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

Size (inches): 1.5", 2", 2.5", 3" or 4"
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

1.5-PM1 N/A 1.5 in N/A 4.63 in N/A 4 in N/A 4.75 in N/A 5 in N/A 1.5 in N/A 0.5 in
2-PM1 N/A 2 in N/A 6.13 in N/A 5 in N/A 6.38 in N/A 6 in N/A 2 in N/A 0.5 in
2.5-PM1 N/A 2.5 in N/A 6.25 in N/A 5.5 in N/A 6.63 in N/A 7 in N/A 1.88 in N/A 0.5 in
3-PM1 N/A 3 in N/A 7.38 in N/A 6.5 in N/A 7.94 in N/A 7.5 in N/A 2 in N/A 0.5 in
4-PM1 N/A 4 in N/A 8.88 in N/A 8 in N/A 9.31 in N/A 9 in N/A 2.5 in N/A 0.5 in
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