Steel and Stainless Steel Manholes with and without Working Vents.
We are a Full Line Betts Dealer. Please Contact Us for Items Not Listed.
All 16" manhole assemblies include gasket, clamp ring and bolt, and working vent(s) unless otherwise noted.
Order weld collars separately. We are a Full Line Betts Dealer. Please Contact Us for Items Not Listed.
All 20" manholes include gasket, clamp ring and bolt, and working vent(s) unless otherwise noted.
Order weld collars separately. We are a Full Line Betts Dealer. Please Contact Us for Items Not Listed.
Note: 12" x 16" manholes can no longer be used on NEW DOT tank vehicles (16" minimum diameter). You can replace or repair existing manholes. All 12" x 16" manholes include gasket, clamp ring and bolt, and working vent(s) unless otherwise noted.
Order weld collars separately. We are a Full Line Betts Dealer. Please Contact Us for Items Not Listed.
12"x16", 16" and 20" Collars in Steel, Aluminum and Stainless
Clamp Rings, Bolts, Nuts and Washers
10" Aluminum fill cover has spring cylinder assembly and buna gasket installed. No vents or plugs.
We stock gaskets in several materials and for other manufacturers. Please contact our parts department if you don't see what you need.
We stock vents for Knapp manholes. Please contact our parts department for info.
Allows a place for emergency unloading of overturned tanks.
Note - Betts has switched to a new design swing bolt for ASME full opening manholes. All ASME manholes built since 2018 have the new design. Instead of a 'barrel' head for the swing bolt pin to go through, the head is more of a 'bulb' as in the picture. The kits listed below give you the entire new assembly to replace the older style.
Wing-nut includes a staked-on bearing washer for decreased wear and a retention e-clip is included on top of swing-bolt to keep the wing-nut from accidentally unthreading off of the swing-bolt while opening manhole. Assemblies ending in “002” include swing-bolt pin (4463SL) and 1/8” coil pin (9Q8605).
Please note: Older style swing bolts have a larger coil pin hole diameter; therefore, specify the “002” kit to ensure the necessary replacement components are received. For more information use downloadable file to the right.
