OPW Fueling 12" Monitoring Observation Well Manhole

Monitoring/observation well manholes are designed to be installed at grade level over a slotted PVC monitoring well where limited access and clear identification are essential.

Features

"œDO NOT FILL" Graphic Warning Statement
Permanently cast into cover with black equilateral triangle inset into a white background in accordance with API Recommended Practices 1615.

Secure Cover
Two recessed, self-aligning stainless steel bolts with O-rings secure cover to the body ring.

Prevention Against Surface Water Contamination
A gasket located in the ring prevents contamination from rain water or during washdown.

Maximum Load Bearing Capacity
Cast iron covers and body rings are heavily ribbed to ensure maximum load bearing capacity.

Trouble-Free Installation
Sturdy steel skirts extend nearly a foot below grade to ensure trouble-free installation even in deep concrete.

Optional Skirts
Extend a full 19-1/4" below grade in 12" and 18" diameter models for sandy soil locations.

Unpainted Covers & No Bolt-Down Provisions Available
On the 104MW for monitoring well applications where limited access is not required.

Full-Size Internal Diameters for Maximum Access and Working Area.

Highway 20 Rated (H20)
All OPW spill containers and manholes exceed the requirements of the Highway 20 rating.

Individually Boxed for Ease of Handling.

Materials

• Body ring: cast iron
• Cover: cast iron
• Skirt: steel (104 AOW)
• Gasket: neoprene