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@Silk City Distillers that's a great link for small steam boilers. With respect to a tiny budget, the steam generator (think sauna heating) is very cheap. Unfortunately there's a world of difference in operation, safety and compliance requirements between the two. The boiler can run all day, needs to be installed by a certified individual, is a registered pressure vessel therefore costs more. The steam generator typically has a cut-off timer, for example it can only run for 60minutes continuously before it shuts down. Has a lower operating pressure, is not a registered pressure vessel. And an 18kW can be had for as little as $AU900 plus delivery and taxes. @kansftbmy real concern with your post is your bootstrapping budget, it can be done but a reality check is needed. Hoga have no idea about the requirements for hazardous area compliance in your region, that's your job. As such, I suspect hazardous area compliance will blow your budget before you get started. With that in mind, start your talks with your local Fire Marshall and regulatory authorities before committing any funds. You may find the exercise to be far more expensive than you ever anticipated. Cheers, Mech.

Datasheet for that pump says cast iron casing.

man that code stuff sucks. it is a biz killer