Service Condition Guide of PTFE and Filled Grade PTFE Valve Components
Hindustan Nylons Manufacturers PTFE and Filled Grade PTFE valve components, and Service Condition Guide is exhibited below alongwith other materials for comparison.
(Hindustan Nylons does not produce Devlon, Peek and PPS Products)
| Virgin PTFE |
Virgin PTFE are besicely used as ball valve seat material with chemical compatibility the widest possible range of service Applications. |
| Color |
Density (g/cm³) |
Elongation (%) |
Tensile Strength (MPa) |
Contineous Working Temp (℃) |
| White |
2, 17 |
390 |
54 |
150 |
| Reinforced PTFE |
Reinforced PTFE, 15% glass reinforced PTFE, chemical resistance is compatible to virgin PTFE but with better cycle life and greater P-T rating, recommended to used in Class 150 and Class300 ball valve, limited use in Class600 ball valves with below NPS12 |
| Color |
Density (g/cm³) |
Hardness (Shore D) |
Compressive Strength (MPa) |
Contineous Working Temp (℃) |
| Off-White |
2, 1 |
76 |
68 |
180 |
| Carbon Fiber Filled PTFE |
Carbon Fiber Filled PTFE,25% Carbon Graphite with 75% TFE retain virtually all the chemical compatibility properties of virgin PTFE but with better cycle life than PTFE, typically used for Class600&below trunnion mounted ball valve. |
| Color |
Density (g/cm³) |
Hardness (Shore D) |
Compressive Strength (MPa) |
Contineous Working Temp (℃) |
| Black |
2, 23 |
68 |
60 |
200 |
| Nylon |
Nylon primarily used in high pressure ball valves upto Class2500 it can be used in high pressure oil, air and other gas systems except oxygen,it is not recommended for water. |
| Color |
Density (g/cm³) |
Hardness (Shore D) |
Water Absorption (%) |
Compressive Strength (MPa) |
Contineous Working Temp (℃) |
| White |
1, 2 |
65 |
3, 5 |
100 |
90 |
| Devlon |
Devlon is improved version of Nylon, inherit basic properties of Nylon however with higher temperature limit, ideal seat mate- rial for high pressure ball valves. |
| Color |
Density (g/cm³) |
Hardness (Shore D) |
Water Absorption (%) |
Compressive Strength (MPa) |
Contineous Working Temp (℃) |
| Bright Yellow |
1, 14 |
79 |
3 |
140 |
125 |
| PEEK |
Polyetheretherketone, excellently suitable for high pressure and temperature service, meanwhile offer very good corrosion resistance, with stable sealing in Class2500 ball valves. |
| Color |
Density (g/cm³) |
Hardness (Shore D) |
Compressive Strength (MPa) |
Contineous Working Temp (℃) |
| Sallow |
2, 29 |
85 |
118 |
260 |
| Color |
Density (g/cm³) |
Hardness (Shore D) |
Compressive Strength (MPa) |
Contineous Working Temp (℃) |
| Chocolate Brown |
2, 4 |
65 |
40 |
200 |
Values given just for reference. Please consult us for each particular application
Typical Metal Sealings:
- TCC-Tungsten Carbide Coating
- Nickle Base Alloy Spraying Welding like Inconel, Hastelloy, Moniel, etc
- Cobalt Base Alloy Spraying Welding-Stellite
Pressure / Temperature Chart:
Note: The values given are indicative and should be used at your own risk.
