included with the "3D Piping Symbols Library v1.1"
Ball check (PVC)
Sizes 1/2" through 6"
Threaded & socketweld ends (Bronze)
Class 125
Sizes 1/4" through 3"
Swing check (Iron)
Class 125
Flanged ends
Sizes 2 1/2" through 24"
Swing check (Steel)
Class 150, 300 & 600
Buttweld & flanged ends
Sizes 2 1/2" through 24"
Tilting disc check (Steel)
Class 150, 300 & 600
Buttweld & flanged ends
Sizes 2 1/2" through 24"
Wafer check (Steel & iron)
Class 150, 400 & 600 (Steel)
Class 125 & 250 (Iron)
Sizes 2 1/2" through 48"