Product Item: ASTM A105 Swing Check Valves
Type: Swing Check Valve
Body Material: ASTM A105
Size: 4 Inch, DN100
Pressure Rating: Class 300 LB, PN50
End Connection: Flanged
Surface Treatment: Blackening
Source: https://www.landeevalve.com/carbon-steel-swing-check-valve-a105-4-in-cl300-flanged.html