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{"title":"R901411433 4WRPEH10C4B100L-3X\/M\/24A1 German Rexroth hydraulic proportional valve","imgUrl":"https:\/\/img.chinax.com\/nimg\/68\/a4\/8c3461bc6f9bc81e09e96d98f2fa-200x200-1\/r901411433_4wrpeh10c4b100l_3x_2fm_2f24a1_german_rexroth_hydraulic_proportional_valve.jpg","attrs":{"Brand Name":"Rexroth","Model Number":"R901411433 4WRPEH10C4B100L-3X\/M\/24A1","Certification":"ISO","Place of Origin":"German"}}
{"title":"R900549534 4WE6HA6X\/EG24N9K4 Rexroth electromagnetic directional valve","imgUrl":"https:\/\/img.chinax.com\/nimg\/7e\/56\/4b1b49ff95486c1c15d9c0050144-200x200-1\/r900549534_4we6ha6x_2feg24n9k4_rexroth_electromagnetic_directional_valve.jpg","attrs":{"Brand Name":"Rexroth","Model Number":"4WE6HA6X\/EG24N9K4","Certification":"ISO","Place of Origin":"China"}}
{"title":"R901507310 4WRPEH10C3B100L-3X\/M\/24F1 Proportional directional valve from Rexroth","imgUrl":"https:\/\/img.chinax.com\/nimg\/c8\/a3\/f42def7c61c59509f011c5e03e46-200x200-1\/r901507310_4wrpeh10c3b100l_3x_2fm_2f24f1_proportional_directional_valve_from_rexroth_2c_germany.jpg","attrs":{"Brand Name":"Rexroth","Model Number":"R901507310 4WRPEH10C3B100L-3X\/M\/24F1","Certification":"ISO","Place of Origin":"Germany"}}
6 - sandwich mounting per ISO 5781 / NG6 (DIN 24340 Form E)
Function
Reduces pressure in secondary circuit to set value; 3-way action (excess pressure dumped via external drain)
Adjustment Type
DA2 = Rotary hand knob with protective cap (hand-adjustable, no tool)
Component Series
4X (series 40-49, dimensionally interchangeable)
Max. Adjustable Reduced Pressure
150 bar (adjustment range typically 4-150 bar)
Max. Operating Pressure (Primary P-port)
315 bar
Max. Operating Pressure (Secondary A/B port)
315 bar
Max. Flow Rate (Qmax)
approx. 60 L/min (Size 6 ZDR)
Pilot Oil Drain
Y = External pilot drain (separate Y-port to tank)
Seal Material
M = FKM (Viton) - specified by "M" suffix in type code / ordering data
Hydraulic Fluid
Mineral oil HL, HLP; HEES, HETG (bio-oils); HFC (with NBR - FKM also acceptable for HFC short-term); NOT for HFD(R) without special confirmation
Fluid Temperature Range
-20 °C to +90 °C (FKM seals - wider than NBR)
Viscosity Range
10-800 mm²/s
Weight (approx.)
1.7 kg
Body Material
Steel / cast iron, zinc-plated
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Frequently Asked Questions
Q1: Is ZDR a relief valve?
No. A relief valve (DB/DBD) limits upstream/system pressure; a pressure reducing valve (ZDR) maintains a lower, constant pressure in a downstream (secondary) circuit. If primary (inlet) pressure drops below the set reduced pressure, the ZDR opens fully and passes flow unregulated.
Q2: What does "DA2 /150YM" mean?
DA2 = NG6 sandwich, rotary hand knob with cap (hand-adjustable)
/150 = spring stage, max. adjustable reduced pressure = 150 bar (low-pressure stage; other stages: /75, /210, /315)
Y = external pilot drain - pilot oil returns via separate Y-port to tank
M = FKM (Viton) seal material
Q3: How do I adjust the reduced pressure?
With the secondary circuit under flow, lift/remove the cap and turn the rotary knob clockwise to increase, counterclockwise to decrease. Verify with a pressure gauge at the secondary port - the knob has no calibrated scale. Factory preset is typically near minimum.
Q4: How is the valve mounted?
As a sandwich (stackable) valve between a directional control valve and the NG6 subplate. Uses NG6 DIN 24340 Form E / ISO 5781 bolt pattern. Sandwich port IDs: P = primary (high pressure from pump), A (or B) = reduced secondary pressure to actuator, T = tank return, Y = external pilot drain to tank (must be connected!).
Q5: Why use the "Y" (external drain) version?
If the T-line in the valve stack has >2-3 bar backpressure, an internally drained ZDR's set pressure will increase by the amount of T-backpressure. The Y-version isolates the pilot from T, keeping the set reduced pressure stable. Always plumb Y separately to tank if T-backpressure exists.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Total Annual:
1 million-10 millon
Employee Number:
>50
Ecer Certification:
Verified Supplier
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...