R900596814 DR30-5-5X/315YM Stacked pressure reducing valve hydraulic valve Rexroth

Frequently Asked Questions (FAQ) for DR 30-5-5X/315YM (Order Code: R900596814)

Q1: What is the main function and key feature of this valve?

A:​ It is a high-flow, high-pressure proportional pressure reducing valve. Its primary function is to provide electronically controlled, stable lower pressure in a high-power hydraulic circuit. Its key feature is the 315 bar maximum reduced pressure, which is the highest standard setting in the DR series, making it suitable for demanding high-force applications.

Q2: How does the 315YM model differ from the 200YM and 100Y models in the same DR 30 size?

A:​ The main difference is the maximum controllable output pressure:

• 315YM:​ Up to 315 bar (this model)

• 200YM:​ Up to 200 bar

• 100Y:​ Up to 100 bar, and uses a different solenoid type requiring an external amplifier.

  All share the same NG30 flow capacity (~400 l/min) and 315 bar maximum housing pressure rating.

Q3: What does the 315 bar pressure rating for both "Reduced Pressure" and "Operating Pressure" mean?

A:​ It means this valve is designed for full-pressure applications.

• The inlet/system pressure (P​ port) can be up to 315 bar.

• The controlled, reduced output pressure at the work ports (A/B) can also be adjusted all the way up to 315 bar.

  This is used when the sub-circuit requires the same high pressure as the main system but needs to be controlled independently and precisely.

Q4: How is the valve controlled? What does the "YM" suffix indicate?

A:​ The "YM"​ suffix indicates a proportional solenoid with integrated On-Board Electronics (OBE). It is controlled by a standard PWM signal (typically 24V DC), which simplifies wiring as it can connect directly to a PLC's PWM output without an external analog amplifier.