Carefully look at the configuration of the valve. Then look at "normal" radiator steam valves angle pattern.
Normally steam valves are globe pattern thus the body is wider to allow for the large disc so it can be throttled.
The H/W valve has a metal cylinder type inside so it would be impossible to shut the supply off completely to prevent freeze ups as there would always be some type of circulation
I was a Stationary engineer and replaced literately thousands of steam and hydronic valves.
I wish more posters of questions would give more information to make life easier. |
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