ITEM NAME:1 Set Piercing Valve Kits for AP4502525 BPV31D GPV14 GPV31 GPV38 GPV56 MPV31 Product Description Feature: Good quality and easy to install. Cleaning off the copper pipe with a wire brush or abrasive cloth. Attach it to the smoothest part of the copper tube to ensure tight sealing. The sealing area of the valve is 50 times that of the O-ring. In addition, its sealing force is 180 inch lbs, pressure test at 250 ℉, and torque tested with 500 lbs. Corrosion resistant. Specification: Material: metal Quantity: 2pcs Color: sliver Replace part No.: AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31. Compatible with 1/4 inch, 5/16 inch, 3/8 inch outside diameter pipes. Package included: 2 x BPV-31 bullet piercing tap valve kits Warm notice: 1. It is not suitable for refrigerant 410a. 2. Put on your safety glasses and protective gloves before piercing the pipe. 3. This is not the original product, the mention of brand names and any related model designation above is only for purposes of demonstrating compatibility. If you have any uncertainty or feel confused about the item, please feel free to.Replace part No.: AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31. 2 x BPV-31 bullet piercing tap valve kits. Put on your safety glasses and protective gloves before piercing the pipe. Attach it to the smoothest part of the copper tube to ensure tight sealing.