Edelbrock #78003 is a combination water separator and air pressure regulator built into one. This unit is sold as an accessory to our nitrous refill pump stations. The purpose of this unit is to prevent water from entering the nitrous pump and damaging the pumps internals as well as to regulate the air pressure operating the pump to the correct PSI. This is an item that aids in preventing costly water damage to customer's nitrous pumps as well as keep the pressure operating the pump at the correct level.
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