Kawasaki Original Relief Valves
2 month ago
Product details
Kawasaki Original Relief Valves
Models: KMX15RA, KMX15RB, KMX32NA, KMX32N
(Kyocera Genuine Hydraulic Pressure Relief Valves)
1. Product Overview
Kawasaki Original Relief Valves are precision-engineered pressure control components designed for hydraulic systems in construction machinery, industrial equipment, and marine applications. Their primary function is to limit system maximum pressure, preventing pipeline ruptures, seal failures, or equipment damage caused by overloads.
• Brand Positioning: Manufactured by Kawasaki Heavy Industries’ Hydraulic Division, compliant with Japanese Industrial Standards (JIS) and international ISO certifications.
• Design Features:
• High-precision pressure control (±2% accuracy).
• Strong contamination resistance (suitable for NAS 1638 Class 9 hydraulic fluids).
• Modular design for seamless integration with Kawasaki hydraulic pumps and motors.
2. Model Classification & Functional Comparison
【表格】
Model Type Max Pressure Flow Rate Core Functions
KMX15RA Direct-Acting Relief Valve 210 bar (3,045 psi) 15 L/min (4 GPM) Basic pressure protection, compact design
KMX15RB Direct-Acting Relief Valve (Adjustable) 210 bar (3,045 psi) 15 L/min (4 GPM) Manual pressure adjustment for testing/debugging
KMX32NA Pilot-Operated Relief Valve 350 bar (5,075 psi) 32 L/min (8.5 GPM) Remote pressure control, supports solenoid valve linkage
KMX32N Pilot-Operated Relief Valve (Standard) 350 bar (5,075 psi) 32 L/min (8.5 GPM) Balanced design reduces pressure fluctuations
Model Naming Convention:
• KMX: Kawasaki hydraulic valve series code.
• 15/32: Flow rating (L/min).
• A/B: Functional variants (e.g., adjustable).
• N: Pilot-operated structure identifier.
3. Key Technical Specifications
【表格】
Parameter KMX15RA/KMX15RB KMX32NA/KMX32N
Response Time ≤10 ms (Direct-Acting) ≤8 ms (Pilot-Operated)
Pressure Adjustment Range 10–210 bar 20–350 bar
Leakage Rate ≤1 ml/min (@210 bar) ≤3 ml/min (@350 bar)
Operating Temp -20°C to +80°C -20°C to +100°C
Materials Carbon steel body + stainless steel spring Carbon steel body + hardened alloy valve seat
4. Core Advantages
1. High Reliability:
• Passed 1 million pressure cycle tests (per ISO 10766).
• Laser-welded valve core and seat eliminate loosening risks.
2. Energy Efficiency:
• Direct-acting design (KMX15 series) reduces pressure loss to ≤0.5 bar, cutting energy consumption.
• Pilot-operated design (KMX32 series) supports staged pressure control for multi-actuator systems.
3. Compatibility:
• Port sizes comply with SAE J518 standards, enabling direct replacement of Rexroth, Parker, and other equivalent valves.
• Supports mineral oils, synthetic hydraulic fluids, and biodegradable oils (with special seals).
5. Typical Applications
【表格】
Industry Equipment Type Specific Use Case
Construction Excavators, Loaders Main pump outlet pressure protection
Industrial Injection Molding Machines Clamping force pressure control
Marine Deck Cranes, Anchor Winches Wave compensation pressure stabilization
Energy Wind Turbine Yaw Systems Hydraulic brake pressure regulation
6. Installation & Maintenance Guidelines
1. Mounting Requirements:
• Vertical installation: Ensure relief port faces downward to prevent air entrapment.
• Horizontal installation: Maintain ≥5° tilt for drainage.
2. Pressure Setting:
• Gradually adjust to 90% of system rated pressure using a pressure tester (reserve safety margin).
• Avoid frequent adjustments under high pressure to prevent spring fatigue.
3. Maintenance Schedule:
• Replace filters every 2,000 hours and test fluid cleanliness (NAS grade).
• Disassemble and inspect valve cores every 5,000 hours (for high-dust environments).
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