Hydraulic Valve Block

Custom Hydraulic Valve Blocks and Manifolds | Engineering and Procurement Guide

Hydraulic valve blocks consolidate discrete valves, pumps, and actuators into a single integrated circuit manifold, eliminating external plumbing leaks and pressure drops. Manufactured from high-tensile 6061-T6 aluminum or high-strength ductile iron, these manifolds optimize fluid routing for high-pressure industrial and mobile hydraulic systems.

Hydraulic Lever Valve Block

Our hydraulic lever valve block uses a mechanical lever combined with a hydraulic pilot linkage system. It is designed for applications requiring manual fine adjustment or mechanical remote control,

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Electric Over Hydraulic Valve Block

Our electric over hydraulic valve block combines electrical control signals with hydraulic power output. The pilot stage uses a proportional solenoid, while the main stage is a precision spool

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Hydraulic Spool Valve Block

Our hydraulic spool valve block uses a precision cylindrical spool that slides within the valve body to switch hydraulic flow paths. It features a standard three-position, four-way configuration.The

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Electric Hydraulic Valve Block

Our electric hydraulic valve block integrates a DC motor-driven hydraulic pump with a solenoid valve and relief valve, forming a complete compact hydraulic power unit.The motor power range is 0.75–3

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Hydraulic Solenoid Valve Block

Our hydraulic solenoid valve block uses a DC or AC solenoid to directly drive the spool, enabling fast and precise on-off hydraulic control.Common configurations include 2-way 2-position, 2-way

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Hydraulic Diverter Block

Our hydraulic diverter block is designed to change the flow direction of hydraulic actuators efficiently and smoothly under high-flow conditions.The structure is available in spool type or rotary

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Hydraulic Relief Valve Block

Our hydraulic relief valve block is designed to limit maximum system pressure and protect hydraulic components from overload conditions.The structure is available in both pilot-operated and

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Hydraulic Product Range

01/

Standard Modular Subplates and Collector Blocks: Interchangeable mounting bases and parallel circuit blocks designed for standard directional control valves (CETOP and ISO sizes).

02/

Custom Integrated Circuit Manifolds: Tailor-made multi-station blocks engineered from customer hydraulic schematics to house screw-in cartridge valves (SUN, Rexroth, and Vickers cavities).

03/

High-Pressure Steel and Ductile Iron Blocks: Heavy-duty manifolds designed to withstand continuous operating pressures exceeding 35 MPa without internal structural fatigue.

04/

Corrosion-Resistant Aluminum Manifolds: Anodized 6061-T6 blocks configured for marine decks, washdown environments, and chemical processing equipment.

Selection Parameters Table

Technical Parameter	Standard Specification Range	Custom Engineering Limits
Material Options	6061-T6 Aluminum / QT450 Ductile Iron	Stainless steel / forged steel upon request
Max Operating Pressure	Up to 21 MPa (Aluminum) / Up to 35 MPa (Ductile Iron)	Up to 42 MPa (Special high-pressure design)
Port Connections	SAE UNF, BSPP, NPT thread standards	Metric ISO threads / Flanged connections
Cavity Machining	Standard SAE / ISO cartridge valve cavities	Proprietary or multi-port integrated cavities
Surface Treatment	Clear / Colored Anodizing (Aluminum) / Phosphate and Black Oxide (Iron)	Electroless nickel plating / Epoxy coating
Internal Cleanliness	ISO 4406 / NAS 1638 Class 8 standard	High-precision ultrasonic deburring to Class 6

Applications

Industrial Automation and Presses

Direct integration of proportional valves and pressure control logic directly onto press cylinders to eliminate line shock.

Mobile Machinery Hydraulics

Compact valve distribution blocks mounted directly on mobile chassis to withstand continuous mechanical vibration and shock loads.

Heavy-Duty Test Rigs

Specialized multi-port manifolds routing high-frequency fluid pulses for hydraulic component fatigue testing.

Quality Control Before Shipment

Multi-Axis CNC CMM Inspection

Coordinate Measuring Machines verify hole depth, port center-to-center distances, and cavity profile dimensions against 3D CAD data.

Cross-Drilling and Deburring Verification

Endoscopes and industrial boroscopes inspect internal cross-drilled intersections to ensure 100 percent removal of machining chips and burrs that could damage downstream valves.

Pressure Containment and Leakage Testing

Manifolds undergo hydrostatic pressure testing at 1.5 times rated working pressure to verify structural wall integrity and eliminate internal gallery cross-leakage.

Electric Over Hydraulic Valve Block suppliers

Custom Manifold Engineering Services

Custom valve blocks are engineered directly from customer-provided schematic diagrams, hydraulic circuit drawings, or STEP/IGES CAD files.

Schematic-to-CAD Conversion: Engineering teams translate hydraulic schematics into optimized 3D manifold layouts, minimizing internal pressure drops and eliminating intersecting dead-end galleries.

Cartridge Cavity Customization: Precision boring for standard or custom screw-in valves, flow regulators, check valves, and relief elements.

Integrated Surface Finish Protection: Complete thread protection using plastic plugs and corrosion-inhibiting packaging for safe international ocean and air transit.

FAQ

Q: How do I choose between aluminum and ductile iron for my manifold block?

A: Aluminum (typically 6061-T6) is ideal for applications requiring lower weight and standard operating pressures up to 21 MPa, commonly used in mobile equipment and factory automation. Ductile iron (QT450) is specified for high-pressure systems exceeding 25 MPa or high-cycle industrial machinery where fatigue resistance under pressure spikes is critical.

Q: How do you ensure internal channels are free of burrs and metal chips?

A: All internal cross-drilled galleries undergo mechanical reaming, high-pressure washing, and specialized thermal or abrasive deburring processes. Final inspection utilizes borescope cameras and ultrasonic cleaning tanks to achieve strict cleanliness standards before plugging.

Q: Can you machine custom cavity profiles for proprietary cartridge valves?

A: Yes. In addition to standard industry cavities (such as SUN, Rexroth, and HydraForce standards), engineering teams program multi-axis CNC centers to match custom cartridge dimensions supplied via customer engineering drawings.

Q: What thread standards do you support for system ports?

A: Standard production supports SAE straight thread o-ring ports (UN/UNF), British Standard Pipe Parallel (BSPP), and National Pipe Thread (NPT), along with metric ISO 6149 threaded connections.

Q: What is your standard pressure testing protocol for finished manifolds?

A: Every manifold undergoes 100 percent hydrostatic pressure testing at 1.5 times maximum rated working pressure using specialized test benches to confirm zero leakage between internal oil galleries and zero external seepage.

Q: What is the typical lead time for custom manifold samples and batch production?

A: Custom prototype samples require 10 to 18 days depending on material procurement and complex multi-side CNC programming. Volume production orders typically ship within 25 to 35 days following engineering drawing approval.

We are one of the most experienced hydraulic valve block manufacturers and suppliers in China, specialized in providing high quality customized products. Please feel free to wholesale bulk durable hydraulic valve block in stock here from our factory. Contact us for quotation.

Hydraulic Lever Valve Block, Electric Over Hydraulic Valve Block, Hydraulic Spool Valve Block