Nitrous Outlet 180 Degree Aluminum Pressure Relief Tube - Black 8AN B-Nut

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180° Bend 8AN Threads NHRA Approved Required At NHRA Track Events Evacuates Nitrous From Cockpit NHRA Approved NHRA regulations require that any nitrous bottle mounted inside the c ockpit (including the trunk) of a vehicle to have a blow down tube to evacuate the nitrous out of the vehicle. This blow down tube meets all NHRA specifications. Application This blow down tube connects to the NHRA fitting on the bottle valve. If the bottle pressure reaches 3000 PSI the cap inside of the NHRA fitting opens to relieve the bottle pressure. This tube is used to route the nitrous out of the vehicle. Show more