Necessity was the mother of invention when the founders of Clean Check, Inc. began working on a more economic solution to prevent sewer backup.

The founders of Clean Check, Inc. recognized that providing access to backwater valves was quite expensive and decided there had to be a better way.  After witnessing the amount of damage caused by sewer backups in their home state of Idaho, a state official and public works director began brainstorming with a wholesale distributor and an engineer to find a more cost effective solution.

The problem was literally a messy one.  Sewage can flood into homes if a sewer system becomes plugged, exceeds capacity or in the case of groundwater flooding.  While valves to prevent sewer backflow were available, many municipalities did not mandate the installation of the valves or, due to cost constraints, it was often difficult to enforce codes.

Before the invention of Clean Check’s patented extendable backwater valve, installing backwater valves so they were accessible for maintenance could be expensive and inconvenient.  Installation of previously developed backwater valves usually meant placing backwater valves inside a home, business or other structure.  The only alternative was placing the valve outside, using a manhole which could cost thousands of dollars and be rather unsightly as well as unsafe.

The founders of Clean Check, Inc. developed a method that would not necessitate placement of the backwater valve inside a home, business or other structure nor installation inside a manhole.

The result was ABS and PVC extendable backwater valves, which can be installed outside at virtually any depth, without the use of an expensive and unsightly manhole.  The valves were first made in 3-inch and, 4-inch sizes for installation in 3” or 4” sewer laterals. This allowed the valves to be checked or serviced in minutes, without exposing a home to sewer gases as a valve installed inside a house might.  In an effort to meet the demand by many municipalities for both commercial and residential use, the valve is now offered in 6-inch PVC also.

The need for the new valve was quickly recognized.  Homebuilders are using it, Municipalities are using it in public works projects, installers prefer it and insurers are requesting it because of the reduction in liability it provides.  Sales began first in Idaho for the IAPMO listed valve.  Now the Clean Check valve is sold from coast to coast from Alaska to New York and from California to Florida.  With tens of thousands installed, this product has proven to be helpful to the industry and a money saving invention for homeowners, taxpayers and municipalities alike.

A Clean Check extendable backwater valve consists of a tee-shaped valve body, top collar with stainless steel thumb screw and bottom collar with a replaceable PVC flapper attached.  The 3-inch and 4-inch valve bodies and collars are offered in either ABS or PVC while the 6”is available in PVC only.

A 6” or 8” riser pipe is provided by the contractor and field cut to the required length to extended from the sewer lateral to ground level.  A 4” internal riser is then assembled at the jobsite by cutting a 4” pipe that is 3-1/2” shorter than the 6” or 8” external riser was cut.  The flapper assembly is glued to one end of the 4” pipe and the riser guide on the other.  The entire 4” assembly is then inserted into the 6” or 8” riser.  Mated slots in the flapper assembly and body fit snugly together when inserted to prevent incorrect installation.  A set-screw in the 4” riser guide is then tightened against the external riser pipe to keep the assembly firmly seated.

Clean Check extendable backwater valves may be installed up to 12’ deep and still comply with ICC and IAPMO standards without installing a costly manhole.  For maintenance, the 4” internal assembly can be slipped out of the external riser at ground level so the flapper can be examined or replaced.  The flapper comes up to you instead of you going down to the flapper.  It is inexpensive, easy to install and maintenance takes minutes.  It’s everything a backwater valve should be.