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23 Fluid systems and components for general use
New standards
EVS-EN 12693:2026
Refrigerating systems and heat pumps - Safety and environmental requirements - Positive displacement refrigerant compressors
Scope: This document is applicable to positive displacement refrigerant compressors for stationary and mobile refrigerating systems and heat pumps, hereafter called compressors.
It is applicable for compressors used in commercial and industrial appliances and with electrical energy supply including integral motors, up to 1 000 VAC and 1 500 VDC.
It is applicable to open drive, semi hermetic and hermetic motor compressors, which contain a positive compression function.
This document is not applicable to:
- compressors used in household appliance for which EN IEC 60335-2-34 applies;
- compressors using water or air as refrigerant;
- compressors in vehicle air conditioning systems covered by a specific product standard, e.g. ISO 13043.
This document does not deal with requirements for emission of noise.
NOTE 1 Compressors for automotive comfort air conditioning systems can be developed according e.g. SAE J 639.
NOTE 2 Noise emission depends on the complete installation of the built-in compressors and the corresponding operating conditions.
For semi-hermetic and open drive compressors which include moving parts and for which the external envelope is primarily designed for mechanical loads, thermal loads (to limit the possible deformation due to temperature), stiffness of the structure (external mechanical loads and weight of the equipment), taking into account established safe industrial practice, it is considered that pressure is not a significant design factor.
Attached parts covering other functions e.g. oil separators, oil coolers, suction accumulators comply to EN 14276-1 or EN 13445-6 (cast iron) or EN 13445-8 (aluminium) or show compliance to the relevant European requirements. This is applicable also to shells for hermetic compressors either welded or with any kind of permanent joint.
Requirements for compressors used in explosive atmospheres are not covered by this document.
NOTE 3 For further guidance see EN 1127-1.
This document deals with significant hazards, hazardous situations and events relevant to compressors, when they are used as intended and under conditions for misuse which are reasonably foreseeable by the manufacturer (see Clause 4).
This document specifies safety requirements for the design, construction, manufacture and testing, documentation and marking of compressors, including integral accessories, e.g. shut-off valve, if necessary.
This document relates to the compressor itself which is to be incorporated in a refrigerating system.
This document is not applicable to compressors as specified in the scope which are manufactured before the date of publication.
It is applicable for compressors used in commercial and industrial appliances and with electrical energy supply including integral motors, up to 1 000 VAC and 1 500 VDC.
It is applicable to open drive, semi hermetic and hermetic motor compressors, which contain a positive compression function.
This document is not applicable to:
- compressors used in household appliance for which EN IEC 60335-2-34 applies;
- compressors using water or air as refrigerant;
- compressors in vehicle air conditioning systems covered by a specific product standard, e.g. ISO 13043.
This document does not deal with requirements for emission of noise.
NOTE 1 Compressors for automotive comfort air conditioning systems can be developed according e.g. SAE J 639.
NOTE 2 Noise emission depends on the complete installation of the built-in compressors and the corresponding operating conditions.
For semi-hermetic and open drive compressors which include moving parts and for which the external envelope is primarily designed for mechanical loads, thermal loads (to limit the possible deformation due to temperature), stiffness of the structure (external mechanical loads and weight of the equipment), taking into account established safe industrial practice, it is considered that pressure is not a significant design factor.
Attached parts covering other functions e.g. oil separators, oil coolers, suction accumulators comply to EN 14276-1 or EN 13445-6 (cast iron) or EN 13445-8 (aluminium) or show compliance to the relevant European requirements. This is applicable also to shells for hermetic compressors either welded or with any kind of permanent joint.
Requirements for compressors used in explosive atmospheres are not covered by this document.
NOTE 3 For further guidance see EN 1127-1.
This document deals with significant hazards, hazardous situations and events relevant to compressors, when they are used as intended and under conditions for misuse which are reasonably foreseeable by the manufacturer (see Clause 4).
This document specifies safety requirements for the design, construction, manufacture and testing, documentation and marking of compressors, including integral accessories, e.g. shut-off valve, if necessary.
This document relates to the compressor itself which is to be incorporated in a refrigerating system.
This document is not applicable to compressors as specified in the scope which are manufactured before the date of publication.
Base documents: EN 12693:2026
Replaces: EVS-EN 12693:2008
ISO 24131-4:2026
Internal protection by polymeric lining for ductile iron pipes — Requirements and test methods — Part 4: Ceramic epoxy lining
Scope: This document specifies the requirements and test methods applicable to factory applied ceramic epoxy lining for ductile iron pipes conforming to ISO 2531, ISO 7186 and ISO 16631, excluding potable water, for operating temperature up to 50 °C.
Base documents:
ISO 3669:2026
Vacuum technology — Dimensions of knife-edge flanges
Scope: This document specifies the dimensions of fixed or rotatable bolted knife-edge flanges used in vacuum systems for pressures ranging from atmospheric to as low as 10−11 Pa.
Base documents:
Replaces: ISO 3669:2020
Replaced standards
EVS-EN 12693:2008
Refrigerating systems and heat pumps - Safety and environmental requirements - Positive displacement refrigerant compressors
Scope: This standard applies to positive displacement refrigerant compressors for stationary and mobile refrigerating systems and heat pumps defined in 3.1, hereafter called compressors. It applies for compressors used in commercial and industrial appliances and with electrical energy supply including integral motors, up to 1 000 VAC and 1 500 VDC. It applies to open drive, semi hermetic and hermetic motor compressors, which contain a positive compression function. This standard is not applicable to: - compressors used in household appliance for which EN 60335-2-34 applies; - compressors using water or air as refrigerant. This standard does not deal with requirements for vibration and noise.
Base documents: EN 12693:2008
Replaced: EVS-EN 12693:2026
ISO 3669:2020
Vacuum technology -- Dimensions of knife-edge flanges (Corrected version 2020-05)
Scope: This document specifies the dimensions of fixed or rotatable bolted knife-edge flanges used in vacuum systems for pressures ranging from atmospheric to as low as 10-11 Pa.
Base documents:
Replaced: ISO 3669:2026
Drafts
prEN ISO 6704
Automatic steam traps - Classification (ISO/DIS 6704:2026)
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.
Base documents: ISO/DIS 6704; prEN ISO 6704
prEN 13611
Safety and control devices for burners and appliances burning gaseous fuels - General requirements
Scope: This document specifies the general safety, design, construction, and performance requirements and testing of safety, control or regulating devices (hereafter referred to as controls) for burners and appliances burning one or more gaseous fuels or liquid fuels.
This document is applicable to controls with declared maximum inlet pressure up to and including 500 kPa and of nominal connection sizes up to and including DN 250.
This document is applicable to controls with declared maximum inlet pressure up to and including 500 kPa and of nominal connection sizes up to and including DN 250.
Base documents: prEN 13611
prEN 13076
Devices to prevent pollution by backflow of potable water - Unrestricted air gap-Family A - Type A
Scope: This document specifies the characteristics and the requirements of unrestricted air gap Family A, Type A for nominal flow velocity not exceeding 3 m/s. Air gaps are devices for protection of potable water in water installations from pollution by backflow. This document applies to air gaps in factory-assembled products and to constructed air gaps in situ and specifies requirements and methods to verify and ensure compliance with this document during normal working use.
The fluid in the receiving vessel is assumed to have similar properties to the water supply. Where this is not the case, additional care or tests could be required to verify the efficacy of the solution in practical use.
The AA device is intended to be used in potable water installations according to EN 806 (series).
Sanitary tapware when installed onto a receiving vessel (e.g. washbasin etc.) might have some restriction of its overflow. This will not compromise the water supply as the tapware might have an air gap, as detailed for example in EN 200 (dimension E), that provides an air gap disconnection. If this is the case, then backflow protection will be assumed to be adequate, and no further testing/verification will be needed.
The fluid in the receiving vessel is assumed to have similar properties to the water supply. Where this is not the case, additional care or tests could be required to verify the efficacy of the solution in practical use.
The AA device is intended to be used in potable water installations according to EN 806 (series).
Sanitary tapware when installed onto a receiving vessel (e.g. washbasin etc.) might have some restriction of its overflow. This will not compromise the water supply as the tapware might have an air gap, as detailed for example in EN 200 (dimension E), that provides an air gap disconnection. If this is the case, then backflow protection will be assumed to be adequate, and no further testing/verification will be needed.
Base documents: prEN 13076
prEN IEC 63086-1:2026
Household and similar electrical air cleaning appliances - Methods for measuring the performance - Part 1: General requirements
Scope: This part of IEC 63086 applies to electrically powered household and similar air cleaners having a rated input voltage
– up to and including 250 V for single-phase AC circuits;
– up to and including 480 V line-to-line for three-phase AC circuits;
– up to and including 48 V for DC circuits.
For combination products, this document is to be used to measure the performance of the appliance at reducing the test pollutants .
This document is not applicable to:
– appliances intended exclusively for industrial purposes;
– appliances intended for use in medical treatment locations, such as surgical suites, laboratories, medical treatment rooms;
– cooking fume extractors (see IEC 61591 [1]).
NOTE 1 See Clause 4 for examples of different technologies and placements of household and similar air cleaners.
NOTE 2 Battery-operated appliances are within the scope of this document. Dual-supply appliances, either mains supplied or battery-operated, are regarded as battery-operated appliances when operated in the battery mode.
NOTE 3 A cooking fume extractor and an air cleaner differ significantly in their main use. A cooking fume extractor is designed to capture fumes close to the cooking surface in a kitchen environment. In the case of the cooking fume extractor, the focus is on the direct capture of the cooking fumes (first yield capture rate), whereas in the case of air cleaners, the focus is on general household air pollutant reduction.
– up to and including 250 V for single-phase AC circuits;
– up to and including 480 V line-to-line for three-phase AC circuits;
– up to and including 48 V for DC circuits.
For combination products, this document is to be used to measure the performance of the appliance at reducing the test pollutants .
This document is not applicable to:
– appliances intended exclusively for industrial purposes;
– appliances intended for use in medical treatment locations, such as surgical suites, laboratories, medical treatment rooms;
– cooking fume extractors (see IEC 61591 [1]).
NOTE 1 See Clause 4 for examples of different technologies and placements of household and similar air cleaners.
NOTE 2 Battery-operated appliances are within the scope of this document. Dual-supply appliances, either mains supplied or battery-operated, are regarded as battery-operated appliances when operated in the battery mode.
NOTE 3 A cooking fume extractor and an air cleaner differ significantly in their main use. A cooking fume extractor is designed to capture fumes close to the cooking surface in a kitchen environment. In the case of the cooking fume extractor, the focus is on the direct capture of the cooking fumes (first yield capture rate), whereas in the case of air cleaners, the focus is on general household air pollutant reduction.
Base documents: 59N/97/CDV; prEN IEC 63086-1:2026