Overview Product Description Buyers Products Pressure Protection Air Valve closes at 70 PSI to protect components. It features two 1/4 in. NPT ports. Product Videos Custom Field Shipping Free shipping on orders $100+ Product Reviews Write a Review Write a Review × Buyers Products Co. 6451005 - Pressure Protection Air Valve Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *