This one way aluminum check valve is used to allow flow in one direction but not the other. Aluminum One-Way Check Valve, 12mm Barbed Silver.
Weight clamp Ballast Mount 1-1/2 Aluminum ONE PAIR IMCA
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78-88 ALUMINUM ONE PIECE Heater / AC Cowl Firewall Delete Panel Plate with Drain
Black Aluminum One Piece AN-8 Swivel 90 Degree Hose End -8 AN Fitting
