OPW Spill Containment Manholes are designed to prevent spilled product from entering the soil near the fill and vapor return riser connections on underground storage tanks during normal tank filling operation, or in the event of tank overfill. The spill containers catch spillage to help prevent soil contamination and groundwater pollution.

OPW Thread-On Spill Containment Manholes are generally used on new tank or riser pipe installations.

Material:

Cover: Cast aluminum or cast iron Mounting Ring: Cast iron E-coating Bellows: Polyethylene

Base: Cast iron E-coating or Duratuff II Clamps: Stainless steel

Seals: Nitrile

Features:

Easy Installation – reduces

job-site time and installation costs. OPW Thread-On Spill Containers screw directly onto 4" NPT riser. No external connections to make; adjust the final grade height and support the unit with backfill.