Standard/Optional Features

520R
530R
Feature
Std
Opt
Std
Opt
Pattern
Straight
X
X
OS&Y
OS&Y  
X
X
Gage Connection
Union 1/2" NPTF
X
  1/2" NPTM
X
  3/4" NPTF
X
  3/4" NPTM
X
Rigid 1/2" NPTF
X
  3/4" NPTF
X
Socketweld 1/2" Female
X
  1/2" Male
X
  3/4" Male
X
  3/4" Female
X
Flanged  
X
Spherical Union 1/2" NPTF
X
  1/2"NPTM
X
  3/4" NPTM
X
Vessel Connection
Solid Shank 1/2" NPTM
X
X
  3/4" NPTM
X
X
  1" NPTM
X
X
Socketweld 1/2" Male
X
X
  3/4" Male
X
X
  1" Male
X
X
Flanged  
X
X
Vent/Drain Connection
1/2" NPTF
X
X
3/4" NPTF
X
X
Ball Check Shutoff
Horizontal Lower and Upper Valves
X
X
Omitted*
X
X
Seat
Threaded (Renewable)
X
X
Backseating stem
X
X
Handwheel
w/ Standard Pitch Threads
X
X
w/ Quick Closing Threads (1/4 turn)
X
X
*Acceptable for ASME Service