Overview Reviews Product Description Open Operating PSI: 65 ± 8Close Operating PSI: 56 ± 8Inlet Port: 1/4" NPTOutlet Port: 1/4" NPTAccessory Port B: 1/4 - 18 ThreadAccessory Port C: 1/8 - 27 ThreadOEM Part Number: N15759DC Used to protect the air brake system from accessory failure Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × RVKN31000 - Pressure Protection Valve Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments