Stainless Steel Expansion Tanks
Stainless steel expansion tanks, also called expansion vessels, are designed to protect closed water-heating and potable systems in environments sensitive to corrosion and in applications requiring strict sanitation and hygiene standards. The anti-corrosive features of stainless steel make these tanks an ideal solution for marine applications, coastal geographic zones and industrial processes exposed to harsh chemicals. In addition to durability, stainless steel expansion vessels also offer ease of disinfection, resistance to biological reactions and negligible toxicity. This bundle of features makes stainless steel expansion vessels suitable for medical, public health, food processing and many other applications.
Zilmet Stainless Expansion Tanks
Our stainless steel expansion tanks are manufactured in Italy by Zilmet who has over 50 years of experience in manufacturing expansion tank and has become a globally renowned brand because of their high-quality products. Their top-of-the-line expansion tanks are manufactured with premium features and to be long-lasting and high performing. Zilmet is also the only manufacturer to stock and supply a full line of stainless steel expansion tanks in the North American continent.
Stainless Steel Expansion Tanks are primarily found in food processing plants, breweries, auto manufacturers, hospitals, clean rooms, marine applications, dairy plants, and any other application that requires a highly anti-corrosive expansion tank. As an authorized distributor for Zilmet, we are able to offer stainless steel expansion tanks with exceptional quality and at very competitive prices. For pricing and availability please contact USA Roller Chain and Sprockets at (407) 347-3519 or submit the form at the bottom of the page and we'll be happy to assist you.
Stainless Steel Expansion Tank Features
- Extremely Anti-Corrosive 304-Grade Stainless Construction
- Seamless Diaphragm That Never Stretches or Creases
- No Bubbles or Corners to Trap sediment (Inhabiting Bacterial Growth)
- Butyl Diaphragms Suitable For Both Hot and Cold Applications
- ZS8, ZS12, and ZS18 Tanks are NSF61 Certified
- All Stainless Steel Expansion Tanks Come With a 5-Year Warranty
Stainless Steel Expansion Tank Material Description
- Shell - 304-Grade Stainless Steel
- Flange - Stainless Steel
- Inox Pro Membrane - Butyl Diaphragm
- Ultra Inox Pro Membrane - Replaceable Butyl Bladder
Stainless Steel Expansion Tank Sizes
|
Model
|
Capacity
|
Ø-Diameter
|
H-Height
|
Max. Pressure
|
Pre-charge
|
Connection
|
|---|---|---|---|---|---|---|
| 0.04 Gallons | 3.2" | 2.8" | 220 psi | 50psi | 1/4" NPT |
| Model | Capacity | Ø-Diameter | H-Height | Max. Pressure | Pre-charge | Connection |
|---|---|---|---|---|---|---|
| ZS05 | 0.13 Gallons | 3.7" | 4.7" | 150 psi | 50 psi | 1/2" NPT |
| ZS1 | 0.26 Gallons | 4.6" | 6.1" | 150 psi | 50 psi | 1/2" NPT |
| ZS2 | 0.53 Gallons | 5.5" | 7.7" | 150 psi | 50 psi | 1/2" NPT |
| Model | Capacity | Ø-Diameter | H-Height | Max. Pressure | Pre-charge | Connection |
|---|---|---|---|---|---|---|
| ZS8 | 2.1 Gallons | 7.8" | 10.8" | 150 psi | 36 psi | 3/4" NPT |
| ZS12 | 3.2 Gallons | 10.6" | 10.8" | 150 psi | 36 psi | 3/4" NPT |
| ZS18 | 4.8 Gallons | 10.6" | 14.2" | 150 psi | 36 psi | 3/4" NPT |

| Model | Capacity | Ø-Diameter | H-Height | Max. Pressure | Pre-charge | Connections |
|---|---|---|---|---|---|---|
| ZS24V | 6.3 Gallons | 10.6" | 19.1" | 145 psi | 22 psi | 1" NPT |
| Model | Capacity | Ø-Diameter | H-Height | E | Max. Pressure | Pre-charge | Connections |
|---|---|---|---|---|---|---|---|
| ZS60V | 15.9 Gallons | 15" | 33.9" | 6.7" | 145 psi | 22 psi | 1" NPT |
| ZS100V | 26.4 Gallons | 17.7" | 35.8" | 6.0" | 145 psi | 22 psi | 1" NPT |
| Model | Capacity | Ø-Diameter | H-Height | L | Max. Pressure | Pre-charge | Connections |
|---|---|---|---|---|---|---|---|
| ZS24H | 6.3 Gallons | 10.6" | 11.4" | 19.1" | 145 psi | 22 psi | 1" NPT |
| ZS60H | 15.9 Gallons | 15" | 16.1" | 25.2" | 145 psi | 22 psi | 1" NPT |
| ZS100H | 26.4 Gallons | 17.7" | 18.9" | 28.7" | 145 psi | 22 psi | 1" NPT |
Buy Stainless Steel Expansion Tanks
USA Roller Chain and Sprockets (USARC) is one of the nations leading suppliers of industrial power transmission products and has earned an A+ BBB rating because of our exceptional service and knowledge. Besides your day-to-day product needs, we also offer Expansion Tanks, heat exchangers, robotics, and custom conveyor building solutions.
To get a quote on Stainless Steel Expansion Tanks fill out the request for quote form and someone from our customer service team will contact you.
Frequently Asked Questions
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If your order is less than $300, no problem! Please give us a call at 407-347-3519 or email Sales@usarollerchain.com, and we will be happy to assist you!
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USA Roller Chain utilizes an extensive network of vendors and warehouses to ensure you get your items quickly! Our primary roller chain warehouse is located in Clermont, FL, but we have warehouses located all across the United States. Your order will be shipped from the closest warehouse to you that has your requested product in stock. This speeds up transit times and saves you money on shipping! If you have any questions about where an item will ship from, please CONTACT US
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In-stock items are typically shipped out in 1-3 business days.Made-to-order item lead times vary from 1-2 days up to 14-20+ weeks, depending on the product. If you need your items urgently, please let us know, and we will do our best to meet your required delivery date! If you have any questions, please CONTACT US
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If you are having an issue with your order, please CONTACT US as soon as possible so we can resolve it for you.
Most in-stock items can be returned within 30 days of the shipment date. MTO or Custom orders are not eligible for a return or refund. For a detailed explanation of our return policies, please click here.
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Absolutely! We may be called "USA Roller Chain", but we ship worldwide! Please CONTACT US for Export/International quotes or orders.





