Pima Valve, Inc.
6525 W. Allison Rd, Chandler, AZ 85226
Phone: (480) 646-8456, Fax: (480) 646-8457
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Internal Valve Protection

Pima Valve has developed manufacturing practices and coating procedures to accommodate internal coating of our valves, as specified by our customers. This cutting edge coating technology provides an extra layer of protection when the valve is subjected to harsh environments, chemicals, or liquids that may artificially erode the working life span of our valves. We have worked with EPDM (rubber), Fusion Bonded Epoxies, and Ceramic Based coatings to line our valves, at our customer’s request. Pima Valve is continuing to expand our use if internal linings and products that best meet our customer’s requirements for service. Here are some examples of products we have used to coat the interior or our valves.

Scotchkote 134 – Fusion Bonded Epoxy

Scotchkote 134 fusion bonded epoxy coating is a one part, heat curable, thermosetting epoxy coating designed for corrosion protection of metal. The epoxy is applied to preheated steel as a dry powder which melts and cures to a uniform, coating thickness. This bonding process provides excellent adhesion and coverage on applications such as valves, pumps, pipe drains, hydrants and porous castings. Scotchkote 134 FBEC assistant to waste water, corrosive soils, hydrocarbons, harsh chemicals and sea water. Powder properties allow easy manual or automatic application by electrostatic or air - spray equipment. When applied over a suitable primer, it is appropriate for operation at moderate temperatures and pressures in the presence of H2O, CO2 and CH4, crude oil and brine.

Scotchkote 134 FBEC has been used extensively in the oil and gas industry to coat the exterior and interior of line pipe. Over 40,000 miles (65,000 km) of Scotchkote coated pipe have been installed throughout the world. This technology has been expanded through 3M research to develop chemically stable, high temperature/pressure resistant internal linings for use in drill pipe, primary and secondary recovery tubing, and pipe for oil, gas and water transportation. Coating properties have been proven by rigorous 3M autoclave testing, and the results verified by independent laboratory and customer investigation.

DuPont Teflon (ETFE) Coating

Ethylene tetrafluoroethylene (ETFE) is a thermoplastic copolymer derived from the polymerization of ethylene and tetrafluoroethylene (Teflon®) monomers. These materials are extremely tough and abrasion-resistant having excellent chemical resistance and continuous operating temperatures up to 150°C (300°F). ETFE is also an excellent electrical insulator and has good nonstick and low friction properties. The Teflon® 532-63xx ETFE coatings listed above represent a new, improved formulation of ETFE resins. All of the ETFE coatings listed above are now suitable for food contact end uses.Using appropriate product combinations, coating systems are now available for use in a wide variety of applications ranging from thin-film systems (75–250 um [3–10 mil]) for service involving abrasion resistance or mild chemical service,to thick film systems (up to 1300 um [50 mil]) for linings where excellent chemical protection is required. Thick-film Teflon® ETFE coatings have been improved for application in thicker films per coat and for better sag resistance when approaching the final thickness. The application technique involves a spray-and-bake procedure whereby multiple coats, sprayed and baked individually, are used to achieve the desired final film thickness. The resulting finish is tough, seamless, and without pinholes—perfect for applications in harsh chemical environments.

Belzona 1391

Belzona 1391 (Ceramic HT) is a two component high temperature coating system designed to operate under continuous immersion of up to 248 Degrees Ferinheight (120 Degrees Celsius). This Blezona product provides excellent erosion-corrosion resistance at elevated temperature. Belzona 1391 (Ceramic HT) is:


  • Cold temperature cure ensures no fire risk
  • Suitable for contract with hot (85 Degrees Celsius) potable water
  • Good electrical insulation characteristics


  • Bonds Strongly to most rigid substrates
  • High adhesion maintained over full service temperature range


  • Resistant to steam our process
  • Excellent chemical resistance
  • Excellent erosion-corrosion resistance

Belzona 2141

Belzona 2141 (ACR Elastomer System) is an elastomer system designed for coating applications subject to extremely high localized pressures created by cavitation and erosion. This versatile liquid applied material retains adhesion under long term immersion and dissipates energy created under medium to high intensity cavitation conditions. Belzona 2141 can be applied as either a one or two coat system by brush or applicator to most commons surfaces such as metals, alloys, natural and synthetic rubbers, fiberglass and composites.


  • Cold temperature cure ensures no fire risk


  • Coatings allow localized protection where required


  • Long term adhesion retention on immersion
  • High resilience: high tear strength: elongation at break (ASTM D412) Typically 530%
  • Meets requirements of the ASTM D3623 (90 day immersed) cathodic disbondment test
  • Independent tests show performance 297% better than stainless steel and 1,394% better than E-grade steel in the ASTM G32 cavitation erosion ultra-sonic vibration test method

Past Pima Valve Coating Customers:
  • Saudi Aramco Oil Company - Dhahran, Saudi Arabia
  • JGC International – Yokohama, Japan
  • Samsung Engineering Corporation LTD, Seoul, Korea
  • CMK Limited, Seoul Korea
  • J. Ray McDermott Engineering, Houston, TX
  1. NAM - National Association of Manufacturers - www.nam.org
  2. NFIB - National Federation of Independent Business - www.nfib.com
  3. ASTM - American Society for Testing and Materials - www.astm.org
  4. ANSI- American National Standards Institute - www.ansi.org
  5. MSS- Manufacturer's Standardization Society - www.mss-hq.org
  6. AWWA - American Water Works Association - www.awwa.org