Introducing Our Heavy-Duty All-Climate Water Quality Sampling Station
This issue we would like to introduce a new product group from Measurement Technologies, Water Quality Sampling Stations. We are offering a HIGH SECURITY –SEVERE ENVIRONMENT style sampling station is based on an original design created by Seattle Public Utilities in 1975.
It’s hard to improve on the material construction of the housing of this station as specified in the original design. A main base tube and cover made of 9” I.D. steel pipe with a minimum wall thickness of ¼”. However, that is where our improvements to this reliable design begin. The coating system, water tubing and drain hardware have all been improved to take advantage of advances in materials and finish.
Features of the new Water Quality Sampling Station
· Steel Pipe construction with a minimum wall thickness of ¼”.
· Base section of the station is Hot Dipped Galvanized.
o Special sweep-blast treatment to prepare surface for final powder coat.
· Base section and cover powder coated in Signal Blue (other colors available).
· Cover rides on 1” x 4” Nylon bar with three Nylon rub points around the cover to prevent damage to the powder coating.
· 1 ½” PVC Drain piping with special 8” x 1 ½” PVC Funnel.
· 3/8” Stainless Steel Water Tubing (316 SS) with ball valve.
Station can be installed for continuous flow, warm climate or cold climate conditions. The station comes plumbed and you determine how you install, warm or cold climate installation.
o Cold climate installation requires additional ball valve with drain. To be installed below frost line, with water drain tubing installed in the station. All you do is attach your drain tubing from the curb stop connection. You furnish all water line material to make connection between curb stop and connection at the base of the station. You install this just like a water service and use the material and method that crews are used to.
o Warm climate or continuous flow installation requires your crew to install a typical water service line. You may use a standard curb stop just to provide the ability to shut-off this station for any maintenance in the future.
Original SPU station New modified Station with SS tubing
One may ask why we use a curb stop in this sampling station when the largest manufacturer of sampling stations promotes a design that is repairable above ground. Well, the answer is simple, they are using a design that is over 100 years old and it is going to have problems at the main valve gasket because it closes against pressure, which creates a small area opening in the valve that catches small debris and stones. I know as for 25 years I gave away the main valve gaskets for this design to any customer that called me with main valve gaskets problems.
I didn’t want that problem to be discussed with our design at utility meetings. Additionally, it is hard when the manufacturer I refer to has 4 different gasket designs for the same station without any markings to determine what you need until you take it apart.
Think about it, when was the last time you had to replace a ball valve style curb stop. By using a ball valve you bury it once and don’t have problems in the future. No need to worry about repairing from above ground, it will never happen.
Installation is simple; you install the station just like water service. Tap the main, install a curb stop and box, run the water service line and drain line (if cold climate installation) to the base of the station, make your connections and install the station on a concrete footing.
Why a Measurement Technologies Designed Sampling Station?
You may ask what experience a manufacturer of chlorination/dechlorination equipment has with water quality sampling stations.
· 41 year waterworks career, starting as an estimator doing underground and treatment plant piping systems.
· Worked for three national ‘Clamp & Coupling’ manufacturers from field sales to National Sales Manager and Product Manager for steel fabrication. I also consulted to Dresser Manufacturing in steel tapping sleeve design.
· 25 years as owner of Manufacturing Rep Agency Gordhamer & Associates
· 25 years representing one of the nation’s largest manufacturers of sampling stations, with my Pacific Northwest territory being one of the strongest territories this manufacturer has for sampling stations and flushing hydrants.
During my 25 years in this industry I sold both above-ground and meter-pit style stations to almost every utility in the Pacific Northwest except for one group - Seattle Public Utilities (SPU) and their utility customers. In 2014 a member of their group got hit with E-Coli. The local Health Department’s review determined that the group was not sampling from the proper number of points throughout their system. As a result it was determined that each utility had to install additional stations. SPU had originally installed stations based on their own design for these systems starting in 1975, because no manufacturer was offering a station at the time.
The SPU group made it clear that they didn’t want the manufactured stations that all other utilities were using in my territory for the following reasons:
· Light duty cast aluminum body is easily damaged.
· Station was too low to the ground, and they wanted a higher height to draw samples from.
· Does not have internal drain piping
· Manufactured designs didn’t allow a continuous flow, if needed or desired.
These original stations are still in use today, though they need maintenance for time to time; with the station itself only needing painting and replacement of water tubing. The original stations were painted with the hardware and plumbing within done in plastic. This design requires that the stations run continuously, because when the water flow is turned off between samplings they would get bad samples on the next round of collection. Our view is the problem with bad samples stems from the fact that the plastic tubing cannot be sterilized properly each time a new sample must be taken.
The coating system also needed to be improved because these stations last for years; SPU has some 48 stands from the first installation back 1976 that are still being used.
The station’s finish and tubing was improved with our design upgrade.
When my old manufacturer didn’t want to get into fabricating this style of sampling stations as they are not set-up for this type of production and have no experience with the materials involved, which offered me the chance to do something that I had been doing for the last 41 years, work with steel fabrication and improve an existing product design.
If you need a High Security or high corrosion resistant sampling station this is the one for your system. It’s a proven design that is the oldest water sampling station design in use today. Whether you need a station that will survive the harshest weather or resist abuse and vandalism this station design is the right fit for your needs.Give us a call to lean more and request your quote today.