Air adjusting valve, 1/4" NPS w/ gauge PART NUMBER: CA HAV-501 $61.14 iWeb Price Quantity discounts available QuantityPrice (0)No Reviews yet Quantity -+ Add to Cart Details The HAV-501 air adjustment valve attaches to the spray gun inlet, allowing the operator to control pressure at the gun. The HAV-501 includes an air gu... Details Back Details The HAV-501 air adjustment valve attaches to the spray gun inlet, allowing the operator to control pressure at the gun. The HAV-501 includes an air guage. The swivel top allows fast, easy installation. For use with all professional spray guns. Ratings & ReviewsNo reviews availableBe the first to Write a Review