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.
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.
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 Supplier | Material Description | Color | ASTM Material Designation | Material Density |
| Dow | DGDA 2490 | Black | PE 4710/3408 | High |
Pressure Rating
| Temperature | ||||
| SDR 9 | SDR 11 | SDR 13.5 | SDR 17 | |
| PSIG | PSIG | PSIG | PSIG | |
| BAR | BAR | BAR | BAR | |
| 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.
Applications
- Acids
- Bases
- Dry Gas Gathering
- Salt Water
- Gaseous hydrocarbons
- Liquid Hydrocarbon
Literature
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
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.
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