MACH Engineering’s lineup of tower packing products includes plastic Pall Rings in a range of sizes and configurations. Our plastic Pall Rings, also comparable to HiFlow Ring® and FLEXIRING®, typically feature a long cylindrical shape, with large windows on the sides and several crossbars, forming a lightweight web of edges that disrupts liquid flow without taking up excessive amounts of tower space. Alternatives to Pall Rings include solid-walled Raschig rings, which are typically made from ceramic or metal, and round plastic Tri-Packs® packing. Plastic Pall Rings offer several benefits compared to other random packing materials, including excellent strength and stability when exposed to high temperatures or harsh chemicals. They also deliver high levels of separation efficiency and operational flexibility.
Materials and Options
MACH Engineering plastic Pall Rings range in size from 5/8 to 3 inches in diameter. Larger rings have a less geometric surface area and a larger void fraction as well as a lower weight per ft3. To meet the needs of our clients, we manufacture Pall Rings in several different materials:
- PP (polypropylene)
- PE (polyethylene)
- PVC (polyvinyl chloride)
- CPVC (Corzan®)
- PVDF (Kynar®)
- PFA (Teflon®)
PE and PP are both low-density plastics with a low compression strength, suitable for temperatures up to 90˚C or 100˚C, respectively. PVDF is the densest option, with the highest compression strength. It’s suitable for temperatures up to 150˚C. PVC offers good density but is only suitable for use in temperatures up to 60˚C.
For a detailed list of potential applications and help with choosing the best plastic Pall Ring material for your needs, contact MACH Engineering and speak with one of our experts directly. Our Pall Ring product specification sheet is also available. Though our off-the-shelf packing materials provide options for most industrial applications, we also offer custom engineering services for your specific needs.
Applications and Industries
Plastic Pall Rings are among the most commonly used tower packing materials for applications involving gas and liquid separation. Because of their ability to withstand corrosive environments, they’re a mainstay in chemical process towers. Other applications include CO2 absorption, SO2, HCl and HF absorption or stripping, and chlorine and chlorine dioxide absorption in water or caustics.
Whatever the application, our plastic Pall Rings will deliver efficient, reliable performance at an affordable price point.
The Tower Packing Experts
Plastic Pall Rings are most reliable when you have the right product for your application. As a smaller firm with greater customization capabilities, MACH Engineering is well-positioned to partner with organizations in any industry. We’ll work with you to find the most efficient packing type for any application.
Whether you’re building a new tower or improving an existing one, count on MACH Engineering for quality products, expert advice, and exceptional flexibility. Unlike other plastic ring packing manufacturers, we limit the scope of our business to our specialties, which means we always have the resources to deliver world-class service in everything we do.