Charging connections
8.—(1) A connection for charging a gas container shall be outside the vehicle and in the case of a public service vehicle the connection shall not be within 610mm of an entrance or exit.
(2) An efficient shut-off valve shall be fitted as near as practicable to the filling point but where compressed gas is not used a cock or an efficient non-return valve may be fitted instead.
(3) Where compressed gas is used an additional emergency shut-off valve shall be fitted adjacent to the valve referred to in sub-paragraph (2).
(4) A cap shall be fitted to the gas filling point on the vehicle and where compressed gas is used this cap shall be made of steel with a metal to metal joint.