Maria Valve
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Knife gate valve is a linear-stroke, positive-sealing shut-off valve. Its core component is a flat gate with a sharp cutting edge, which moves perpendicular to the medium flow direction. It relies on the shearing action of the gate to cut off media containing particles, fibers, or viscous substances. With no conventional gate valve cavity, the valve features an ultra-thin structure and a full-bore flow path, specifically designed for clog-prone media such as slurry, pulp, slag, dust, and wastewater.
| Nominal Diameter | 50 ~ 1200mm (standard); 15 ~ 2000mm (customized) |
| Nominal Pressure | 0.6 / 1.0 / 1.6 / 2.5 MPa; 150LB / 10K |
| Applicable Temperature | Soft seal: -20℃ ~ 120℃ Metal seal (hard seal): -40℃ ~ 425℃ |
| Connection Standards | GB / JB / HG / ANSI / DIN / JIS |
| Test Standards | GB/T 13927 (Shell test: 1.5×PN; Seat test: 1.1×PN) |
| Leakage Class | Soft seal: Class VI (zero leakage); Hard seal: Class IV |
| Component | Material Options |
|---|---|
| Valve Body | Cast Iron (HT200/250), Carbon Steel (WCB), Stainless Steel (304/316/316L), Duplex Steel, Titanium Alloy |
| Gate Disc | Stainless Steel (304/316), Carbon Steel, Hardfaced Carbide Overlay |
| Seal | Soft: EPDM, NBR, Viton, PTFE; Hard: 304/316, Stellite, Hard Alloy |
| Stem | 2Cr13, 304, 316, Titanium Alloy |
Standard Warranty: 12 months.
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: Operation and maintenance training for your team is available.
