Inlet Control Devices (ICDs)

During periods of heavy rainfall storm sewers can become overloaded, or surcharged. This can result in foundation seepage or, worse, storm and sanitary sewage back-up into basements where combined storm and sanitary system exist. Developed by the Department of Civil Engineering at University of Ottawa, inlet control devices (ICDs) have been used by sewer designers to preserve sewer capacity during peak flow events by restricting the flow from certain catch basins. The ICD, whether frame & sliding plate style, plate only, or plug style, is fitted over or in the lateral outlet pipe at the bottom of the catch basin. It has an orifice of a particular size and shape. The size determines what the flow rate will be at a given head. The “keyhole” shape serves three purposes.

First, the compound orifice shape promotes a self-cleaning action in debris laden flows, especially important in the critical early stages of flow capture. As the catch basin fills and the hydraulic pressure builds, the sharp corners of the orifice contract the flow, centering debris as it passes through the orifice.

Second, the slot at the bottom of the orifice induces a strong vortex action in the approach flow during periods of heavy rain. This vortex action scours sediment from the sump of the catch basin and away from the orifice.

Third, during dry periods, the slot at the bottom of the orifice draws water below the main orifice area. Floating debris is kept clear of the opening, reducing the likelihood of damming, and less debris passes from the catch basin into the main sewer.m

The simple, yet very effective design of the CANADIAN CONTROL DEVICES inlet control device has proven itself since 1984. The design of our framed ICD allows for the drainage of sediment from the channels in which the plate is held. For times of sewer maintenance the plate can be easily removed and replaced with the use of a hook from street level.

The advantages and benefits of choosing CANADIAN CONTROL DEVICES  to supply your Inlet Control Device needs are many.

Since 1984, the simple, yet very effective design has proven itself time and again. Specified for use by engineers and widely used by sewer and water main constructors, our devices are simple to install and are cost effective, thereby making your bid more competitive.

Do your plans call for a specific device made by another manufacturer? ICDs are all about flow control. Our device may be an acceptable or superior substitute. Drawings of our devices can be made available for review by engineers.

Our ICDs are crafted with highly durable, injection-molded PVC. They are unaffected by gas, oil, or road salt.

Our Frame & Sliding Plate style ICD installs easily through pre-drilled holes onto standard bolt pattern, saving time and labour.

Because of its low profile, our device is much less prone to damage during catch basin cleaning. Other bulkier designs reduce the amount free space in the sump, leaving less clearance for cleaning equipment.

For times of sewer maintenance the sliding plate can be easily removed and re-installed from ground level using a hook.

The design of the CANADIAN CONTROL DEVICES ICD frame allows for drainage of sediment at base of plate. The absence of sediment accumulation in the frame channels allows the plate to be easily removed and then fully re-inserted afterwards.

Our Plug style, available for 8″, 10″, or 12″ pipe, installs easily with a friction fit. Larger sizes are available by special order.

We can create a custom size orifice to achieve a particular flow rate at a given head.

The customer is king. We at CANADIAN CONTROL DEVICES will go to great lengths to deliver great customer service. We keep good inventory of standard sized ICDs. Our goal is to ship your order in 3 business days or less.