Introducing Our New Multi-Climate Sampling Station
Last year we introduced our High Security Water Quality Sampling Station with a warm climate (continuous flow) design. We promised we would also be introducing a cold climate style station with the ability to be drained during cold months. After a few delays we are pleased to introduce our cold climate configuration, a new style sampling station that answers all issues dealing with field problems resulting from freezing water conditions and stations corroding from sterilization before sampling.
After representing and selling the industry’s leading sampling station for over twenty-five years I have seen the good, bad and ugly of what happens to sampling stations in the field. In designing this new station, I relied on not only my years of experience representing leading station makers and seeing the short comings in their designs. I also used my knowledge from working in the in steel fabrication industry, PVC sales and production (pipe & fittings), wholesale distribution and sitting on AWWA’s Disinfection of Facilities Committee in developing the new design we are introducing.
In my opinion the number one problem with the most popular cold climate sampling station is the main valve gasket (shut off valve), which is down at the depth of bury. To replace it you have to isolate the station, so in most cases utilities have installed a curb stop in front of the station in between the water source and station. This popular station offers the feature that you can repair the valve from above ground with no need to dig it up. Now, why do you need to replace this valve? If you have any small debris (pebbles) in your system, they will find their way to the station in time and when you close the valve against pressure the pebbles will get lodged in the gasket. This will cause it to leak, resulting in the need to replace the gasket by closing down the station. The gasket will also in time just wear out, it’s not the large. My feeling is why have this type of valve in the first place? If you already are installing a curb stop in front of the station, why not use that as your main shut-off valve for the station during cold months? After all, when was the last time you had to replace a ball valve style curb stop?
Why risk the wear and tear on the main valve design station? Most of my customers didn’t drain the station during the warm months anyway. They would only drain the stations when temperatures would drop below freezing. However, they still had to open and close this valve every time they used the station insuring that eventually you will need to replace this valve gasket in time. So our design moves ball valves into the upper station working area. You normally shut-off the station this way so the waterway stays sealed between samples. If freezing temperatures are expected with our new design you simply turn off the main Curb Stop and drain the station.
The next issue with this station is the cast aluminum box. The spray solution used to purify the station before taking samples is what causes the station body casting to corrode. A salt environment also has the same reaction with the cast aluminum. We have designed our station using a UV resistant polyethylene body with an inner tube using PVC pipe. All of our piping is marine grade stainless steel tubing. As a result, WE HAVE NOTHING THAT CORRODES in our station.
Now for the UNIQUE FEATURE of our station compared to our competition. We feature an internal drain that can be plumbed to the curb or directly into a storm or sanitary sewer line. What this means in cold climates is you won’t create a skating rink in front of your station during the winter. And in other applications you can have the water discharged without it being dumped out across the sidewalk, in front of customers.
Our station design can be installed to any depth of bury and it comes packaged with the stand pipe separate, which makes for lower shipping cost and allows your crews to install the station without hassle. The station can be installed in a concrete pad or sidewalk. All that is needed to install it is to remove the outer body from the inner tube (three bolts), set the inner tube to the proper location, install drain piping and pour your concrete. After the concrete has set up reinstall the outer tube, tighten down the water tubing valves in the station head and pressure test to insure all connections are tight.
This is the first water sampling station to feature an internal drain and no need to worry main shut-off valve design. If you are looking to improve your current station with state of the art design this is your answer. Available from your local waterworks distributor, or contact our sales department for more information and quotation.