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manufactured in the usa

Nil-Cor® Fiber-Composite Ball Valves, Flanged Ball Valves, Novolac Epoxy Resin, Graphite Fiber Reinforced (500XP Series)

Nil-Cor® Fiber-Composite Flanged Ball Valve, Novolac Epoxy Resin (500XP Series) features a one-piece body, eliminating the leak path inherent in a body joint. Ball valves for corrosive chemical service used in construction of pressurized piping systems, and piping systems requiring electrically conductive valve bodies.

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Product Features & Benefits

  • ONE-PIECE BODY: The one-piece compression molded, novolac epoxy resin system optimizes both chemical resistance and mechanical capabilities of the 500XP fiber composite ball valve.
  • STRONG CONSTRUCTION: Rock solid composite construction of graphite fibers combined with high strength corrosion resistant novolac epoxy resin.
  • DURABLE AND LIGHT WEIGHT: Excellent alternative to high alloy valves. Nil-Cor ball valves are 50% - 80% lower cost and 1/3 the weight. Saves money on piping supports and makes Nil-Cor ball valves ideal for use on plastic and FRP flanged piping systems.
  • CHEMICAL RESISTANCE TO CORROSIVE SOLUTIONS: The novolac epoxy resin and graphic fiber combination valve provides outstanding resistance to solvents organic acids, caustics and salt solutions in higher temperature applications.
  • PIPE GROUNDING: The novolac epoxy resin, graphite fiber reinforced valve provides conductivity for those applications where grounding throughout the piping system is required.
  • CORROSION RESISTANT, SAFE AND RELIABLE: All Nil-Cor ball valves feature lightweight, corrosion resistant bodies, no wetted metallic components and a lock-out as standard equipment.
  • UNIQUE COLOR CODING: All valves have unique color coding for easy field identification.
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Technical Details

Materials of Construction

  • Body: Compression molded graphite and novolac epoxy resin
  • Gland: Hastelloy®-C with integral locking plate.
  • Stem: Hastelloy®-C metal insert with molded graphite fiber/ novolac epoxy composite on all wetted surfaces*. Note: 10” stem Solid Hastelloy®-C. Consult Factory for options.
  • Gland Bolts: Hastelloy®-C
  • Stem Packing: PTFE V-Rings.
  • Thrust Washer: Glass and carbon-filled PTFE
  • Insert: Compression molded graphite and novolac epoxy 
  • Seals: PTFE-coated FKM elastomer O-ring.
  • Ball: Compression molded graphite fibers and novolac epoxy resin.
  • Seats: Self-Relieving Virgin PTFE. Glass-filled and Cavity-Filler seats available.
  • Operators: Composite lever (1”-4”). Stainless Steel handle adapter (5”-8”). All handles have locking provision. Gear is standard on 10”, and recommended on 6”& 8”.

Size Range

  • Available in sizes 1” TO 10” (ANSI B16.5 Class 150 Flange Drilling; DIN10 PN10, PN16 and JIS 10K)
  • Valve face to face dimensions meet ANSI B16.10

Service Temperature

  • (-)50°F to 300°F
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Pressure Rating

  • to pressures of 275 PSIG


  • Oil Refinery
  • Power Industry
  • Paper and Pulp
  • Chemical
  • Mining
  • Water and Wastewater
  • Hydrogen
  • Natural Gas Distribution
  • Lithium
  • Steel Processing
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This resource is intended as a guideline to be used with all available information to determine suitability of material selection. We suggest thorough research which should include known applications when determining material. The information contained herein is provided only as a guide for the use of ANDRONACO INDUSTRIES products.

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