Poly-Gas Valves

Polyethylene Valves for
Natual Gas

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Poly-Gas Cutout C-Style

Why use Poly-Gas® Valves?

Polyvalve Poly-Gas® valves are everything you’d expect from the company that invented polyethylene valves.

Millions of Polyvalve Poly-Gas® valves have been sold since 1976 and are in use throughout the world. Here’s why:

  • Rugged and reliable Polyvalve Poly-Gas® valves are the strongest part of a polyethylene piping system.
  • No metal internal parts.
  • Bubble-tight shutoff from dual elastomeric seats.
  • Fused body shell eliminates leak paths to atmosphere.
  • High-grade polymeric materials eliminate corrosion.
  • Multiple elastomeric stem seals.
  • Smooth bore gives excellent flow characteristics in both full and standard port designs.

Materials, Codes and Standards, Applications

Materials of Construction
*Note: 12" has gear box and cast iron 2" square nut adaptor.
8" will have a choice of either gearing or wrench.
1¼" and 2" C-style is Standard Bore only.
Available in copper tubing standard size (CTS).
Item 1/2" through 2"
Polyvalve II™
(C-style)		 2" through 12"
Body Polyethylene Polyethylene
Ball Acetal Polyethylene
Seat Retainer Acetal Polyethylene
Seat Buna N Buna N
Stem Stainless Steel Acetal
Stem Seal Buna N Buna N
Ground Water Seal Neoprene Neoprene
Wrench Adapter Acetal Polypropylene*
Adapter Screw Stainless Steel  
Adapter Button Acetal  
Codes and Standards
  • Polyvalve Poly-Gas® valves meet or exceed the requirements of:
    • ANSI B16.40
    • ASTM D-2513
    • U.S. Department of Transportation 49CFR, Part 192
  • In addition, as required by customers, certain sizes and materials of valves meet or exceed the requirements of CSA B137.0 and B137.4
  • Certain Polyvalve Poly-Gas® valves have successfully passed 10,000-hour tests to ISO 4437
  • Polyvalve is an ISO 9001 certified company.
Body Materials Chart
Note: On 8” full bore and 12” full bore only the main body section is in DGDA 2490 material. Different pipe ends are fused on to suit customer’s specific material requirements.
Resin Supplier Material Designation Color ASTM
Material
Designation		 Material Density
CP Chem TR-418 (D6500) Yellow PE 2708/2406 Medium
Dow DGDA 2490 (UAC3700) Black PE 4710/3408 High

12" Poly-Gas® valve fusion operation

Applications

For use in:

  • Natural gas distribution
  • Natural gas gathering
  • Landfill gas (methane)
  • Hydrocarbon fuel gases
  • Hydrogen
  • Air
  • Other inert gases
    (helium, argon, neon)

Poly-Gas® Valve Availability

Poly-Gas® Valve Availability Chart (Ball Valves for Natural Gas)
          Note: CV in US gal/min @ 1 psi Δ P
KV in litres/min @ 1 bar Δ P		   * Butt Fusion
** Socket Fusion
† Polyvalve II™
(C-Style) Valves
Size (Inches) Size (Metric) Body Pieces Port End
Configuration		 Cv Kv Equivelant Feet
of Pipe		 Available SDRs
1/2 16-20 2 full † BF* or SF* 18 260 2 9.3
3/4 25 2 full † BF 25 361 3.2 9.3, 10, 11
1 32 2 standard † BF 40 577 3.8 9.3, 11, 13.5
1-1/4 40 2 standard † BF 45 649 9.6 9.3, 11, 13.5
2 55-63 3 full BF 175 2528 3.8 9.3, 11, 17
50-63 2 standard † BF 110 1586 9.6 9.3, 11, 17
3 90 3 full BF 390 5624 5.3 9.3, 11, 13.5, 17
90 3 standard BF 240 3461 14.1 9.3, 11, 13.5, 17
4 100-110 3 full BF 700 10094 5.8 9.3, 11, 13.5, 17
100-110 3 standard BF 400 5768 17.8 9.3, 11, 13.5, 17
6 150-160-180 3 full BF 1800 25957 6.1 9.3, 11, 13.5, 17
125-160 3 standard BF 900 12978 24.3 9.3, 11, 13.5, 17
8 225 2 full BF 3650 52633 5.5 11, 13.5, 17
225 3 standard BF 1350 19467 40.3 9.3, 11, 13.5, 17
12 315 3   BF 7000 73542 10.6 11, 13.5, 17

Dimension Data

Dimension Data
ANSI Valve Dimensions
 
Size Port A B C D E Weight
(lbs.)
1/2 full 10.0 3.4 4.8 2.8 0.50 1.2
3/4 full 10.0 3.4 4.8 2.8 0.75 1.2
1 standard 10.0 3.4 4.8 2.8 0.90 1.2
1-1/4 standard 10.0 3.4 4.8 2.8 0.90 1.2
2 full 14.7 6.4 9.1 4.2 1.82 3.8
standard 13.0 4.5 6.5 3.7 1.30 3.1
3 full 15.0 8.0 11.4 3.5 2.50 8.9
standard 12.8 6.4 9.1 3.6 1.95 4.5
4 full 20.0 10.4 15.0 3.1 3.62 19.5
standard 15.0 8.0 11.4 3.8 2.50 8.9
6 full 21.0 12.6 18.6 3.9 5.20 38.0
standard 20.0 10.4 15.0 5.3 3.62 23.0
8 full 69.8 12.5 19.9 24.0 6.30 98.0
standard 20.0 12.6 18.6 4.5 4.78 42.5
Gear Operated
8 full 69.8 14.8 22.2 24.0 6.30 134.0
12 full 83.8 17.5 27.7 30.0 9.91 305.0
Metric Valve Dimensions
 
Size Port A B C D E Weight
(kg)
16-20 full 254 86 122 71 12.7 0.5
25 full 254 86 122 71 19.1 0.5
32 standard 254 86 122 71 22.9 0.5
40 standard 254 86 122 71 22.9 0.5
55-63 full 373 164 231 106 46.2 1.7
50-63 standard 330 115 165 94 33.0 1.4
90 full 381 203 290 89 63.5 4.0
standard 325 164 231 91 48.0 2.0
100-110 full 508 264 381 77 91.9 8.8
standard 381 203 290 95 63.5 4.0
150-160
& 180		 full 533 320 472 99 132.1 17.2
125-160 standard 508 263 381 133 91.9 10.4
225 full 1773 318 504 610 160 44.5
standard 508 320 472 102 121.4 19.3
Gear Operated
225 full 1773 376 564 610 160 60.8
315 full 2129 443 704 762 251.7 138.3

Note: Valves are generally available in these metric sizes and may be available in other metric dimensions. Due to wall thickness considerations, SDRs in some sizes may not be available. Contact your Polyvalve representative for specific SDR availability.

Note: Polyvalve proudly offers pup lengths to customer specifications.