The following two types of hose assembly are specified.

– Type 1: Hose assemblies for flux and reflux, but not for insertion between the oil burner pump and the atomizing connection; maximum working pressure 1,0 MPa (10 bar); maximum oil temperature 100 °C.

– Type 2: Hose assemblies for insertion between the oil burner pump and the atomizing connection; maximum working pressure 4,0 MPa (40 bar); maximum oil temperature 100 °C.

The hose assemblies specified in this document are not intended to be used, without special assessment, for purposes other than oil burner installations.

It applies to automatic and semi-automatic valves which are:

—    normally closed;

—    used in combustion plants to interrupt the oil flow with or without delay on closing;

—    for use with oil types (e.g. middle distillate fuel oil, crude oil, heavy fuel oil or kerosene) without gasoline;

NOTE 1    For other oil types (e.g. oil emulsions), additional test methods can be agreed between the manufacturer and the test authority.

NOTE 2    Oil types from petroleum refining processes are classified ISO-F-D in ISO 8216-99 and form part of a device having other function(s), such as oil pumps. In this case, the test methods apply to those parts or components of the device forming the automatic and semi-automatic valves, i.e. those parts which are necessary for the closing function.

—    for use on burners or in appliances using oil;

—    directly or indirectly operated, electrically or by mechanical or hydraulic means;

—    fitted with or without closed-position indicator switches.

This document covers type testing only.

It applies to automatic and semi-automatic valves which are:

-normally closed;

-used in combustion plants to interrupt the oil flow with or without delay on closing;

-for use with oil types (e.g. middle distillate fuel oil, crude oil, heavy fuel oil or kerosene) without gasoline;

-for use on burners or in appliances using oil;

-directly or indirectly operated, electrically or by mechanical or hydraulic means;

-fitted with or without closed-position indicator switches.

ISO 23553-1:2014 covers type testing only.