ISO/DIS 6704

Automatic steam traps — Classification

General information

Current stage: 40.20 Effective date: Jun 15, 2026

Originator: ISO

Owner: ISO/TC 153

Type: International Standard

Scope

Establishes a simple classification of the main types according to the mode of actuation of their obturation device and disregarding their details of conception and construction. Three categories of steam traps can be distinguished: mechanical traps, actuated by the level of condensate; thermostatic traps, actuated by the temperature of the condensate; thermodynamic traps, actuated by fluid dynamics.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 6704:1982

NOW

IN_DEVELOPMENT
ISO/DIS 6704
40.20 DIS ballot initiated: 12 weeks
Jun 15, 2026

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