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P490.20
Single stage low pressure regulators for Liquefied Petroleum Gas (LPG) — Specification
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This standard specifies performance, safety and constructional requirements for low-pressure regulators of the single stage type intended for use with liquefied petroleum gas mixtures in the vapour phase and designed for a set outlet pressure of 2.8 kPa and a flow not exceeding 10kg/h. Unless otherwise stated, all pressures given in the standard are gauge pressures.