Our NPT Malleable Black Iron fittings are made with care and attention to detail. Reduced parting lines and smoother edges result in better fluid flow. By using a low
temperature galvanizing process the coating is more durable which means a longer
lasting fitting. All Fittings are 100% Pressure Tested to 300# Class.
- Material - ASTM A 197 - Cuppla Malleable Iron.
- Pressure - Saturated steam: 150 PSI @ 350°F & Max pressure 300 PSI @ 150°F
- Temperature range -20 - 350°F
°F |
Class 150 PSIG |
Sizes 1/4" - 1" 300# |
Sizes 1-1/4" - 2" 300# |
Sizes 2-1/4" - 3" 300# |
150 |
300 |
2000 |
1500 |
1000 |
200 |
265 |
1785 |
1350 |
910 |
150 |
225 |
1575 |
1200 |
825 |
150 |
185 |
1360 |
1050 |
735 |
200 |
150 |
1150 |
900 |
650 |
* Permissible for service temperature up to 366 °F, reflecting the temperature of saturated steam at 150psig. |