The OPW No-Bolt style mounting flange, model TFA-4090, is also used to mount FlexWorks tank sumps to 4″ underground storage tank bung fittings and attaches to the bottom of the sump base to provide a secure and liquid tight connection. This model has compression studs for added stability and fast and easy installation with a socket wrench.
OPW FlexWorks 4″ Tank Fitting Adaptor, Bolt Style, Extended Flange
FlexWorks Tank Sump Mounting Flanges are used to mount tank sumps to 4″ and 6″ UST bung fittings. The Flange Top models provide added flexibility in the positioning of pump or extractor outlets. The No-Bolt Style mounting flange is used to mount sumps to 4″ UST bung fittings and attaches to the bottom of the sump for added security and liquid-tight connection.