The Inverted Vent Check Valves PM1 Series prevents seawater from entering tanks while allowing air/vapor to escape when tank is filling.

Size (inches): 5", 6", 8", 10" or 12"
Material: Aluminum 535, Bronze B62, Galvanized Steel or Stainless Steel 316
Connections: Flanged, Socket Weld, Threaded (FNPT) or Butt Weld
Float Options: Stainless Steel 316 (standard), Polyethylene, Monel* or Copper*
Closing Device Material: Stainless Steel 316 (optional)

*By request only

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Item #

Pipe Size: A

Dim: B

Dim: C

Dim: D

Dim: E

Dim: F

Dim: G

Standard Size A

Dim: A

5-PM1-A-F N/A 5 in N/A 5 in N/A 7.75 in N/A 10.13 in N/A 8.25 in N/A 10 in N/A 3.5 N/A N/A
6-PM1-A-F N/A 6 in N/A 6 in N/A 8.5 in N/A 11.13 in N/A 9 in N/A 11 N/A 3.5 N/A N/A
8-PM1-A-F N/A 8 in N/A 8 in N/A 10 in N/A 14.13 in N/A 10.75 in N/A 13.5 N/A 3.5 N/A N/A
10-PM1-A-F N/A 10 in N/A 10 in N/A 12.5 in N/A 17 in N/A 13.25 in N/A 16 N/A 4.25 N/A N/A
12-PM1-A-F N/A 12 in N/A 12 in N/A 14.5 in N/A 21 in N/A 15.75 in N/A 19 N/A 5 N/A N/A
5-PM1-A-F-P N/A 5 in N/A 5 in N/A 7.75 in N/A 10.13 in N/A 8.25 in N/A 10 N/A 3.5 N/A N/A
6-PM1-A-F-P N/A 6 in N/A 6 in N/A 8.5 in N/A 11.13 in N/A 9 in N/A 11 N/A 3.5 N/A N/A
8-PM1-A-F-P N/A 8 in N/A 8 in N/A 10 in N/A 14.13 in N/A 10.75 in N/A 13.5 N/A 3.5 N/A N/A
10-PM1-A-F-P N/A 10 in N/A 10 in N/A 12.5 in N/A 17 in N/A 13.25 in N/A 16 N/A 4.25 N/A N/A
12-PM1-A-F-P N/A 12 in N/A 12 in N/A 14.5 in N/A 21 in N/A 15.75 in N/A 19 N/A 5 N/A N/A
5-PM1-A-F-P-C N/A 5 in N/A 5 in N/A 7.75 in N/A 10.13 in N/A 8.25 in N/A 10 N/A 3.5 N/A N/A
6-PM1-A-F-P-C N/A 6 in N/A 6 in N/A 8.5 in N/A 11.13 in N/A 9 in N/A 11 N/A 3.5 N/A N/A
8-PM1-A-F-P-C N/A 8 in N/A 8 in N/A 10 in N/A 14.13 in N/A 10.75 in N/A 13.5 N/A 3.5 N/A N/A
10-PM1-A-F-P-C N/A 10 in N/A 10 in N/A 12.5 in N/A 17 in N/A 13.25 in N/A 16 N/A 4.25 N/A N/A
12-PM1-A-F-P-C N/A 12 in N/A 12 in N/A 14.5 in N/A 21 in N/A 15.75 in N/A 19 N/A 5 N/A N/A
5-PM1-A-F-C N/A 5 in N/A 5 in N/A 7.75 in N/A 10.13 in N/A 8.25 in N/A 10 N/A 3.5 N/A N/A
6-PM1-A-F-C N/A 6 in N/A 6 in N/A 8.5 in N/A 11.13 in N/A 9 in N/A 11 N/A 3.5 N/A N/A
8-PM1-A-F-C N/A 8 in N/A 8 in N/A 10 in N/A 14.13 in N/A 10.75 in N/A 13.5 N/A 3.5 N/A N/A
10-PM1-A-F-C N/A 10 in N/A 10 in N/A 12.5 in N/A 17 in N/A 13.25 in N/A 16 N/A 4.25 N/A N/A
12-PM1-A-F-C N/A 12 in N/A 12 in N/A 14.5 in N/A 21 in N/A 15.75 in N/A 19 N/A 5 N/A N/A
5-PM1-A-S N/A 5 in N/A 5 in N/A 7.75 in N/A 10.13 in N/A 8.25 in N/A 10 N/A 3.5 N/A N/A
6-PM1-A-S N/A 6 in N/A 6 in N/A 8.5 in N/A 11.13 in N/A 9 in N/A 11 N/A 3.5 N/A N/A
8-PM1-A-S N/A 8 in N/A 8 in N/A 10 in N/A 14.13 in N/A 10.75 in N/A 13.5 N/A 3.5 N/A N/A
5-PM1-A-S-P N/A 5 in N/A 5 in N/A 7.75 in N/A 10.13 in N/A 8.25 in N/A 10 N/A 3.5 N/A N/A
6-PM1-A-S-P N/A 6 in N/A 6 in N/A 8.5 in N/A 11.13 in N/A 9 in N/A 11 N/A 3.5 N/A N/A
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