3. Subject to regulations 4, 5, and 6, these Regulations apply to pressure equipment and assemblies with a maximum allowable pressure PS greater than 0.5 bar.
4.—(1) These Regulations shall not apply to the products listed in Schedule 1.
(2) For the avoidance of doubt these Regulations shall not apply to the assembly of pressure equipment on the site and under the responsibility of the user.
5. These Regulations shall not apply to pressure equipment and assemblies placed on the market before 29th November 1999.
6.—(1) Subject to paragraph (2), these Regulations shall not apply to pressure equipment and assemblies placed on the market on or before 29th May 2002 which comply with any safety provisions with which they would have been required to comply for them to be placed on the market in the United Kingdom on 28th November 1999.
(2) The exclusion provided in paragraph (1) shall not apply in the case of pressure equipment or an assembly which—
(a)unless required to bear the CE marking pursuant to any other [F1EU ] obligation, bears the CE marking or an inscription liable to be confused with it; or
(b)bears or is accompanied by any other indication, howsoever expressed, that it complies with the Pressure Equipment Directive.