Packless Vibration Absorber - Brass Breadcrumb Home / Products / Parts / Valves and Valve Accessories / Packless Vibration Absorbers Loading... Customer Part Number: PAC-VAF-11 Brand: Packless Industries Burst Pressure (PSI): 2500 Inside Diameter (In.): 1-1/2 Outside Diameter (In.): 1-5/8 Working Pressure (PSI): 500