*extrusions* eNewsletter article - Tech Talk
NewAge Industries Plastic Tubing and Hose Fluid Transfer Specialists


eNEWSLETTER - Tech Talk
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Issue Number 11 MARCH 2010
Tech TalkTech Talk
Product Comparison – PVC vs. Polyurethane

PVC tubing and PU tubingOur PVC (polyvinyl chloride) and polyurethane (sometimes abbreviated as PU) are thermoplastic materials that can be formed into a variety of shapes, including tubing and reinforced hose. Each material has its benefits and drawbacks.

While no single plastic tubing material can meet every application requirement, PVC meets many needs. It provides a broad range of chemical and corrosion resistance, excellent abrasion and wear resistance, outstanding flow characteristics, and rubber-like flexibility. Unreinforced PVC tubing, as compared with reinforced hose, offers glass-like clarity as well. Applications include food and beverage lines, dairy processing, pharmaceutical manufacturing, general industrial uses, chemical conveyance, protective jacketing, air and gas supply, and many others.

Some of PVC’s disadvantages are that it may harden and become less pliable when certain fluids (concentrated acids and alkalis, for example) are transferred through it. Typical PVC tubing does not react well with fuels and oils (again, the tubing will harden), although special PVC formulations are available for this application.

Polyurethane combines some of the best properties of rubber and plastic. It offers abrasion resistance like PVC and high elongation values (stretch-ability) like rubber. Polyurethane is naturally flexible and does not need any additives to retain its flexural properties.

Good chemical resistance combined with excellent weathering characteristics sets polyurethane apart from most other thermoplastics. It has exceptional resistance to most gasolines, oils, kerosene, and other petroleum-based products. Two polyurethane formulations are available—ether and ester. Ether polyurethane performs much better than ester in humid applications. Water will, in fact, attack ester polyurethane and greatly reduce its performance. Ester is also less resistant to fungus growth.

Applications for polyurethane tubing and hose include grease and lubrication lines, small motor fuel lines, pneumatic control systems, granular transfer, robotics, and more.

Both PVC and polyurethane may be colored or customized in a number of ways: heat formed into shapes, thermally bonded, overbraided for increased pressure and/or heat resistance, manufactured in harder or softer durometers. Tubing and hose can also be cut into specified lengths or made in custom sizes.

Some important differences between the two materials include low temperature use (PVC can be used at temperatures approaching –50°F, while polyurethane can handle those near –95°F), the transfer of odors or taste to products flowing within (PVC is odorless and tasteless; polyurethane is not), and weather resistant properties (PVC may harden and discolor when exposed to certain conditions, while polyurethane handles outdoor applications well). PVC generally costs less than polyurethane.

Click here to request a copy of NewAge Industries’ PVC-Polyurethane Comparison Chart.

pvc vs pu comparison chart

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NewAge offers Tubing and Hose in a wide variety of materials
PVC
Polyurethane
Silicone
TPR
Nylon
PTFE, FEP, PFA
Polyethylene
Polypropylene
Viton®
Hytrel®
Latex

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NewAge Industries' AdvantaPure products are manufactured to meet the strict sanitary requirements of the Pharmaceutical, Biomedical, Cosmetic, and Food Industries. Platinum-cured silicone tubing and silicone hose are manufactured in our state-of-the-art clean room and are ideal for applications that require cleanliness, non-toxicity, and resistance to extreme temperature variations. AdvantaPure also provides stainless-steel overbraided and rubber-covered fluoropolymer hose, sanitary fittings, and complete hose assemblies.

SPECIAL REDUCED PRICING
While Supplies Last

We are offering special discounts on select tubing, hose, & fittings products. These reduced prices are good while supplies last.

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We are your "Fluid Transfer Specialists®"
Contact Us For Experienced Technical Support:
Phone: 800-506-3924 or 215-526-2300
Fax: 800-837-1856 or 215-526-2190
E-mail:
esales@newageindustries.com

NewAge® Industries, Inc., 145 James Way, Southampton, PA 18966-3817


We are your "Fluid Transfer Specialists®"
Contact Us For Experienced Technical Support:
Phone: 800-506-3924 or 215-526-2300
Fax: 800-837-1856 or 215-526-2190
E-mail:
psales@newageindustries.com

NewAge® Industries, Inc., 145 James Way, Southampton, PA 18966-3817