[INCH-POUND] WW-H-191E May 27, 1998
SUPERSEDING WW-H-191D February 1, 1990
FEDERAL SPECIFICATION
HEATER, FLUID, INDUSTRIAL (INSTANTANEOUS, STEAM, WATER CONVERTOR TYPE)
The General Services Administration has authorized the use of this specification by all Federal agencies.
1. SCOPE AND CLASSIFICATION
1.1 Scope. This specification covers shell and tube water heaters that use steam in the shell to raise the temperature of a continuous flow of water.
1.2 Classification.
1.2.1 Heaters. The heaters will be of the following types and classes, as specified (see 6.2):
Type I - U tube.
Type II - Straight tube, floating head.
Class 2 - 2 pass unit. Class 4 - 4 pass unit.
1.2.2 Rear end heads. The rear end heads will be of the following styles, as specified (see 6.2): Style a - Integral shell cover.
Style b - Externally sealed floating tubesheet.
Style c - Outside-packed floating head.
Style d - Floating head with backing device. Style e - Pull through floating head.
Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data which may improve this document should be sent to: Commanding Officer (Code 15E2), Naval Construction Battalion Center, 1000 23rd Avenue, Port Hueneme, CA 93043-4301, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
AMSC N/A FSC 4520
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