Piping Study

  • Home
  • Blog
  • Feedback
  • Disclaimer
  • PipingStudy Forum
  • tree
  • Valve
  • Selection Of Valve
  • Pressure Temperature Rating
  • Rigging and Lifting Plan
  • Gate Valve
  • Stainless Steel Pipe naming in different standards
 
Button  Material Table

Trim Number

Removable/replaceable ,functional parts of the valve that are exposed to the flow medium such as stem,closure member and seating surfaces is termed as trim.(Valve body,bonnet,yoke does not include in trim)
The number corresponding to material used in API 600 and API 602 are termed as Trim Numbers

Commonly used Trim Numbers for Valves 

TRIMMATERIALSEATDISCBACKSEATSTEMNOTES
1410410410410410 
2304304304304304 
3F310310310310310 
4Hard 410Hard 410Hard 410410410seats 750BHN Min.
5HardfacedStelliteStellite410410 
5AHardfacedNi-CrNi-Cr410410 
6410 and Cu-NiCu-Ni410410410 
7410 and Hard 410Hard 410Hard 410410410seats 750BHN Min.
8410 and HardfacedStellite410410410 
8A410 and HardfacedNi-Cr410410410 
9MonelMonelMonelMonelMonel 
10316316316316316 
11Monel and HardfacedStelliteMonelMonelMonel 
12316 and HardfacedStellite316316316 
13Alloy 20Alloy 20Alloy 20Alloy 20Alloy 20 
14Alloy 20 and HardfacedStelliteAlloy 20Alloy 20Alloy 20 
15304 and HardfacedStelliteStellite304304 
16316 and HardfacedStelliteStellite316316 
17347 and HardfacedStelliteStellite3473477 
18Alloy 20 and HardfacedStelliteStellite  
Powered by Create your own unique website with customizable templates.