Standard Specification for
Fiber-Reinforced Plastic Fans and Blowers1

This standard is issued under the fixed designation D 4167; 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 (e) indicates an editorial change since the last revision or reapproval.

This standard has been approved for use by agencies of the Department of Defense.

1. Scope *

1.1 This specification covers centrifugal and axial fans and
blowers with airstream components fabricated of fiberreinforced thermoset plastics (FRP) for corrosion resistance.
Internal structures may include encapsulated metal fastening
devices, hubs, and shafts.

1.2 Reinforcing materials other than fibrous glass may be
used in the fabrication, provided the fans and blowers produced
meet all the requirements of this specification.

1.3 The term “fans” as used in this specification includes
fans and blowers, both centrifugal and axial.

1.4 The purpose of this specification is to provide users,
system designers, specifiers, and manufacturers of FRP fans
with minimum standards for fan construction and a common
basis for determining safe operating speeds.

1.5 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are provided
for information only.

NOTE 1—There is no similar or equivalent ISO standard.
NOTE 2—Appendix X2 contains a list of documents that may be of
interest to designers of fan systems.

1.6 This standard does not puport to address all of the safety
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
helath practices and determine the applicability of regulatory
limitations prior to use.

2. Referenced Documents

2.1 ASTM Standards:
C 582 Specification for Contact-Molded Reinforced, Thermosetting Plastic (RTP) Laminates for Corrosion Resistant
Equipment2
D 883 Terminology Relating to Plastics3
D 2563 Practice for Classifying Visual Defects in Glass

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