BPV-31 bullet piercing tap valve; Replace part Number: AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31. You only need a hex key wrench (included) to install this part; Its compact design only requires a 2 inch clearance area for installation and use. The BPV-31 bullet piercing tap valve made of corrosion-resistant metal that won' t wear out or rust over time, a convenient replacement part for you to use. Premium Quality: Brand New & High-Quality parts. The BPV-31 bullet piercing tap valve made of corrosion-resistant metal that won' t wear out or rust over time, a convenient replacement part for you to use. .