Npt Cast
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What does it mean when a pressure gauge requires a bronze bushed movement?
I have a specification for a water pipe pressure gauge that reads as follows:
Minimum 4-1/2" diameter die cast aluminum case, glass or acrylic plastic window, phosphor bronze bourdon tube with BRONZE BUSHED MOVEMENT, recalibration from front of gauge dial and 1/4" NPT forged brass socket.
Can you try to explain the concept of what bushed movement means? Like layman's terms?
All of the pivot or rotating points are a bronze bushing. It is a very common method manufacture for quality pressure gages.
The bushings are very similar in principal to the jewels provided as bearings for quality mechanical watches.
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