EN 88-1:2011+A1:2016

European foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Units of measurement and test conditions
6 Construction requirements
7 Performance
8 EMC/Electrical requirements
9 Marking, installation and operating instructions
Annex A (informative) - Gas connections in common
        use in the various countries
Annex B (informative) - Leak-tightness test - volumetric
        method
Annex C (informative) - Leak-tightness test - pressure loss
        method
Annex D (normative) - Conversion of pressure loss into
        leakage rate
Annex E (normative) - Electrical/electronic component fault
        modes
Annex F (normative) - Additional requirements for safety
        accessories and pressure accessories as defined in
        EC Directive 97/23/EC
Annex G (normative) - Materials for pressurized parts
Annex H (informative) - - Additional materials for pressurized
         parts
Annex I (normative) - Requirements for controls used in DC
         supplied gas burners and gas burning appliances
Annex AA (informative) - Typical pressure regulators and
          pressure regulator parts
Annex BB (informative) - Overview of requirements and test
          conditions, and examples of performance curves for
          pressure regulators
Annex ZA (informative) - Relationship between this
         European Standard and the Essential Requirements
         of EC Directive 2009/142/EC relating to appliances
         burning gaseous fuels
Bibliography

This European Standard specifies the safety, construction and performance requirements for pressure regulators and pneumatic gas/air ratio pressure regulators (zero pressure regulators are included as a special type of pneumatic gas/air ratio pressure regulator), intended for use with gas burners, gas appliances and similar use, hereafter referred to as ‘pressure regulators’.This European Standard is applicable to-pressure regulators with declared maximum inlet pressures up to and including 50 kPa (500 mbar) of nominal connection sizes up to and including DN 250 for use with one or more fuel gases in accordance with EN 437,-pressure regulators which use auxiliary energy,-pneumatic gas/air ratio pressure regulators, which function by controlling a gas outlet pressure in response to an air signal pressure, air signal differential pressure, and/or to a furnace pressure signal (zero pressure regulators are included as a special type of pneumatic gas/air ratio pressure regulator),-gas/air ratio pressure regulators which change an air outlet pressure in response to a gas signal pressure or a gas signal differential pressure.This European Standard does not cover-pressure regulators connected directly to gas distribution network or to a container that maintains a standard distribution pressure,-pressure regulators intended for gas appliances to be installed in the open air and exposed to the environment,-mechanically linked gas/air ratio controls,-electronic gas/air ratio controls (EN 12067-2).