Fluidsystem och delar: allmänt

This document provides procedures and methods for measuring and/or calculating the energy efficiency and associated characteristics of fans when driven by electric motors. This document deals with the following fan types; - axial fan; - centrifugal forward curved fan, centrifugal radial bladed fan; - centrifugal backward curved fan without housing, including centrifugal backward aerofoil fans; - centrifugal backward curved fan with housing, including centrifugal backward aerofoil fans; - mixed flow fan; - cross flow fan; - jet fan. It provides procedures and methods to evaluate the compliance of the fan efficiency against minimum efficiency requirements. This document includes stand-alone fans and fans that are integrated in other products. It gives guidance to manufacturers in providing information to surveillance authorities to describe the full extent of the fan by describing boundaries, significant elements and additional parts. Some units previously identified as fans are now defined as Uni-Directional Ventilation Units. This document explains and shows by way of examples the difference between fans and Uni-Directional Ventilation Units. This standard does not include: - Uni-Directional Ventilation Units; - fans that are designed specifically to operate in toxic, highly corrosive or flammable environments or in environments with abrasive substances, see Annex C.

 This document specifies the minimum values for expected strength as a function of time and temperature in the form of reference lines, for use in calculations on pipes made of:

a) polyethylene of raised temperature resistance (PE-RT) type I;

b) polyethylene of raised temperature resistance (PE-RT) type II; In Annex A, the procedure to demonstrate conformity to this standard is given and in Annex B, a guidance for designing piping components for relevant application classes.

This document specifies the required properties of the piping system and its components made from glass reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) intended to be used for drainage or sewerage without pressure including culverts.

It is the responsibility of the purchaser or specifier to make the appropriate selections taking into account their particular requirements and any relevant national regulations and installation practices or codes. This document is applicable to non-circular GRP-UP pipes, with flexible or rigid joints, primarily intended for use in buried installations but may also be used to reline existing non-circular pipe lines.

NOTE 1 GRP-UP includes pipes with vinyl ester liners or made entirely from vinyl ester.

NOTE 2 Piping systems conforming to this document can be used also for non-buried applications provided the influence of the environment, e.g. from UV-radiation, and the supports are considered in the design of the pipes, fittings and joints. This document is applicable to pipes, fittings and their joints of nominal sizes from DN 150 to DN 4000, which are intended to be used for the conveyance of surface water or sewage at temperatures up to 50 °C.

ISO 13347-4:2004 applies to industrial fans as defined in ISO 5801 and ISO 13349. It is limited to the determination of airborne sound emission for the specified set-ups. Vibration is not measured, nor is the sensitivity of airborne sound emission to vibration effects determined.

The sizes of the fan, which can be tested in accordance with ISO 13347-4:2004, are limited only by the practical aspects of the test installations.

ISO 13347-4:2004 determines sound power by using sound intensity measurements on a measurement surface which encloses the sound source. It provides guidelines on the acoustical environment, ambient noise, measurement surface, and number of measurements. The test set-ups are generally designed to represent the physical orientation of a fan installed in accordance with ISO 5801 and also used in ISO 13347-2.

This document specifies a selection of nominal pressures for hydraulic and pneumatic fluid power connectors and associated components.

NOTE There can be a need to provide a selection of nominal pressures for connectors and associated components used in applications where the external pressure on the components is greater than the internal pressure, for example vacuum service. A document that deals with this subject will be established in due course.

Specifies dimensions, performance requirements and test procedures for adjustable and non-adjustable light-duty (L series) stud ends and for their related O-rings, for general use and fluid power applications. Also specifies the designation of these stud ends.

ISO 17165-1:2007 specifies requirements for hose assemblies that are manufactured from hoses that conform to ISO 3949 and to all parts of ISO 1436, ISO 3862, ISO 4079 and ISO 11237 and hose fittings with elastomeric seals that conform to ISO 12151-1, ISO 12151-2, ISO 12151-3 and ISO 12151-6.

ISO 17165-1:2007 contains information of the most important criteria for the selection of preferred types of hoses and hose fittings with elastomeric sealing for use in hydraulic fluid power applications.

This document specifies a selection of nominal pressures for hydraulic and pneumatic fluid power connectors and associated components.

NOTE There can be a need to provide a selection of nominal pressures for connectors and associated components used in applications where the external pressure on the components is greater than the internal pressure, for example vacuum service. A document that deals with this subject will be established in due course.

Modifications to EN 14917:2021