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2658012196
Epiroc
2658012196
Hello, Mine Owners and Maintenance Chiefs! I am the supplier who specializes in solving problems like "runaway pressure," "jerky movements," and "pump strain." Today, I’m recommending a "smart component that makes your equipment intelligent"—the Electric Proportional Relief Valve.
Anyone in mining knows equipment can't operate with a "one-track mind." Sometimes drilling hard rock requires maximum pressure; other times, lifting delicate equipment requires easing off. Adjusting pressure manually means stopping, depressurizing, and twisting knobs—inefficient and inaccurate. Many cheap proportional valves look the part but use ordinary cast iron bodies that deform and leak under high pressure. Their coils use aluminum wire, overheat quickly, and burn out. Our valve is specifically engineered for "precision violence" in mining drills, shield machines, and large hydraulic systems. It doesn't just handle pressure; it obeys commands and reacts fast. Choose us to install a "smart nerve" in your hydraulic system, allowing power to be applied smoothly and precisely.
40Cr Alloy Steel Forged Body: No Fear of High Pressure:
The proportional valve is the safety sentinel of the hydraulic system, bearing peak pressures.
Material: We use 40Cr alloy steel, integrally forged. This material offers extreme strength, several times harder than ordinary cast iron. At 35MPa or 40MPa, the valve body remains unmoved—no leakage, no rupture.
Corrosion Protection: Finished with black spray painting. This coating has extreme adhesion, resisting oil and acid/alkali corrosion. Even submerged in emulsions and engine oil, it won't rust for years.
Copper Alloy Contacts + NBR Seals: Durable and Leak-Free:
Electrical Connection: Terminals are copper alloy. This ensures excellent conductivity, low heat generation, and minimal contact resistance. Signal transmission is stable, preventing pressure fluctuations caused by poor contact.
Sealing System: Valve spool seals use premium Nitrile Rubber (NBR). This material is oil-resistant, wear-resistant, and aging-resistant. Whether you use ISO 46 or ISO 68 oil, it seals tight with zero internal leakage. Spool movement is smooth without sticking.
≤50ms Ultra-Fast Response: Obeys Instantly:
Many proportional valves react slowly, causing lag in equipment movement.
High Frequency: Our valve integrates a high-precision proportional control module. From receiving the signal to pressure output, response time is ≤50 milliseconds—almost faster than a blink. When a drill hits hard rock and system pressure spikes, it reacts instantly to relieve pressure, protecting the pump and lines from strain.
Precision Control: Pressure output linearity is excellent. Whatever current you input, the pressure corresponds precisely. Operators can gently adjust knobs in the cab for smooth, refined movements, not just violent jerks.
Dual Signal Input: Highly Compatible:
Control Signals: Supports 4-20mA current signals and 0-10V voltage signals. This is the standard language of industrial control. Whether you run a domestic PLC or an imported controller, it understands and connects easily. Installation and commissioning are simple, requiring no complex programming.
Parameter | Specification |
|---|---|
Product Name | Valve |
Core Materials | 40Cr Alloy Steel Forged Body + Copper Alloy Coil + NBR Seals |
Working Pressure | Up to 35MPa (Mining Duty) |
Response Time | ≤50ms (Ultra-Fast Reaction) |
Control Signals | 4-20mA / 0-10V (Industrial Standard) |
Typical Applications | Drill Feed Pressure Control, Breaker Impact Adjustment, System Overload Protection |
Mining Drills: Controlling feed pressure to auto-adjust based on rock hardness, preventing jams and broken rods.
Excavators: Regulating breaker impact force for gentle tapping or heavy hitting, protecting the tool.
Injection Molding/Die Casting: Precisely controlling clamping force to ensure product quality and prevent flash.
Hydraulic Lifts: Achieving smooth, stepless lifting without cargo swaying.
Full Range, Ready to Ship: Whether you run Bosch Rexroth, Parker, Atos, or domestic systems, we have the corresponding ready-made proportional valves. Just provide your old part number or electrical specs, and we ship immediately.
Fast Reaction, Accurate Pressure: We guarantee our valves react fast and control pressure precisely. If it lags or fluctuates after installation, we replace it.
Value for Money: We don't sell the cheapest, because they fail and burn out, causing headaches. We sell the most stable. Do the math: using our valves protects your expensive main pumps and cylinders, saving repair costs that far exceed the price.
A Quick Tip for the Mechanics:
Brothers, installing this valve is precise and technical work.
Cleanliness First. Proportional valves hate dirt. Before installation, flush the valve block ports and hydraulic lines thoroughly. Even a sesame-seed-sized metal shard can jam the spool, causing pressure runaway.
Shielded Signal Wire. When connecting control wires, use shielded twisted pair. Never bundle it with high-power motor cables; the interference will cause pressure jitter.
Bleed Air. After installing the new valve, bleed air from the system. Air is compressible, causing pressure instability and valve squealing.
Energize Safely. Don't energize the valve coil with load pressure before it's mounted. It can burn out the coil. Work safely and go home in one piece!
Hello, Mine Owners and Maintenance Chiefs! I am the supplier who specializes in solving problems like "runaway pressure," "jerky movements," and "pump strain." Today, I’m recommending a "smart component that makes your equipment intelligent"—the Electric Proportional Relief Valve.
Anyone in mining knows equipment can't operate with a "one-track mind." Sometimes drilling hard rock requires maximum pressure; other times, lifting delicate equipment requires easing off. Adjusting pressure manually means stopping, depressurizing, and twisting knobs—inefficient and inaccurate. Many cheap proportional valves look the part but use ordinary cast iron bodies that deform and leak under high pressure. Their coils use aluminum wire, overheat quickly, and burn out. Our valve is specifically engineered for "precision violence" in mining drills, shield machines, and large hydraulic systems. It doesn't just handle pressure; it obeys commands and reacts fast. Choose us to install a "smart nerve" in your hydraulic system, allowing power to be applied smoothly and precisely.
40Cr Alloy Steel Forged Body: No Fear of High Pressure:
The proportional valve is the safety sentinel of the hydraulic system, bearing peak pressures.
Material: We use 40Cr alloy steel, integrally forged. This material offers extreme strength, several times harder than ordinary cast iron. At 35MPa or 40MPa, the valve body remains unmoved—no leakage, no rupture.
Corrosion Protection: Finished with black spray painting. This coating has extreme adhesion, resisting oil and acid/alkali corrosion. Even submerged in emulsions and engine oil, it won't rust for years.
Copper Alloy Contacts + NBR Seals: Durable and Leak-Free:
Electrical Connection: Terminals are copper alloy. This ensures excellent conductivity, low heat generation, and minimal contact resistance. Signal transmission is stable, preventing pressure fluctuations caused by poor contact.
Sealing System: Valve spool seals use premium Nitrile Rubber (NBR). This material is oil-resistant, wear-resistant, and aging-resistant. Whether you use ISO 46 or ISO 68 oil, it seals tight with zero internal leakage. Spool movement is smooth without sticking.
≤50ms Ultra-Fast Response: Obeys Instantly:
Many proportional valves react slowly, causing lag in equipment movement.
High Frequency: Our valve integrates a high-precision proportional control module. From receiving the signal to pressure output, response time is ≤50 milliseconds—almost faster than a blink. When a drill hits hard rock and system pressure spikes, it reacts instantly to relieve pressure, protecting the pump and lines from strain.
Precision Control: Pressure output linearity is excellent. Whatever current you input, the pressure corresponds precisely. Operators can gently adjust knobs in the cab for smooth, refined movements, not just violent jerks.
Dual Signal Input: Highly Compatible:
Control Signals: Supports 4-20mA current signals and 0-10V voltage signals. This is the standard language of industrial control. Whether you run a domestic PLC or an imported controller, it understands and connects easily. Installation and commissioning are simple, requiring no complex programming.
Parameter | Specification |
|---|---|
Product Name | Pilot Operated Proportional Relief Valve / Electro-Hydraulic Proportional Valve |
Core Materials | 40Cr Alloy Steel Forged Body + Copper Alloy Coil + NBR Seals |
Working Pressure | Up to 35MPa (Mining Duty) |
Response Time | ≤50ms (Ultra-Fast Reaction) |
Control Signals | 4-20mA / 0-10V (Industrial Standard) |
Typical Applications | Drill Feed Pressure Control, Breaker Impact Adjustment, System Overload Protection |
Mining Drills: Controlling feed pressure to auto-adjust based on rock hardness, preventing jams and broken rods.
Excavators: Regulating breaker impact force for gentle tapping or heavy hitting, protecting the tool.
Injection Molding/Die Casting: Precisely controlling clamping force to ensure product quality and prevent flash.
Hydraulic Lifts: Achieving smooth, stepless lifting without cargo swaying.
Fast Reaction, Accurate Pressure: We guarantee our valves react fast and control pressure precisely. If it lags or fluctuates after installation, we replace it.
Value for Money: We don't sell the cheapest, because they fail and burn out, causing headaches. We sell the most stable. Do the math: using our valves protects your expensive main pumps and cylinders, saving repair costs that far exceed the price.
A Quick Tip for the Mechanics:
Brothers, installing this valve is precise and technical work.
Cleanliness First. Proportional valves hate dirt. Before installation, flush the valve block ports and hydraulic lines thoroughly. Even a sesame-seed-sized metal shard can jam the spool, causing pressure runaway.
Shielded Signal Wire. When connecting control wires, use shielded twisted pair. Never bundle it with high-power motor cables; the interference will cause pressure jitter.
Bleed Air. After installing the new valve, bleed air from the system. Air is compressible, causing pressure instability and valve squealing.
Energize Safely. Don't energize the valve coil with load pressure before it's mounted. It can burn out the coil. Work safely and go home in one piece!
