Zhengmao Valve Insulated Butterfly Valve: No "Failures" in Low-Temperature Conditions, More Convenient with Floating Ball Valves
First, let's share some solid parameters with you: the valve body is made of 304 or 316 stainless steel, which has excellent corrosion resistance. The insulation layer is made of high-density polyurethane with a thermal conductivity as low as 0.024W/(m·K), which can stably keep the medium temperature between -40℃ and 120℃. The nominal diameter ranges from DN80 to DN600, and the nominal pressure can withstand 1.0MPa to 2.5MPa. The sealing surface is made of EPDM rubber, which can seal tightly whether it is low-temperature brine or food-grade liquid, with a leakage rate far lower than the 0.1% specified in national standards. Unlike some insulated valves whose insulation layers bulge after two months of use, our valve undergoes a 48-hour pressure holding test before leaving the factory, so you can use it with confidence once you get it.
Then let's talk about the practical advantages in use: it adopts wafer-type installation, which saves more space than flange valves, and workers can install it in half an hour. The butterfly plate is of eccentric design, so opening and closing are very light-even for large-diameter valves, you can turn the handle with one hand easily. The most crucial part is the insulation effect: a food factory customer once said that when using it to transport frozen juice, the outside of the pipe feels cool but not frosty, saving a lot of heating costs. If the production line needs to switch media quickly, matching it with our floating ball valve is perfect: the insulated butterfly valve is responsible for stable temperature-controlled transportation, and the floating ball valve is responsible for quick shut-off. For example, when changing batches of juice, the flow is cut off quickly without cross-taste, which is much more efficient than before.

Now this valve is widely used in food cold chains, pharmaceutical cold storages, and chemical low-temperature pipelines. For instance, in pharmaceutical factories transporting vaccine refrigerants, it can ensure no temperature fluctuations; in chemical plants transporting low-temperature ethylene glycol, it is corrosion-resistant and heat-preserving, preventing pipeline freezing. The most reassuring part is the after-sales service: this insulated butterfly valve comes with a one-year warranty. Whether you need technical guidance during installation or have problems with the insulation layer later, someone will respond within 24 hours of your call. Spare parts are also shipped quickly, so production won't be delayed.
Want to know more? Follow Zhengmao Valve's official website or WeChat official account for the latest product news and customer cases. For example, a cold chain logistics customer recently matched the insulated butterfly valve with the floating ball valve on a refrigeration unit, reducing energy consumption by 15%-such practical experiences will be shared. If you have technical questions or want a quotation, feel free to contact us. We will definitely not beat around the bush and explain things clearly to you.

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