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NBN ISO 23551-4:2021
Safety and control devices for gas burners and gas-burning appliances — Particular requirements — Part 4: Valve-proving systems for automatic shut-off valves
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Summary
This document specifies safety, constructional and performance requirements of valve-proving
systems (VPS), intended for use with gas burners and gas-burning appliances. It also describes the test
procedures for checking compliance with these requirements and provides information necessary for
the purchaser and user.
This document is applicable to all types of VPS which are used for the automatic detection of leakage in
a gas burner section having at least two valves designed in accordance with ISO 23551-1 and which give
a signal if the leakage of one of the valves exceeds the detection limit.
This document is applicable to VPS with a maximum working pressure up to and including 500 kPa for
use in systems using fuel gases.
This document is not applicable to VPSs for use in explosive atmospheres.
NOTE Provisions for production control are not part of the ISO 23551 series.
systems (VPS), intended for use with gas burners and gas-burning appliances. It also describes the test
procedures for checking compliance with these requirements and provides information necessary for
the purchaser and user.
This document is applicable to all types of VPS which are used for the automatic detection of leakage in
a gas burner section having at least two valves designed in accordance with ISO 23551-1 and which give
a signal if the leakage of one of the valves exceeds the detection limit.
This document is applicable to VPS with a maximum working pressure up to and including 500 kPa for
use in systems using fuel gases.
This document is not applicable to VPSs for use in explosive atmospheres.
NOTE Provisions for production control are not part of the ISO 23551 series.
Technical characteristics
| Publisher | Bureau de Normalisation Belge (NBN) |
| Publication Date | 06/09/2021 |
| Page Count | 6 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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