Haws 8320 combination eyewash shower unit features a 10" ABS plastic shower head and twin ABS plastic anti-surge eyewash heads. A stainless steel pull rod operates a stay open shower valve and is equipped with a stainless steel stem. Resistant to damage, the ABS eyewash receptor is protected from alkalies, salt solutions, oils, and most acids. Activation for the eyewash is by a stainless steel push flag with a stay open chrome plated brass ball valve that is equipped with a stainless steel ball and stem. This combination unit is mounted by a hot dip galvanized steel pipe and floor flange assembly. This combination unit is suitable for various environments. Supply: 1-1/4" IPS. Waste: 1-1/4" IPS. All Haws emergency equipment models are certified by CSA to meet the ANSI Z358.1-1998 Standard for Emergency Eyewash and Shower Equipment.