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Popular Mechanics Boiler
vtsteam:
I drilled a recess of 3/16" then added a bevel out to the edge of the valve seat plug. These two steps will help guide the 3/16" stainless steel ball to the 1/8" valve seat at the center.
vtsteam:
This is a better view of it:
And with the ball in place:
vtsteam:
Then I silver brazed the valve seat plug into the pipe nipple:
vtsteam:
With the ball in place I formed the valve seat to the ball with a light tap on a drift.
vtsteam:
With the valve body and seat done, I started on a plunger to take the spring pressure and push the ball into the seat. I decided to use 1/8" brazing rod as the stem. Here I'm turning the plunger end:
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