Expansion Joint Bolt Circle Diameter 7 1/2 in Bolt Hole Size 0.75 in Bolt Hole Threading Unthreaded Burst Pressure 853 psi Compression Distance 2 in Connection Type Flanged Expansion Distance 1 3/8 in Expansion Joint Type Double Bulb Features Absorbs Water Pulsation and Minimizes Water Hammering Applicable for Suction and Delivery (Discharge) Flange Diameter 9 in Flange Material Stainless Steel Flange Material Finish Not Applicable Flange Material Grade 304 For Fluid Type Water