24
Standard Specification for Envelope Dimensions for Butterfly Valves-NPS 2 to 24
ABSTRACT
This specification covers standard envelope dimensions for manual (lever and gear actuator) butterfly valves installed in shipboard piping systems. Materials covered by this specification are conventional and ANSI B16.34 class butterfly valves (from NPS 2 to NPS24) of both lug and wafer types.
SCOPE
1.1 This specification provides standard dimensions for manual (lever and gear actuator) butterfly valves installed in shipboard piping systems in NPS 2 to NPS 24, inclusive.
1.2 This specification covers conventional and ANSI B16.34 class butterfly valves of both lug and wafer types.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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AnAmerican National Standard
Designation: F1098 – 87 (Reapproved 2004)
Standard Specification for
Envelope Dimensions for Butterfly Valves—NPS 2 to 24
This standard is issued under the fixed designation F1098; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
TABLE 1 Face-to-Face Dimensions
1. Scope
1.1 This specification provides standard dimensions for
Conventional, ANSI B16.34,
Valve Size,
manual (lever and gear actuator) butterfly valves installed in
200 psig, 150 Class,
NPS
in. (mm) in. (mm)
shipboard piping systems in NPS 2 to NPS 24, inclusive.
5 3
21 ⁄8 (41) 1 ⁄4 (44)
1.2 This specification covers conventional and ANSI
3 7
2½ 1 ⁄4 (44) 1 ⁄8 (48)
B 16.34 class butterfly valves of both lug and wafer types.
3 7
31 ⁄4 (44) 1 ⁄8 (48)
1.3 The values stated in inch-pound units are to be regarded 15
3½ 1 ⁄16 (49) 2 (51)
4 2 (51) 2 ⁄8 (54)
as the standard. The values given in parentheses are for
52 ⁄16 (52) 2¼ (57)
information only.
62 ⁄8 (54) 2¼ (57)
82 ⁄16 (62) 2½ (64)
2. Referenced Documents 9 13
10 2 ⁄16 (65) 2 ⁄16 (71)
2 12 3 (76) 3 ⁄16 (81)
2.1 ANSI Standard:
11 5
14 3 ⁄16 (93) 3 ⁄8 (92)
B 16.34 Small Butt Welding End Valves 1
16 4 ⁄16 (103) 4 (102)
18 4 ⁄16 (116) 4½ (114)
20 5 ⁄16 (128) 5 (127)
3. Dimensions
7 1
24 5 ⁄8 (149) 6 ⁄16 (154)
3.1 Face-to-Face Dimensions:
3.1.1 Valve body face-to-face dimensions are provided in
Table 1.
3.1.2 The face-to-face dimensions are the metal-to-metal
3.2.1 The maximum permissible dimensions for lever- and
dimensions between the valve body flange faces that require
gear-type actuators are provided in Fig. 1.
separate gaskets or the compressed or installed condition for
3.2.2 The handwheel and handle may be on either side of
valves using liners that extend from the body contact faces and
the valve.
act as flange gaskets.
3.2.3 All handwheels and handles rotate clockwise to close
3.2 Actuator Dimensions:
the valve.
4. Tolerances
This specification is under the jurisdiction of ASTM Committee F25 on Ships
4.1 Face-to-Face Dimensions—A plus or minus tolerance
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
of ⁄16 in. (1.6 mm) for all sizes shall be allowed (see Table 1).
Machinery and Piping Systems.
Current edition approved Nov. 1, 2004. Published November 2004. Originally
approved in 1987. Las
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