High-Pressure Hydraulic Valve for Rock Drills This valve is engineered to regulate fluid flow in hydraulic rock drill systems, ensuring precise pressure control and reliable operation in abrasive mining environments. Constructed from 316 stainless steel, it resists corrosion and withstands extreme pressure surges, making it ideal for heavy-duty drilling applications.
Key Performance Attributes
Material & Durability:
316 stainless steel (ASTM A276) provides superior corrosion resistance compared to 304 stainless, validated through 1000-hour salt spray testing (ASTM B117). This ensures longevity in damp underground mines and exposure to mineral-rich fluids .
FKM (Viton) seals maintain integrity across the -20°C to +120°C temperature range, preventing leakage even under thermal expansion/contraction .
Precision Control:
Rated for 35MPa maximum working pressure, it regulates flow with ±0.5MPa accuracy, protecting hydraulic components from overpressure damage. The G1/2 BSPP ports (ISO 228-1) ensure compatibility with standard hydraulic hoses and fittings .
Manual override function allows emergency operation during power failures, while the spring return mechanism ensures fail-safe closure, reducing downtime in critical scenarios.
Operational Reliability:
Designed for 100,000 cycles under rated conditions, it handles repetitive on/off cycles in rock drill operation. The valve’s compact design (110mm length) fits into tight equipment enclosures without compromising performance .
Applications
Hydraulic Rock Drills: Controls flow in impact mechanisms, feed cylinders, and rotary drives.
Mining Equipment: Compatible with tunneling machines, quarry drills, and mineral exploration rigs requiring high-pressure fluid regulation.
