Packless Vibration Absorber - Brass Breadcrumb Home / Products / Parts / Valves and Valve Accessories / Packless Vibration Absorbers Loading... Customer Part Number: PAC-VAF-83 Brand: Packless Industries Burst Pressure (PSI): 1700 Inside Diameter (In.): 2-1/2 Outside Diameter (In.): 2-5/8 Working Pressure (PSI): 340