German made Rexroth proportional relief valve DBETX-1X/50G24-8NZ4M DBETX-1X/80G24-8NZ4M DBETX-1X/315G24-8NZ4M

The primary difference is the pressure setting range. The DBETX-1X/50G24-8NZ4M offers 0-50 bar, the /80G24-8NZ4M provides 0-80 bar, and the /315G24-8NZ4M covers 0-315 bar. All three models share identical mechanical dimensions, electrical interfaces (8NZ4M solenoid), and mounting configurations, but are calibrated for different pressure ranges to suit various system requirements. The choice depends on your maximum operating pressure needs.

The 8NZ4M configuration indicates a standard current solenoid with 0.8A maximum current. This differs from higher-current configurations like 25NZ4M (2.5A) or 37Z4M (3.7A) in several ways: lower power consumption (8W vs 40W), slower response time (<50 ms vs <30 ms), and reduced electromagnetic force. The 8NZ4M is more cost-effective but may not be suitable for applications requiring rapid dynamic response or handling high-viscosity fluids.

No, the DBETX-1X series with 8NZ4M configuration does not include integrated position feedback. These are open-loop control valves that rely on the external amplifier to drive the solenoid without spool position monitoring. If you require closed-loop control, position feedback, or diagnostic capabilities, you would need to consider the DBETBX series or other models with position sensor options.

Yes, but with important considerations. While the valve is rated for 315 bar pressure, the 8NZ4M solenoid has lower electromagnetic force compared to higher-current options. This means response times may be slower, and performance in high-viscosity fluids or demanding dynamic applications could be affected. For critical high-pressure applications, it's recommended to evaluate whether the 8NZ4M configuration meets your dynamic performance requirements or if a higher-current solenoid would be more appropriate.

These valves require a proportional amplifier that can provide 24V DC power supply and process the control signal (0-10V or 4-20mA). The amplifier must be compatible with the 8NZ4M solenoid configuration, meaning it should be capable of delivering up to 0.8A current. Ensure the amplifier's current output capability matches the solenoid requirements. The amplifier should also provide appropriate signal conditioning and protection features.

The standard models come with NBR seals, which are primarily compatible with mineral oils (HL, HLP). For water-glycol, HFC fluids, or other non-mineral oil fluids, special seal materials (such as FKM or EPDM) may be required. Before using with alternative fluids, consult the manufacturer's fluid compatibility guide or contact technical support to confirm seal material suitability. Using incompatible fluids may cause seal degradation and premature failure.