The Duplomatic CRQ series consists of pilot-operated pressure relief valves in cartridge format, designed for block or manifold applications in hydraulic systems. Here's a detailed overview:

 Technical Specifications

• Type: Pilot-operated pressure control valve
• Mounting Style: Screw-in cartridge
• Cavity Type: D-10 C
• Max Operating Pressure: 350 bar
• Max Flow Rate: 100 l/min
• Pressure Adjustment: Socket hex screw or optional knob
• Pressure Ranges:
  • CRQ3: up to 70 bar
  • CRQ4: up to 140 bar
  • CRQ5: up to 210 bar
  • CRQ6: up to 350 bar
• Seal Options: NBR (standard), Viton (for special fluids)