Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of SD8 Series Hydraulic Sectional Valve in China, also supports customized service. If you're going to wholesale high quality SD8 Series Hydraulic Sectional Valve made in China, welcome to get pricelist from our factory.
Custom properties
The SD11 flows 70 L/min. The SD180 flows 160 L/min.
The SD8 series hydraulic sectional valve sits right between the SD11 (70 L/min) and the SD180 (160 L/min) - 90 L/min at 315 bar.
If 70 L/min is too tight and 160 L/min is more than you need, this is the valve that fits. It's the middle option in the SD series, built for equipment that needs more flow than the SD11 can deliver without paying for capacity you don't use.
Same sectional design. Same 1-12 section flexibility. Control options: manual, hydraulic, pneumatic, electro-pneumatic, electro-hydraulic, solenoid, joystick, and cable. Temperature range: -40°C to +80°C. One-piece cast high-strength alloy steel body.
Specifications
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PRODUCT PARAMETERS |
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Nominal Flow Rate |
90L / min |
23.7 GPM |
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Max Pressure |
315 bar |
4600 PSI |
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Operating Range |
15-75mm²/s |
15-75CST |
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Ambient Temperature Range |
-40℃~80℃ |
-40~176℉ |
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Structure |
Sectional :1- 12 sections |
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Controlling Method |
Manual , Hydraulic , Pneumatic, Electro-pneumatic , Electro-hydraulic , Solenoid , Joystick and Cable |
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What 90 L/min means in practice
90 L/min isn't just a number. It's about what your equipment can do.
A medium excavator needs flow for the arm, boom, swing, and blade. Running all at once takes flow. 90 L/min gives you enough to keep them moving without bogging down.
A telehandler lifting and extending simultaneously? That takes flow too. 90 L/min keeps the boom moving.
Compared to 70 L/min, 90 L/min is about 30% more flow. That's faster cycle times, the ability to run larger cylinders, and more margin when you're running multiple functions at once.
Production description
Control options - pick what fits
Eight control methods. Mix and match across sections.
Manual. Pull a lever, spool moves. Simple, no electronics, operator feels the load.
Hydraulic. Pilot pressure shifts the spool. Good for systems with pilot oil available.
Pneumatic. Air does the shifting. No electricity, no wiring.
Electro-pneumatic. Electrical + pneumatic combined. Good for specialized setups.
Electro-hydraulic. Small solenoid pilot shifts the main spool. Handles high flow with low-power signal. Good for automated systems.
Solenoid. Electrical signal shifts the spool. Connects to switches, PLCs, remote panels.
Joystick. Operator controls with a stick. Good for mobile equipment.
Cable. Mechanical push-pull control. No power needed.
Where it belongs
The SD8 series hydraulic sectional valve is for equipment that needs more than 70 L/min but not 160 L/min:
Small and medium excavators
Skid-steer loaders
Forklifts and telehandlers
Aerial work platforms
Motor graders and dump trucks
Drilling rigs and road rollers
Combine harvesters and tractors
Our Advantages
For general needs - Whether it's lifting on agricultural machinery or clamping on machine tools, our valve interface standards and models are complete enough to cover most of your applications.
For reliability needs - Especially in high-intensity, high-pressure applications like excavators and mining equipment, our valves offer durability and precise control that significantly reduce maintenance downtime.
For economic needs - Integrated design and stable quality keep failure rates and maintenance costs low, backed by a long-term warranty for your peace of mind.
Our Service
Inquiry Service
Professional selection support. Experienced sales managers-hydraulic experts-provide practical solutions. Inquiries answered same day.
Transportation Service
There are multiple transportation vehicles near the port for fast delivery
Packing & Shipping
Multiple Packages: Drum, IBC TANK, ISO TANK, Bulk ship Multiple Deliveries： Railway, Ship, Truck
We Are Serving Valued Customers Worldwide
With our commitment to manufacturing excellence, we have established ourselves as a trusted partner for businesses seeking reliable and high-quality manufacturing solutions.
About Us
Shijiazhuang Laiye Import & Export Trading Co., Ltd., established in 1988, is a subsidiary of Hebei Wendefu Hydraulic Technology Co., Ltd. The company boasts strong technical capabilities and processing capacity, and has employed a number of senior industry experts as consultants. After decades of development, the company possesses a highly qualified team for product R&D, technical support, production, and sales, as well as extensive experience in customer service.
Packaging and transportation
Factory workshop
Company exhibition
FAQ
Q: What kind of equipment is the SD8 suitable for?
A: Widely used in equipment such as small and medium-sized excavators, skid-steer loaders, forklifts, telehandlers, aerial work platforms, motor graders, dump trucks, drilling rigs, road rollers, combine harvesters, and tractors.
Q: What should be noted during sectional assembly?
A: During sectional assembly, make sure the seals between sections are flat and not twisted. Tighten the connecting bolts in a diagonal pattern, in stages, to the specified torque-this prevents one-side over-tightening that could deform the valve body or cause leakage between sections.
Q: What causes the valve stem to move sluggishly or require excessive operating force?
A: Common causes: a broken return spring, a damaged snap ring, improper clearance between the spool and the valve body bore, jamming from burrs or debris, or a dust seal that's too tight.
Q: What causes pressure fluctuations and noise?
A: Common causes: the relief valve spring is bent sideways or too soft, the relief valve damping orifice is clogged, the check valve is not sealing tightly, or there is poor contact between the poppet and the valve seat.
Q: The problem persists even after replacing the valve; what could be the issue?
A: New valves rarely have defects. First, check if the hydraulic lines are connected correctly. Next, check the cleanliness and level of the hydraulic fluid. Air trapped in the lines can also cause abnormal operation.
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