| CENTER BARREL & CAP: | Carbon Steel per ASTM A53 or ASTM A 283 or Carbon Steel. |
| GLANDS: | Carbon Steel per AISI C1020. |
| BOLTS & NUTS: | Low Alloy Steel per ASTM A325, ASTM A563, and AWWA C111. |
| GASKET: | SBR per ASTM D2000. Suitable for mild acids, water, and salt media with a tempe- rature range of -40 °F to +200 °F. Optional materials available. |