Low pressure boilers vs. High pressure boilers

Mike_NYH

Can you operate a low pressure steam boiler thats rated for 15 PSI @ 10-12 PSI 6-7 hous per day 7 days a week? Or if your running at such high pressures for long periods at a time would it be considered high pressure steam and would u need a high pressure boiler such as a Fulton or Columbia boiler?

For example: Peerless ECT series running at 10-12 PSI all day long to supply steam for a rotary cooker in an industrial manufacturer.