Boston Valve Gallery Description It is a "Boston"-type valve and may fit many types of inflatables. Open the top cap to inflate (inflation hole is 11/16-inch in diameter). Valve is one-way. To deflate, remove valve from tube.Will not work on Zodiac Inflatables. (different thread) Quantity: $19.95 Add to cart Buyers’ reviews (0) Write your review No reviews. Be the first to write one!