Blog

Recently an industrial customer of Openchannelflow installed one of our fiberglass Packaged Metering Manholes and documented the steps involved in its installation. The Packaged Metering Manhole is located next to the customer’s loading docks, so a traffic loaded (H-20) top…

For industries required to measure and / or sample their effluents prior to discharging to a municipal sewer system or surface water, finding sufficient area to install a primary device can be a struggle.  In many instances, it is difficult to find a site that provides…

Industries measure their discharges either to meet their NPDES permit or because of municipal / county requirement. For industrial operators charged with monitoring their process discharges, a Packaged Metering Manhole can be a cost effective solution to their flow measurement…

At flow monitoring stations where a Packaged Metering Manhole is used to measure / sample a flow stream, the flow monitoring and sampling equipment is usually housed either in a dedicated equipment shelter or in a nearby building.  There are times, however, when neither…

Industrial Flow Monitoring / Sampling Stations provide pre-engineered, factory integrated solutions to the need for industrial dischargers to monitor, sample, and report their NPDES discharges.   A typical station consists of two parts: fiberglass Packaged Metering Manhole…

To help the growing list of operators of our fiberglass Packaged Metering Manholes maintain their investments, Openchannelflow has put together an inspection form to standardize the collection and reporting of data useful in establishing maintenance cycles for Packaged…

Packaged Metering Manholes (PMMs) factory integrate a flow measurement flume / weir into a fiberglass manhole to provide a complete, turn-key solution to monitor industrial and municipal flows.  Openchannelflow Packaged Metering Manholes come complete and ready for…

Packaged Metering Manholes from Openchannelflow are available with a wide range of options to help customize them to your particular application needs.  A key element of this customization is the variety of top access options available, with each top specially engineer for a…

Flow Sampling Manholes are specialized manholes designed for:  Measuring wastewater / pre-treatment flows Water quality sampling Parameter monitoring  Flow Sampling Manholes are most commonly used by industrial dischargers as part of a city's / county's permit…