ASTM F1098-87(2015)

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F1098 − 87 (Reapproved 2010) F1098 − 87 (Reapproved 2015)An American National Standard
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.
1. 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. mathematical conversions to SI units that are provided for information only and are not considered standard.
2. Referenced Documents
2.1 ANSI Standard:
B 16.34 Small Butt Welding End Valves
3. Dimensions
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 dimensions between the valve body flange faces that require separate
gaskets or the compressed or installed condition for valves using liners that extend from the body contact faces and act as flange
gaskets.
3.2 Actuator Dimensions:
3.2.1 The maximum permissible dimensions for lever- and gear-type actuators are provided in Fig. 1.
3.2.2 The handwheel and handle may be on either side of the valve.
3.2.3 All handwheels and handles rotate clockwise to close the valve.
4. Tolerances
4.1 Face-to-Face Dimensions—A plus or minus tolerance of ⁄16 in. (1.6 mm) for all sizes shall be allowed (see Table 1).
5. Keywords
5.1 envelope dimensions; gear actuator butterfly valves; lever butterfly valves; manual butterfly valves
This specification is under the jurisdiction of ASTM Committee F25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
Machinery and Piping Systems.
Current edition approved March 1, 2010May 1, 2015. Published April 2010June 2015. Originally approved in 1987. Last previous edition approved in 20042010 as
F1098 – 87 (2004).(2010). DOI: 10.1520/F1098-87R10.10.1520/F1098-87R15.
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