Your browser is out of date.

You are currently using Internet Explorer 7/8/9, which is not supported by our site. For the best experience, please use one of the latest browsers.

manufactured in the usa

Poly-Chem® Ball Valve, Chemical Valve, Polyethylene Chemical Ball Valve

Poly-Chem® polyethylene chemical ball valves are a type of valve specifically designed for handling chemical substances and fluids. The main advantage of using polyethylene chemical ball valves is their chemical resistance. Polyethylene is highly resistant to a wide range of chemicals, including acids, alkalis, solvents, and corrosive substances. This makes them suitable for handling aggressive and corrosive fluids without degradation or failure.

It's important to note that while polyethylene provides excellent chemical resistance, the specific design and materials used in a valve can vary. Before making your final determination on valve suitability for your specific application and compatibility with the chemicals and conditions it will be exposed to, please contact our customer service specialists

Request a Quote Technical Support

Product Features & Benefits

  • POLYETHYLENE: Corrosion-free due to high-grade polymeric materials. There are no metal internal parts.
  • RUGGED AND RELIABLE: Polyvalve Poly-Chem® valves are the strongest part of a polyethylene piping system.
  • FUSED BODY SHELL: The fused body shell removes leak paths to the atmosphere.
  • ENHANCED SEALING PERFORMACE: Multiple elastomeric stem seals provide improved sealing efficiency compared to a single seal. The additional seals create multiple barriers, reducing the chances of leakage and ensuring a tighter seal.
  • DUAL ELASTOMERIC SEATS: The drop-tight shutoff from dual elastomeric seats creates a leak-tight seal.
  • SMOOTH BORE: The smooth bore gives excellent flow characteristics in both full and standard port designs.
  • VERSATILE SERVICE OPTIONS: Suitable for buried service or above ground service.
  • BROAD TRIM SELECTION: Variety of available trim depending on specific applications.
  • END CONFIGURATIONS AVAILABLE: Butt fusion end configuration is standard. Flanged end configurations are also available.
contact us

Why use Poly-Chem® Valves?

Polyvalve is the first company to manufacture polyethylene (PE) valves for natural gas distribution.

Millions of Polyvalves have been sold since 1976 and are in use throughout the world. Here’s why:

  • Rugged and reliable Polyvalve Poly-Chem® valves are the strongest part of a polyethylene piping system
  • Drop-tight shutoff from dual elastomeric seats
  • Fused body shell removes leak paths to the atmosphere
  • Multiple elastomeric stem seals
  • No metal internal parts
  • Corrosion-free due to high-grade polymeric materials
  • Smooth bore gives excellent flow characteristics in both full and standard port designs
  • Suitable for buried service or above ground service
  • Wide variety of trim for your specific application
  • Flanged end configuration available (butt fusion end configuration is standard).

All Metal System (Welded or Bolted)

  • Subject to internal and external corrosion and internal scaling
  • Hazardous leaks at pipe connections
  • High cost of alloy pipe, valves, and fittings
  • Rigid metal piping systems expensive to modify
  • Not flexible or adaptable

 Polyethylene Pipe-to-Metal Valve Systems

  • Subject to the inherent weakness of combining incompatible materials
  • Hazardous leaks may occur where the polyethylene and metal meet
  • High cost of alloy valves and adapters.

All-Polyethylene Systems

  • Intrinsically safe
  • Pipe is fused to the valves so there are no leak points
  • No chance of internal or external corrosion
  • Lightweight and flexible
  • Can rest on ground.

Technical Details

Design Features

Materials of Construction and Trim Selection

(additional material breakdown information can be found under Product Literature)

Item Cat A Trim Cat B Trim Cat C Trim Cat D Trim
Body HDPE HDPE HDPE Special Applications
Ball Polypropylene Polypropylene Polypropylene
Seat Retainers Polypropylene Polypropylene Polypropylene
Seats EPDM EPDM Viton A
Stem Modified Polyphenylene Oxide Poly-etherimide Poly-etherimide
Stem Seals EPDM EPDM Viton A
Groundwater Seal Neoprene Neoprene Neoprene
Wrench Adapter Polypropylene Polypropylene Polypropylene
Primary Applications; 2" full port through 12" full port

Strong Bases: Hydroxides, caustics

Organic Acids: Acetic Ammonia and ammonium salt solutions, Nonpotable water, Air and inert gases

Alcohols and Glycols

Metal Salt Solutions: Bicarbonates, bromides, carbonates, chlorides, cyanides, ferri-cyanides, fluorides, hypochlorites, nitrates, oxides, phosphates, sulphates, or sulphides, of Aluminum, Barium, Calcium, Copper, Iron, Magnesium, Mercury, Nickel, Potassium, Silver, Sodium, Tin, or Zinc.

Other: Crude oil, produced water, carbon dioxide, hydrogen sulphide, landfill methane and leachate, hydrogen peroxide.

*Poly-Chem® Valves are not suitable for use on aromatic hydrocarbons, ketones, ethers, gasoline

*Poly-Chem® Valves are not intended for fuel gas services

*Please refer to the PE pipe manufacturers recommendations for additional service compatibility information or send full service details to Polyvalve Valves for our advice

*For applications not listed, please contact Polyvalve for valve recommendations

*For 1/2" through 2" standard port, consult Polyvalve

*For inorganic acids such as hydrochloric, nitric, sulphuric, phosphoric, hydrofluoric and boric please contact Polyvalve for valve recommendations

Body Resin

Resin SupplierMaterial DescriptionColorASTM Material DesignationMaterial Density
DowDGDA 2490BlackPE 4710/3408High

Pressure Rating

SDR 9 SDR 11 SDR 13.5 SDR 17
Acids, bases, dry gas gathering, drain water, and salt water
74°F 200 160 128 100
23°C 13.8 11 8.8 6.9
140°F 100 80 64 50
60°C 6.9 5.5 4.4 3.4
Gaseous Hydrocarbons
74°F 128 102 82 64
23°C 8.8 7.1 5.3 4.4
140°F 64 51 41 32
60°C 4.4 3.5 2.8 2.2
Liquid Hydrocarbons
74°F 100 80 64 50
23°C 6.9 5.5 4.4 3.4
140°F 50 40 32 25

Size Range

  • ½" - 16"

Temperature Range

  • Up to a maximum temperature of 140°F, dependent on media. Please contact Customer Service for additional assistance.  


  • Acids
  • Bases
  • Dry Gas Gathering
  • Salt Water
  • Gaseous hydrocarbons
  • Liquid Hydrocarbon
technical support


How to order Polyvalve Poly-Chem® Ball Valves can be found in the Polyvalve Poly-Chem® Ball Valve brochure above or by contacting our sales support team. 

Contact Us
Download Our Product Catalog
explore our full offering

Download Our Product Catalog

Download Now

Contact Us

Give us a call at 616-554-4600 or fill out this form and one of our experts will be in touch as soon as possible.

* marks required fields

Technical Support Inquiry Request a Quote

Please Upload all supporting Files Here. The accepted file formats are jpg,jpeg,png,gif,pdf,doc,docx. Thank you.