Automatic Flow Limiting Valves do not require any additional balancing as do Manual Balancing Valves, therefore they reduce labor costs from not having to balance and rebalance the valves.

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"Love the safety of having clean water. The quality customer service from management all way to the technicians is exceptional."

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If you are dissatisfied with your Culligan product for any reason within 30 days of your purchase, Culligan will remove the product and refund the purchase price.*

Experience the luxury of great-tasting, high-quality water with this modern, free-standing unit that seamlessly fits into any office space.

"Absolutely the best customer service and always answers my questions quickly and positively. The Culligan water is great and gets delivered on schedule with no hassle."

The Griswold Controls Automatic Flow Limiting Valve is used in many different applications, mostly in the HVAC industry to maintain balance in a HVAC System. The stainless steel flow limiting cartridge has a spring loaded cup that dynamically absorbs pressure fluctuations resulting from changing system conditions due to varying heating/cooling loads. These fluctuations in pressure, within a given pressure differential control range, do not change the flow through the valve, therefore the flow is controlled to within +/- 5% of the designed flow.

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Our Culligan water experts are ready to help you find the right solution for your problem water.

Isolator R, Isolator Y and K valves are available with a wide range of flows and PSID ranges, and are the perfect choice for tight spaces. The valves offer easily accessible flow control cartridges, accessible without breaking piping connections, so exchange of the cartridge for flow changes can be made as required. Isolator and K valves are the perfect choice for terminal boxes, VAV boxes, fan coil units, heat pump installations, and base board/in cabinets.