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Sakthitharan
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Join Date: Aug 2011
Posts: 16

Trim Parts in Valves

09/12/2011 10:06 AM

In Industrial valves Trim material is used.

We used to say that intersecting parts are Trim,If so Seat and Disc ok, shaft and Bonnet Bush Ok,where as Shaft intersects with Wedge or Disc- In that mating area why there is no same material construction and why we call shaft or Spindle also as TRIM material.

In which standard it is mentioned that Spindle as TRIM.
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Rorschach
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#1

Re: Trim Parts in Valves

09/12/2011 5:27 PM

trim in this context is any part that comes in contact with the fluid. depending on the valve design the shaft may or may not come in contact with the fluid.

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Sakthitharan
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Join Date: Aug 2011
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#2
In reply to #1

Re: Trim Parts in Valves

09/12/2011 5:50 PM

It means that the Wetted parts are known as Trim. Is it mentioned in any standard?
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Rorschach
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#3
In reply to #2

Re: Trim Parts in Valves

09/12/2011 6:05 PM

try API 6A. there may be others (and probably are.) but that is the one that dominates in my industry.

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