Posted on April 29, 2018May 1, 2018 by Pulse AssentISO 23551-4:2018 Safety and control devices for gas burners and gas-burning appliances. Particular requirements Valve-proving systems for automatic shut-off valves Link: ISO 23551-4:2018 Safety and control devices for gas burners and gas-burning appliances. Particular requirements Valve-proving systems for automatic shut-off valves Source: BSI Standards Related Posts:New laws to introduce digital labelling for…UK government sets out AI Safety Summit ambitionsGovernment puts business first with Brexit…Burdensome legislation withdrawn in latest move to…Small businesses benefitting more than ever from…