Throttle reversing valves
Function: To ensure self-filling without overflowing the drill pipe with the drilling mud, preventing the cement slurry from moving into the drill column after it is being mounted and for placing the separation plugs during the pumping of the cement slurry into the column and pushing it into the space behind the drill column. The throttle valves are available for pipes Dout = 114-508 in accordance with GOST 632 with a thread: short triangular, trapezoidal (OTTM) and with high-tight connection (OTTG).
| Туре | Working pressure, MPa | Diameter (mm) | Height (mm) | Weight, kg |
| DƏK (ЦКОДМ)-114 | 25 | 133 | 313 | 11,8 |
| DƏK (ЦКОДМ)-114 ОТТГ | 25 | 340 | 13,1 | |
| DƏK (ЦКОДМ)-127 | 25 | 146 | 318 | 13.7 |
| DƏK (ЦКОДМ)-127 ОТТГ | 25 | 352 | 15,2 | |
| DƏK (ЦКОДМ)-140 | 25 | 159 | 360 | 17,8 |
| DƏK (ЦКОДМ)-140 ОТТГ | 25 | 395 | 19,3 | |
| DƏK (ЦКОДМ)-146 | 25 | 166 | 360 | 19,4 |
| DƏK (ЦКОДМ)-146 ОТТГ | 25 | 395 | 21,0 | |
| DƏK (ЦКОДМ)-168 | 25 | 188 | 360 | 19,4 |
| DƏK (ЦКОДМ)-168 ОТТГ | 25 | 395 | 26,1 | |
| DƏK (ЦКОДМ)-178 | 25 | 196 | 372 | 29,2 |
| DƏK (ЦКОДМ)-178 ОТТГ | 25 | 395 | 30,5 | |
| DƏK (ЦКОДМ)-194 | 25 | 216 | 380 | 34,0 |
| DƏK (ЦКОДМ)-194 ОТТГ | 25 | 395 | 35.2 | |
| DƏK (ЦКОДМ)-219 | 15 | 245 | 400 | 38,4 |
| DƏK (ЦКОДМ)-219 ОТТГ | 15 | 44,0 | ||
| DƏK (ЦКОДМ)-245 | 13 | 270 | 400 | 60,0 |
| DƏK (ЦКОДМ)-245 ОТТГ | 13 | 420 | 64,0 | |
| DƏK (ЦКОДМ)-299 | 10 | 324 | 75,9 | |
| DƏK (ЦКОДМ)-324 | 10 | 351 | 405 | 92,0 |
| DƏK (ЦКОДМ)-340 | 10 | 365 | 98.0 | |
| DƏK (ЦКОДМ)-406 | 7,5 | 432 | 445 | 121,0 |
| DƏK (ЦКОДМ)-473 | 7,5 | 508 | 175,0 | |
| DƏK (ЦКОДМ)-508 | 7,5 | 533 | 455 | 190,0 |
