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304 Stainless Steel Construction: Corrosion-resistant vertical pressure tank designed for durability, long-term corrosion protection, and reduced replacement-related service over time, helping reduce how often owners need to replace a failing tank
Seamless Butyl Diaphragm: This diaphragm tank uses a seamless, fixed separator as a flexible membrane to help protect the system by reducing common pressure issues during operation; unlike a bladder design, where the bladder contracts and expands inside the tank, a fixed diaphragm separates air and water differently. Bladder-style designs can develop internal leaks, and water can enter the air side if the bladder fails. Diaphragm tanks often provide slightly higher drawdown than bladder tanks, often last longer than bladder tanks beyond 5–7 years, and it is critical to check and adjust tank pressure correctly so the tank continues to work properly.
Compact Vertical Design: Space-saving tank suitable for tight installation areas
Smooth Internal Design: Reduces areas where sediment can collect to support high hygiene standards, including food and beverage processing environments
Helps Inhibit Bacterial Growth: Internal design minimizes trapped water pockets and buildup, and diaphragm tanks are often preferred for potable water systems
Suitable for Hot and Cold Water Applications: Designed for versatile system compatibility, with potable-water-oriented performance in conjunction with systems where reliable pressure settings, water storage, and consistent operation matter
1" NPT Connection: Standard connection for easy integration into water systems
Benefits
Corrosion-resistant stainless steel construction supports long service life on small residential systems that need dependable pressure control
Seamless diaphragm design helps improve tank efficiency and durability
Reduced sediment trapping helps support cleaner water systems
Reliable pressure stabilization helps support consistent performance when household demand changes, provided the pressure switch and tank are matched correctly
The Zilmet ZS24V is a vertical stainless steel pressure tank with a 6.3 gallon capacity, 1" NPT connection, and 10.6" x 19.1" size, built for residential and light commercial hot and cold water systems that need compact, durable pressure control. It works with variable-speed pump applications to help the well pump run more smoothly, reduce frequent pump cycles, and support steady pressure as system demand changes while minimizing pressure fluctuations and water hammer in the system. Manufactured with 304 stainless steel and a seamless butyl diaphragm, this vertical pressure tank is designed for durability, certified for potable water safety, and ideal where high hygiene standards and corrosion protection matter, including marine use. It is also used in closed-loop heating systems for thermal expansion control, making it a practical fit for well water systems and heating applications where stable pressure, low maintenance, and long service life matter. The seamless diaphragm design helps prevent stretching or creasing while reducing sediment traps and inhibiting bacterial growth. Working with the diaphragm, the compressed air chamber stores energy as water enters and helps push water out during use for steady flow while reducing water hammer.
Product Specifications
Model #: ZS24V
Manufacturer: Zilmet
Tank Capacity: 6.3 Gallons
Connection Size: 1" NPT
Tank Orientation: Vertical
Material: 304 Stainless Steel
Tank Dimensions: 10.6" x 19.1"
Diaphragm Material: Heavy-duty seamless butyl material
The tank is manufactured with 304 stainless steel.
Is the diaphragm suitable for hot and cold water applications?
Yes, the butyl diaphragm is suitable for both hot and cold water applications.
What are the drawdown ratings for the ZS24V?
Drawdown is 1.9 at 30/50 PSI and 1.7 at 40/60 PSI.
What applications are listed for this tank?
Listed uses include high corrosive areas, food processing plants, rain water collection, breweries, water hammer arrestors, variable speed pump applications, hospitals and clean rooms, and marine applications.
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