Posted by Harold Kestenholz - Hydronic Network on April 29, 2001 at 14:59:08:
In Reply to: high pressure blackseal test in NJ posted by Danny on April 29, 2001 at 11:21:33:
The answers are in the booklet from the Mechanical Inspection Bureau. County colleges also hold classes for operators. As you require the signature of an operating engineer, you might ask them for more instruction.