EZ Series Resilient seated OS&Y gate valve is a wedge gate valve and Rising stem type, and suitable for use with water and neutral liquids (sewage).
| Parts | Material |
| Body | Cast iron,Ductile iron |
| Disc | Ductilie iron&EPDM |
| Stem | SS416,SS420,SS431 |
| Bonnet | Cast iron,Ductile iron |
| Stem nut | Bronze |
| Nominal pressure | PN10 | PN16 | |
| Test pressure | Shell | 1.5 Mpa | 2.4 Mpa |
| Sealing | 1.1 Mpa | 1.76 Mpa | |
1． Manual actuation
In most cases,resilient seated gate valve are operated by handwheel or a cap top using a T-key.TWS offer handwheel with the right dimension according to the DN and operating torque.Regarding cap tops,TWS products comply with the different standards;
2． Buried installations
One special case of manual actuation occurs when the the valve buried and the actuation has to be done from th surface;
3． Electrical actuation
For remote control,allow the final user to monitor the operations of the valves.
| Type | Size (mm) | L | D | D1 | b | N-d0 | H | D0 | Weight (kg) |
| RS | 50 | 178 | 165 | 125 | 19 | 4-Φ19 | 380 | 180 | 11/12 |
| 65 | 190 | 185 | 145 | 19 | 4-Φ19 | 440 | 180 | 14/15 | |
| 80 | 203 | 200 | 160 | 19 | 8-Φ19 | 540 | 200 | 24/25 | |
| 100 | 229 | 220 | 180 | 19 | 8-Φ19 | 620 | 200 | 26/27 | |
| 125 | 254 | 250 | 210 | 19 | 8-Φ19 | 660 | 250 | 35/37 | |
| 150 | 267 | 285 | 240 | 19 | 8-Φ23 | 790 | 280 | 44/46 | |
| 200 | 292 | 340 | 295 | 20 | 8-Φ23/12-Φ23 | 1040 | 300 | 80/84 | |
| 250 | 330 | 395/405 | 350/355 | 22 | 12-Φ23/12-Φ28 | 1190 | 360 | 116/133 | |
| 300 | 356 | 445/460 | 400/410 | 24.5 | 12-Φ23/12-Φ28 | 1380 | 400 | 156/180 |