Bi-Directional seal knife gate valve high performance industrial valve for water treatment wastewater management
Bi-DIRECTIONAL
SEAL KNIFE GATE VALVE
Suitable for tap water, sewage, water treatment
Bi-directional sealing, improve sealing
Easy to replace, long service life
Achieve zero leaks!
Bi-Directional seal knife gate valve / double sealing knife gate valve is mainly used in waterworks, sewage pipes, municipal drainage projects, fire pipeline projects, and industrial pipelines on the minor non-corrosive liquid, gas, used for media and prevent media backflow protection devices.
-Product Display-
Knife gate valve manufacturers & 20 years of production experience
-Features-
Electric knife gate valve factory & Strong technical support
◆Innovative Sealing Design
Upgraded from traditional grooved rubber strips, the valve body now uses elastic rubber encapsulation instead of groove-mounted seals. This eliminates the difficulty of replacing worn-out seals by integrating the seal into the valve body structure.
◆Field-Replaceable Sealing System
When seals wear out, on-site replacement is possible with tool-free installation/dismantling design. Easy maintenance minimizes production downtime and ensures quick turnaround.
◆Bi-Directional Double-Layer Sealing
◆Compact Design & Stable Operation Across Pressures
Small installation space, low working pressure, high pressure ram no vibration, no noise.
◆Straight-Through Channel with Minimal Flow Resistance
| Nominal diameter | DN200-2000 | |
| Nominal Pressure | 0.4~1.0 | |
| Test | Seal | PNx1.1 |
| pressure | Strength | PNx1.5 |
| Working Pressure(MPa) | ≤1.0xPN | |
| Medium temperature(°C) | -23~100°C | |
| Applicable medium | Water | |
| No. | Name | Material | Quantity |
| 1 | Body | Ductile Iron | 1 |
| 2 | Bolt | Stainless steel | 6-20 |
| 3 | Closures | Ductile Iron | 1 |
| 4 | Gate | 304Stainless steel | 1 |
| 5 | Shaft nut | Copper | 1 |
| 6 | Axis | 2Cr13 | 1 |
| 7 | Seal | NBR | 1 |
| 8 | Bolts and nuts | 20#Galvanization | 20 |
| 9 | Body superstructure | WCB Ductile Iron | 1 |
| 10 | Packing | Flexible graphite | 1 |
| 11 | Gland | WCB Ductile Iron | 1 |
| 12 | Bracket | WCB Ductile Iron | 1 |
| 13 | Transmission bearings | 25# | 1 |
| 14 | Bearing gland | WCB Ductile Iron | 2 |
| 15 | Connecting bolts | 304Stainless steel | 1 |
| 16 | Electric devices | Configuration according to site requirements | 1 |
| DN | L | D | D1 | D2 | Z-φN | H | H1 | weight |
| 200 | 164 | 340 | 295 | 265 | 8-22 | 850 | 472 | 110 |
| 250 | 164 | 395 | 350 | 320 | 12-22 | 930 | 680 | 130 |
| 300 | 164 | 445 | 400 | 370 | 12-22 | 1010 | 877 | 162 |
| 400 | 170 | 565 | 515 | 482 | 16-26 | 1187 | 927 | 274 |
| 500 | 180 | 670 | 620 | 585 | 20-26 | 1450 | 1030 | 408 |
| 600 | 180 | 780 | 725 | 685 | 20-30 | 1716 | 1080 | 535 |
| 800 | 188 | 1015 | 950 | 905 | 24-34 | 2185 | 1432 | 833 |
| 1000 | 198 | 1230 | 1160 | 1110 | 28-36 | 2705 | 1765 | 1460 |
| 1200 | 218 | 1455 | 1380 | 1330 | 32-39 | 3180 | 2093 | 2259 |
| 1600 | 254 | 1915 | 1820 | 1760 | 40-48 | 4037 | 2720 | 3400 |
| 1800 | 276 | 2115 | 2020 | 1960 | 44-48 | 4550 | 3052 | 4500 |
| 2000 | 320 | 2325 | 2230 | 2150 | 48-48 | 5010 | 3384 | 5700 |
Big size knife gate valve，accessibility control with remote control, remote location can also display and remote centralized control in accordance with the requirements of the user.
