One-way 'smart' valves take a tip from nature. The plumbing masterpiece that is the human body is the inspiration for a tiny new 'smart' valve, just a millimetre and a half across. Like the check ...

For the past 15 years, pilot-operated safety relief valves (POSRVs) have effectively and reliably protected economizers on Section I power boilers in overpressure situations, working in tandem with ...