Home / Products / Hydraulic Valve / Directional Control Valve / Hydraulic Pressure Reducing Valve ZDR ZDR6 ZDR6DP ZDR6DP2-4X Replace Rexroth R900483788 ZDR6DP2-4X/210YM ZDR6DP2-45/210YM Pressure Reducing Valve

Hydraulic Pressure Reducing Valve ZDR ZDR6 ZDR6DP ZDR6DP2-4X Replace Rexroth R900483788 ZDR6DP2-4X/210YM ZDR6DP2-45/210YM Pressure Reducing Valve

Hydraulic Pressure Reducing Valve ZDR ZDR6 ZDR6DP ZDR6DP2-4X Replace Rexroth R900483788 ZDR6DP2-4X/210YM ZDR6DP2-45/210YM Pressure Reducing Valve

Warranty: 12 Months just like OEM Pump

Mark: SENHENGYUAN Hydraulics
Short Lead Time, Prompt Delivery

Wechat:+86 188-7629-1732

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E: wise@fjzhenyuan.com

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Product Description

Product Explanation for ZDR6DP2-4X Hydraulic Pressure Reducing Valve (R900483788) - Rexroth Replacement

Core Positioning

This ZDR6DP2 hydraulic pressure reducing valve is a direct interchange/replacement part for Rexroth ZDR series with original part number R900483788, covering mainstream models ZDR6DP2-4X/210YM and ZDR6DP2-45/210YM of the classic ZDR6/ZDR6DP series. Engineered for precise hydraulic pressure regulation and stabilization in industrial systems, it fully complies with Rexroth’s original technical specifications and dimensional standards, realizing seamless drop-in replacement for Rexroth ZDR6DP2 pressure reducing valves. As a core hydraulic control component of the ZDR series, it is dedicated to maintaining stable working pressure of hydraulic circuits, and is an ideal universal replacement for Rexroth hydraulic pressure reducing valves in various industrial scenarios.

Core Design & Performance Advantages

1:1 Rexroth Original Compatibility
Manufactured in strict accordance with Rexroth ZDR6DP2’s original drawings and technical parameters, the installation interface, pressure rating and flow characteristics are perfectly matched with the original valve. No additional modification or system debugging is required, directly restoring the hydraulic system’s pressure control performance.
High-Precision Pressure Regulation
Adopts optimized spool and pressure regulating spring structure, with sensitive pressure response, accurate pressure setting and small pressure fluctuation. It can stably maintain the preset working pressure of the hydraulic circuit, effectively avoiding pressure shock and ensuring the safe operation of hydraulic equipment.
Industrial-Grade Pressure Resistance & Durability
The high-strength cast iron valve body has excellent pressure-bearing capacity (210YM rated pressure), and the internal wear-resistant sealing components effectively reduce internal leakage. It is adapted to high-pressure, continuous working conditions of industrial hydraulic systems, with long service life and low failure rate.
Wide Compatibility of ZDR Series
As the core model of ZDR6 series, it shares the same hydraulic matching and installation standards with the entire ZDR product line (ZDR/ZDR6/ZDR6DP). It supports flexible matching with other hydraulic components of Rexroth series, meeting the pressure regulation needs of different specifications of hydraulic systems.
Simple Operation & Low Maintenance
The integrated pressure adjustment knob is easy to operate and has reliable locking performance, preventing accidental pressure change caused by vibration; the modular internal structure enables quick disassembly and maintenance, reducing the downtime of hydraulic equipment and maintenance costs.

Core Application Scenarios

✅ Direct replacement of original Rexroth ZDR6DP2-4X/210YM, ZDR6DP2-45/210YM (R900483788) pressure reducing valves✅ Pressure regulation and stabilization of industrial hydraulic systems in machine tools, hydraulic presses and injection molding machines✅ Hydraulic circuit pressure control of construction machinery, agricultural machinery and mining equipment✅ Pressure management of hydraulic systems in metallurgical, papermaking and packaging machinery with high pressure stability requirements✅ Daily maintenance and emergency replacement of Rexroth ZDR series hydraulic pressure reducing valves in industrial sites

Core Model & Series Correlation

This product is the key replacement model of Rexroth ZDR6 series with exclusive matching part number R900483788, including two fully interchangeable mainstream specifications: ZDR6DP2-4X/210YM and ZDR6DP2-45/210YM. Both belong to the ZDR6DP sub-series of the ZDR product line, with complete compatibility with Rexroth ZDR6 series pressure reducing valves in structure and performance, and can be flexibly applied to all hydraulic systems configured with Rexroth ZDR6DP2 pressure reducing valves.

Type Code

01	02	03	04	05	06		07		08	09	10	11	12	13	14
Z	DR	6	D			–	4X	/		Y					*

01	Sandwich plate valve	Z
02	Pressure reducing valve	DR
03	Size 6	6
04	Direct operated	D
05	Pressure reduction in channel A➁	A
	Pressure reduction in channel B➁	B
	Pressure reduction in channel P➁	P
Adjustment type
06	Rotary knob	1
	Sleeve with hexagon and protective cap ("J3" version without protective cap)	2
	Lockable rotary knob with scale	3¹⁾
	Rotary knob with scale	7
07	Component series 40 … 49 (40 … 49: unchanged installation and mounting dimensions)	4X
08	Secondary pressure up to 25 bar	25
	Secondary pressure up to 75 bar	75
	Secondary pressure up to 150 bar	150
	Secondary pressure 210 bar	210
	Secondary pressure up to 315 bar (only version "B", "P", and "2")	315
09	Internal pilot oil supply, external pilot oil return	Y
10	With check valve (only version "A")	no code
10	Without check valve	M
Corrosion resistance
11	None	no code
11	Improved corrosion protection (240 h salt spray test according to EN ISO 9227)	J3
Seal material
12	NBR seals	no code
	FKM seals	V
	Observe compatibility of seals with hydraulic fluid used.
13	Without loSAARing hole	no code
	With loSAARing hole	/60²⁾
	With loSAARing hole and locking pin ISO 8752-3x8-St	/62
13	Further details in the plain text	*

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