Skip to main content
Back

EVS-EN ISO 14903:2017

Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO 14903:2017)

General information

Valid from 16.08.2017
Base Documents
ISO 14903:2017; EN ISO 14903:2017
Directives or regulations
None

Standard history

Status
Date
Type
Name
Main
prEN ISO 14903
16.08.2017
Main
02.06.2011
Main
ISO 14903:2017 provides the qualification procedure for type approval of the tightness of hermetically sealed and closed components, joints and parts used in refrigerating systems and heat pumps as described in relevant parts of ISO 5149. The sealed and closed components, joints and parts concerned are, in particular, fittings, bursting discs, flanged or fitted assemblies. The tightness of flexible piping made from non-metallic materials is dealt with in ISO 13971. Metal flexible piping are covered by this document.
The requirements contained in this document are applicable to joints of maximum DN 50 and components of internal volume of maximum 5 l and maximum weight of 50 kg.
ISO 14903:2017 is intended to characterize their tightness stresses met during their operations, following the fitting procedure specified by the manufacturer, and to specify the minimal list of necessary information to be provided by the supplier of a component to the person in charge of carrying out this procedure.
It specifies the level of tightness of the component, as a whole, and its assembly as specified by its manufacturer.
It applies to the hermetically sealed and closed components, joints and parts used in the refrigerating installations, including those with seals, whatever their material and their design are.
ISO 14903:2017 specifies additional requirements for mechanical joints that can be recognized as hermetically sealed joints.

Required fields are indicated with *

*
*
*
PDF
26.84 € incl tax
Paper
26.84 € incl tax
Browse standard from 2.44 € incl tax
Standard monitoring

Customers who bought this item also bought

Main

EVS-EN 1127-1:2019

Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology (corrected version 09.2019)
Newest version Valid from 02.09.2019
Main

EVS-EN 14276-2:2020

Pressure equipment for refrigerating systems and heat pumps - Part 2: Piping - General requirements
Newest version Valid from 19.03.2020
Main + amendment

EVS-EN 378-1:2016+A1:2021

Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1: Basic requirements, definitions, classification and selection criteria
Newest version Valid from 01.02.2021
Main + amendment

EVS-EN 378-3:2016+A1:2021

Refrigerating systems and heat pumps - Safety and environmental requirements - Part 3: Installation site and personal protection
Newest version Valid from 01.02.2021