2" Trailer Relief Valves SKU: 2" Trailer Relief Valves Availability: Out of stock Notify me when available Product tags BTI Dixon Available Options 0 options All variants are listed below. Specification filters require JavaScript. This product is sold out Description Specifications 2" Trailer Relief Valves Parts Brand BTI, Dixon NPT Option Cam & Groove, Female, Male PSI 15, 18, 20, 25