Direct Operated Servo-Proportional Valves

Series D936 and D937 - Direct Operated Valves (DOV) for flow control with analog interface

The 海角社区 D936 and D937 series valves are direct operated servo valves with integrated electronics and analog interface. The servo-proportional valves of the D936 and D937 series are driven by a single proportional solenoid, which moves the valve spool directly and eliminates the need for pilot oil. This design allows for 4/4-way operation and a 4th safe spool position. They are available in nominal sizes 03 (D936) and 05 (D937) in accordance with ISO 4401.

These servo-proportional valves were designed to offer high resistance to thermal stress and vibration. The compact design allows space saving system design and seamlessly integration into your machine. 听

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Directly driven by a proportional solenoid
4/4-way design including failsafe position reduces need for additional safety components
Fully hardened spool and bushing provides high accuracy and wear resistance
Electronics mechanically uncoupled from housing allows for high vibration resistance for longer service life and less machine downtime
Next-generation electronics with digital core and energy efficient components lead to low thermal stress and long electronics lifecycle
Optimized overlaps and clearances between spool and bushing deliver low internal leakage and high contamination resistance
Electronics placed on the solenoid delivers compact design for minimum installation space

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Specifications
听	D936	D937
Control Functions	Flow
Mounting Pattern	ISO 4401 Size 03 (NG6)	ISO 4401 Size 05 (NG10)
Hydraulic Data
Rated Flow at 鈭唒 35 bar (500 psi) per land	4 to 40 l/min听 (10.6 gpm)听	50 to 100 l/min (26.4 gpm)
Maximum Flow	75 l/min (19.8 gpm)	180 l/min (47 gpm)
Maximum Operating Pressure	Port P, A, B - 350 bar (5,000 psi)
	Port T - 250 bar (4,000 psi)
Step Response Time for 0 to 100% Step	11 ms	18 ms
Electrical Data
Supply Voltage	24 V_DC (18 to 32 V_DC)
Rated Signal Options	+/-10 V, +/-10 mA and 4 to 20 mA
Electrical Connectors	6+PE