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Why Campbell-Sevey Supplied IMI Flow Design’s AutoFlow Valves for the Vikings Stadium


When you are building a stadium where usage is regularly pushed to maximum capacity, performance and reliability is critical. Because of this, the engineers behind the Vikings stadium design, M-E Engineers, specified automatic balancing valves vs. manual. By doing so, it ensures that the stadium’s heating and cooling systems are accurately and dynamically balanced under all operating conditions.

Dynamic AutoFlow valves adjust to varying differential pressures to provide design flow at any pump speed. IMI Flow Design’s AutoFlow valves were selected because they are tamper proof, since each valve is calibrated and set for flow at the factory, whereas a manual valve’s set position can be lost easily with just a minor turn of a valve.

Mag Mechanical, the stadium’s mechanical contractor, purchased IMI Flow Design’s AutoFlow Complete Hook Up Kits from Campbell-Sevey for all the hydronic balancing needs. These kits package several components together, not only saving space and eliminating overall piping lengths required for proper balancing, but also reducing labor.

The Hook Up Kits included IMI Flow Design’s H2 series Flexible Hose for ease of installation for 100’s of the automatic balancing kits. IMI Flow Design’s stainless steel hoses have an industry leading 3-year warranty. This ‘Best In Class’ hose gave Mag Mechanical the confidence to use IMI Flow Design’s product on a project that will take several years from start to opening day.

With the Vikings Stadium construction, construction required tight delivery times. IMI Flow Design’s standard 9-day lead times, and quick ship programs of 5 & 3 days, gave Mag Mechanical the confidence that IMI Flow Design’s production schedules would not slow them down.

For more information on IMI Flow Design products, and whether they are a good fit for your hydronic system, contact the team at Campbell-Sevey.


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