A na-emepụta ahụ valvụ ahụ nke ọma iji wepụ ntụpọ dị n'ime ya; Ngwugwu PTFE/graphite na-eme ka ọrụ dị ogologo ma ọ bụrụ na okpomọkụ dị elu na nrụgide dị elu. A na-agwọ akụkụ dị n'ime ya niile megide ire ere, dakọtara na mmiri na-emebi emebi, ikuku a na-agbakọ na ihe na-eme ka mmanụ dị n'ime ya.
| 1/8 | 0.13" | DN6 | 9.5mm | 8.8mm | 0.2mm |
| 1/4 | 0.26" | DN8 | 12.5mm | 11.5mm | 0.3mm |
| 3/8 | 0.39" | DN10 | 16.2mm | 15.3mm | 0.3mm |
| 1/2 | 0.52″ | DN15 | 20.3mm | 19.5mm | 0.3mm |
| 3/4 | 0.65″ | DN20 | 25.7mm | 24mm | 0.5mm |
| 1 | 1.31" | DN25 | 32.5mm | 30.5mm | 0.5mm |
| 1-1/4 | 1.57" | DN32 | 41.3mm | 39.5mm | 0.5mm |
| 1-1/2 | 1.96" | DN40 | 47.8mm | 46.3mm | 0.5mm |
| 2 | 2.62" | DN50 | 59.6mm | 56.6mm | 0.5mm |