What is the pressure range for low pressure steam and the applications of low pressure steam?

Answer 1

What is considered low pressure steam varies from industry to industry. So I don't see how you can expect an answer to this.

Answer 2

In industrial applications, 50 psi steam is considered low pressure.
However in restaurants, laundromats, residences, etc., low pressure steam is anywhere from 5 to 20 psig

Answer 3

Low pressure steam is used for domestic hot water and secondary hot water in commercial buildings. I manage 2.2 million SF of office space and all of our water heaters and space heating is done with 5 psi steam.