






The Zilmet ZS24H is an essential horizontal stainless steel pressure tank built to help maintain steady water pressure in a home system for reliable flow, strong performance, and better efficiency, with a 6.3 gallon capacity, 1 inch NPT connection, and compact 11.4 inch x 19.1 inch size ideal for tight mechanical spaces or booster pump setups. It features a 304 stainless steel tank body with drinking-water certification for compliance and durable materials that are often more resilient in corrosive or marine environments than carbon steel, plus a seamless butyl diaphragm tank designed to avoid stretching or creasing, with no bubbles or corners to trap sediment. The butyl diaphragm is suitable for hot and cold water applications to provide higher drawdown efficiency and consistent performance. Maximum working pressure is typically 145 to 150 psi, with an operating temperature range of 14°F to 210°F.
This tank is suited for applications including high corrosive areas, food processing plants, rain water collection, breweries, water hammer arrestors that minimize pressure shocks and vibrations in plumbing, auto manufacturers, variable speed pump applications, hospitals and clean rooms, and marine applications to ensure dependable operation across the system.
Zilmet has over 50 years of experience in manufacturing high-quality expansion tanks - It produces over 5 million tanks and over 1 million heat exchangers annually - Fully vertically integrated, designing and manufacturing all diaphragms and bladders internally Zilmet has created a compact design with a seamless diaphragm that never stretches or creases. There are no bubbles or corners to trap sediment, inhibiting bacterial growth.
• Stainless steel construction helps resist corrosion for long service life; diaphragm tanks often last longer than bladder tanks, and well-maintained cold water tanks can last 20 to 30 years
• Seamless diaphragm design helps reduce sediment accumulation
• Bladder tanks may require periodic checks for air leaks and typically last 5–7 years with proper maintenance, while this fixed-diaphragm design reduces that maintenance concern; check air pressure, inspect for leaks or damage, and watch for common issues over time
• Suitable for both hot and cold water systems; regular inspections can significantly prolong tank lifespan, and regular maintenance is important and crucial for energy efficiency and long-term performance; owners can start with routine inspections, and we recommend professional review when you need help adjust system settings or choose the right pressure tank
• Compact horizontal design for use in tight spaces and a right pressure tank setup that supports consistent flow and dependable supply as a practical solution for home water demand
| Drawdown @ 40/60 PSI | 1.7 |
|---|---|
| Drawdown @ 30/50 PSI | 1.9 |
| Discharge Connection | 1" NPT |
| Material | Stainless Steel |
| Capacity | 6.3 |
| Size | 11.4" x 19.1" |
| Source | https://www.zilmetusa.com/ |
| Model # | ZS24H |
| Manufacturer | Zilmet |
| Shipping Weight | 11 |
The Zilmet ZS24H is a horizontal pressure tank with a 1 inch NPT connection for water system installations.

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