Metal Pall Rings

Pall rings are one of the most basic, widely used types of tower packing. They are versatile, affordable options for distillation, absorption and stripping operations — including high volume and high-temperature processes.

As a leading supplier of tower packing internals, MACH Engineering manufactures plastic, ceramic and metal pall rings for industrial use. Our products combine excellent quality with an affordable price point — and we stand behind everything with some of the most knowledgeable customer service in the industry.

Contact our Houston, TX, office to learn more or request a quote for any metal pall ring packing.

Details and Specifications

Pall rings feature a design similar to a Raschig ring, but with the addition of a series of inward tabs that facilitate improved flow and greater efficiency. With a large surface area, but a minimal number of crevasses, they are effective at preventing against entrainment. This type of design has been in use for more than 50 years and is trusted in many demanding applications.

Materials and Sizes

Pall Rings MetalMACH Engineering manufactures metal pall rings from 304, 316, 304L and 316L stainless steel, as well as carbon steel and aluminum. Carbon steel is cost-effective and durable, but not suitable for use in corrosive environments. Stainless steel and aluminum offer better corrosion resistance — in particular, the 316 and low-carbon 316L varieties — but is more expensive.

Available sizes include 1″, 1 1/2″, 2″ and 3″. For detailed specifications and more information about finding the right size and quantity for your application, get in touch with a MACH Engineering representative directly. Our metal pall rings specification sheet is also available.

Download Technical Information PDF

Key Benefits

Metal pall rings improve on the Raschig ring design to deliver several benefits, including:

  • Higher loading capacity and throughput with minimal pressure drop
  • Higher mass transfer efficiency and better liquid/gas distribution
  • Excellent overall versatility, with good resistance to fouling
  • Excellent mechanical strength, for longer life and improved reliability

Use our stainless steel packing rings in high temperatures, as well as acidic, alkali, high salt and other harsh environments. Ceramic and plastic varieties are available, as well — explore our website for details.

Applications and Industries

Metal pall rings’ exceptional versatility makes them an excellent choice for many industrial processes — in particular, those that require both a low pressure drop under vacuum and a high capacity.

You’ll find our metal pall rings in distillation columns, reaction towers, quench towers and other vessels. Some processes they can help with include H2S, NH3 and SO2 absorption, steam stripping and direct contact cooling. They are not typically used for liquid redistribution.

Request a Quote Today

MACH Engineering is unique among other metal pall ring manufacturers in that we specialize exclusively in tower packing and related products and services. As a result, we are better-positioned to provide expert advice and dedicated customer support. When you’re unsure which type of tower packing is best for your application, we can run process simulations or provide other engineering consulting services.

If you know you need carbon steel, aluminum or stainless steel pall rings, we have a large selection in stock and ready to ship. Contact us by phone or email to request a quote.

MACH Engineering

MACH Engineering