Counterbalance Valve C1200040361 is a critical hydraulic safety control component exclusively designed for Hydraulic Rock Drills. It excels in harsh mining environments—for instance, underground hard rock mines, high-altitude quarries, tunnel construction sites and heavy-load drilling areas.
These settings pose unique challenges for counterbalance valves: extreme hydraulic pressure spikes, sudden load changes, vibration (up to 100G), abrasive rock dust, and temperature swings. These issues often cause valve leakage, reverse flow, or pressure relief failure, leading to drill cylinder collapse, equipment damage, or safety hazards. Yet, Counterbalance Valve C1200040361 maintains uncompromised performance under all these harsh conditions. In fact, it directly addresses five core pain points that plague mining operations.
First, its forged carbon steel body + stainless steel spool withstands 50MPa working pressure and 100MPa burst pressure. This eliminates valve rupture or leakage caused by pressure spikes in drill hydraulic systems. Second, the 2:1 pilot ratio ensures precise load holding for drill cylinders. Consequently, it prevents sudden load drop and cylinder drift during drilling, enhancing operational safety. Third, the anti-reverse flow design blocks hydraulic oil backflow when the drill stops. Likewise, this maintains cylinder position and avoids equipment damage from unexpected movement.
Fourth, the shock-resistant structural design (reinforced spring + dampened spool) withstands 100G vibration from drill operation. Above all, this prevents spool jamming and ensures reliable pressure relief even in high-vibration environments. Fifth, the wide temperature adaptability (-30°C~120°C) ensures stable performance in cold high-altitude mines and hot underground drilling sites. On top of that, the IP65 dustproof/waterproof rating blocks rock dust and water ingress, protecting internal components from contamination and corrosion.
Unlike ordinary industrial counterbalance valves, this model is engineered for Hydraulic Rock Drills’ dynamic working conditions. To elaborate, the 2:1 pilot ratio matches drill cylinder load requirements, while the shock-resistant design adapts to mining vibration. Thus, it outperforms generic valves in service life by 140%, significantly reducing replacement-related downtime.
Our manufacturing team uses precision forging + CNC machining technology for the valve body and spool. Furthermore, each unit undergoes 50MPa pressure testing (30 minutes) and anti-reverse flow verification. Additionally, the valve undergoes 100,000-cycle pressure relief trials to ensure no performance degradation.
Notably, it adapts to extreme temperatures from -30°C (high-altitude cold regions) to 120°C (high-load drill hydraulic systems). Moreover, it passes 400-hour salt spray tests with no rust or corrosion. In addition, it endures 5,000-hour hydraulic oil immersion trials without seal aging or leakage.
The valve’s standard SAE flange connection integrates seamlessly with mainstream Hydraulic Rock Drill hydraulic systems. It requires no modifications to existing pipelines or control panels for installation. As a result, maintenance teams can complete replacement in 20 minutes using standard tools.
Our quality team conducts strict ISO 9001 verification for every unit. We perform pressure resistance tests, load holding inspections, shock resistance trials and anti-reverse flow verification. Importantly, it complies with ISO 6162-1 international hydraulic valve standards.
Compatible with top Hydraulic Rock Drill brands, it serves as a direct OEM replacement. Thanks to its reliability, it reduces valve-related failure rates by 95%. Additionally, backed by a 12-month warranty, it lowers annual maintenance costs by 60%.
It not only ensures safe load holding and pressure relief for drill hydraulic systems but also extends the service life of drill cylinders by 85%. Overall, Counterbalance Valve C1200040361 delivers cost-effective, safety-focused performance for long-term mining operations. Beyond that, it minimizes safety hazards caused by valve failure, maximizing operational efficiency and worker protection.
