Overview Product Description 1 1/2" Small Inline Check Valve (1 1/2" duckbill). Product Videos Custom Field Product Reviews Write a Review Write a Review × Dometic/Sealand Dometic/Sealand | Small Inline Check Valve | 308238696 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments