Key Properties of Polyurethane (PU)
• Super wear-resistant: 5-10 times that of ordinary rubber
• Acid and alkali resistant: Stable in weak acids and alkalis, sewage, and slurry environments
• High elasticity and tear resistance: Good sealing and not prone to cracking
• Hardness: Shore 85-95A, balancing wear resistance and sealing
• Temperature: Generally ≤ 90-120℃
Product Advantages
1. Superior Wear and Erosion Resistance: The entire flow channel is lined with PU, preventing direct contact between the medium and the metal valve body, resulting in an extremely long service life.
2. Anti-Stuck and Self-Cleaning: The gate valve has a scraper to remove material during opening and closing; the valve seat has a self-flushing function to prevent sedimentation.
3. Full Bore, Low Flow Resistance: When fully open, the gate valve retracts completely into the valve cavity, preventing flow obstruction and material accumulation.
4. Reliable Sealing, Bidirectional Sealing: Zero leakage in the forward direction, and can withstand 50% pressure in the reverse direction.
5. Easy Maintenance: The polyurethane bushing and gate valve can be replaced individually, resulting in low cost.
Applicable Media
• Slurry, tailings, coal slime, mud, slag slurry
• Ash, fly ash, sand-water mixtures, cement powder
• Sewage, sludge, pulp, fiber pulp
• Weak acids, weak alkalis, and salt-corroding slurries
