Characteristics of pneumatic knife gate valve
l. The knife gate valve is made of non rising stem and rising stem (non rising stem) DN50~900mm and rising stem DN50~900mm according to different diameters. The full circular DC channel is designed without slag and blockage. The bottom of the blade is processed into a blade, which has the cutting function of fiber, pulp, wood pulp and other soft materials, and has a good switching effect. A hard polytetrafluoroethylene mud scraper is installed on the upper end of the cutter plate, which can prevent dust, gravel and other abrasives from entering the stuffing box, and can significantly improve the service life of the cutter plate. The valve plate is made of stainless steel, and fine grinding and polishing treatment can obtain better sealing effect. Compact design, small floor area, light weight, low price, convenient installation, complete wear and blockage prevention measures, convenient maintenance, convenient use, long service life, and optional drive device.
2. The valve body and filler culvert are precision cast, and the whole body is flange cast. 304.316.316L.WCB.2Crl3 can be selected according to the user's needs. The PTFE seal ring is used to strengthen the PTFE material, which is corrosion resistant, wear-resistant and slag free.
3. The valve plate has 5 supporting points, so that the valve plate has good self centering. When the valve is closed and subjected to back pressure, the valve plate will not shift.
4. Knife shaped slurry gate valve can be equipped with handwheel, manual zipper, spur gear drive, bevel gear drive, pneumatic and electric drive.
5. V-shaped, triangular and pentagonal channels can be made in the knife shaped slurry gate valve. V-shaped ram can be used as regulating control.
6. The connection form of knife shaped slurry gate valve is clamp type, flange lug type seal, metal hard seal, metal to polyamine grease, PTFE soft seal reinforcement.
7. Applicable media: gold ore powder, tailings, pulp, wood pulp, fiber, dust, chemical treatment sewage, sedimentation tank, ore, slag, coal slurry, asphalt, silo outlet, fruit, grain, cement slurry, slaughterhouse wastewater, etc.
8. Operating temperature:
Soft seal (PTFE): - 40 ℃～ 180 ℃
Carbon steel: - 29 ℃～ 425 ℃
Stainless steel: - 40 ℃～ 600 ℃
Chromium molybdenum vanadium steel: ≤ 550 ℃
Working pressure 1.6.6 MPa
