Face to Face Dimensions Dual Plate
Double-flanged Check Valves API Std 594 Class 150-2500 Type A

General notes..

• Dimensions are in millimeters unless otherwise indicated.
• The face-to-face tolerance shall be as specified in ASME B16.10 for sizes
  through NPS 24 and shall be 3 mm for sizes larger than NPS 24.
• Flange faces with ring-joint grooves shall conform to the dimensions
  shown in either ASME B16.5 or ASME B16.47, as applicable.

Notes..

• Double-flanged valves shall only be supplied where nut space between flanges is adequate.
• Unless otherwise specified in the purchase order, the bolt holes will be through-drilled.