Walvoil SDS180/1/AC(XG-280)/18L/RC is a 1-section Sectional Directional Control Valve from the SDS180 series.This Pilot Operated Multi-way Valve delivers 160 L/min rated flow and operates up to 315 bar maximum pressure,designed for hydraulic control in drilling jumbos,mining machinery,and heavy-duty mobile equipment.The valve features pilot-operated control with spring return spool actuation.

　　What Is a Sectional Directional Control Valve?

　　A Sectional Directional Control Valve is a modular hydraulic valve assembly that controls the direction,flow rate,and pressure of hydraulic fluid to actuate cylinders,motors,and other work functions.The valve consists of individual working sections bolted together in series,each containing a spool that diverts oil flow to specific actuator ports.Sectional construction allows system designers to configure the exact number of spools required—from 1 to 12 sections—without the cost or lead time of a custom monoblock casting.

　　The SDS180 series is manufactured by Walvoil S.p.A.,an Italian hydraulic component manufacturer,and represents a pilot-operated multi-way valve platform.Pilot operation means the main spool is shifted by hydraulic pilot pressure rather than direct mechanical linkage,enabling remote control,reduced operator effort,and integration with electronic joystick systems.The AC(XG-280)designation indicates an inlet section configured with a main pressure relief valve factory-set to 280 bar,providing over-pressure protection for the entire valve assembly.

　　Key Specifications

　　Valve Sections:1

　　Valve Type:Sectional directional control valve

　　Control Method:Pilot operated(hydraulic pilot)

　　Spool Actuation:Spring return

　　Rated Flow:160 L/min

　　Maximum Pressure:315 bar

　　Main Relief Valve Setting(XG-280):280 bar

　　Spool Designation(18L):18 mm spool stroke,L configuration

　　Spool Feature(RC):With check valve

　　Inlet Port Size:G3/4

　　Outlet Port Size:G1

　　Work Port Sizes(A/B):G3/4

　　Section Pitch:48 mm

　　Spool Diameter:20 mm

　　Ambient Temperature Range:-40°C to+80°C

　　Operating Viscosity Range:12 to 400 mm²/s

　　Valve Body Material:Cast iron

　　Spool Material:Hardened alloy steel

　　Mounting Orientation:Horizontal or vertical platform mounting

　　Weight:35.0 kg

　　Dimensions(L×W×H):40 cm×30 cm×15 cm

　　Circuit Type Options:Parallel,tandem,or series

　　Neutral Circuit Configuration:Open center or closed center

　　Approvals:CE marking

　　Compatible Hydraulic Fluid:Mineral oil based hydraulic fluid

　　Brand:Walvoil

　　Technical Highlights

　　Main relief valve set to 280 bar protects downstream components.The AC(XG-280)inlet section includes an integral main pressure relief valve factory-calibrated to 280 bar.This protects the hydraulic system from pressure spikes and prevents component damage in drilling jumbo applications where sudden load changes occur during percussion drilling and boom positioning.

　　Pilot-operated control reduces operator fatigue in continuous-duty cycles.The main spool is shifted by low-pressure pilot oil,eliminating the need for direct mechanical linkage and heavy lever forces.In drilling jumbo applications,operators can control multiple functions from a remote joystick station,improving ergonomics and enabling faster cycle times during face drilling operations.

　　Sectional construction allows field-configurable spool count.The SDS180 series supports 1 to 12 sections,enabling system designers to specify exactly the number of functions required.For drilling jumbos,this modularity simplifies spare parts inventory—maintenance teams stock one valve family rather than multiple discrete models.

　　Spring return spool action provides automatic centering for safety.The 18L designation indicates spring return to neutral,ensuring that hydraulic functions stop immediately when pilot pressure is released.This fail-safe behavior is critical in underground mining applications where uncontrolled boom movement poses safety risks.

　　20 mm diameter spools deliver 160 L/min nominal flow capacity.The oversized spool design minimizes pressure drop across the valve,reducing energy consumption and heat generation in high-duty-cycle drilling applications.This flow capacity supports simultaneous operation of multiple actuators in hydraulic drilling systems.

　　Phosphated valve surface provides 48-hour neutral salt spray corrosion resistance.The surface treatment meets industrial corrosion protection standards for equipment operating in humid underground mine environments.This extends service life and reduces maintenance frequency in harsh operating conditions.

　　Applications

　　Drilling jumbo boom and feed control:Directs hydraulic flow to boom positioning cylinders,feed extension cylinders,and rotation motors.The 160 L/min rated flow supports multiple simultaneous functions in single-boom and multi-boom drilling rigs used in underground mining and tunnel construction.

　　Percussion drilling circuit control:Manages pilot-operated directional control for rock drill percussion circuits.The 280 bar relief valve setting provides pressure protection appropriate for high-pressure drilling hydraulics,with typical drilling percussion pressures operating between 140 bar and 200 bar depending on rock conditions.

　　Mining machinery hydraulic functions:Controls auxiliary functions on underground mining equipment including roof bolters,scaling machines,and shotcrete manipulators.The pilot-operated design enables remote control from operator compartments or pendant stations,reducing personnel exposure to hazardous areas.

　　Construction excavator attachment control:Directs hydraulic flow for breaker hammers,thumbs,tilt rotators,and auxiliary attachments.The spring return spool ensures automatic deactivation when pilot pressure is interrupted.

　　Agricultural loader implement circuits:Manages lift,tilt,and auxiliary functions on front-end loaders and telehandlers.The sectional design supports customization for specific implement requirements.

　　Material handling equipment motion control:Provides directional control for forklift mast functions,side-shift,and fork positioning.The valve’s pilot-operated capability integrates with electronic joystick systems common in modern material handling equipment.

　　Mobile crane outrigger and boom control:Directs hydraulic flow to stabilizer cylinders and boom extension circuits.The modular sectional design allows crane OEMs to configure valve assemblies matching exact functional requirements.

　　Forestry equipment hydraulic circuits:Controls grapple rotation,saw motor direction,and boom articulation in forestry harvesters and forwarders.The robust cast iron construction withstands the shock loads typical in timber handling applications.

　　Selection Guidance

　　Suitable applications:

　　Drilling jumbos and mining equipment requiring pilot-operated hydraulic control with 280 bar main relief protection

　　Mobile machinery with remote operator stations where direct mechanical linkage is impractical

　　Systems operating within 160 L/min flow capacity and 315 bar maximum pressure envelope

　　Applications requiring spring return to neutral for safety compliance in underground mining environments

　　Hydraulic circuits using G3/4 work ports and G1 outlet connections

　　Not recommended for:

　　Systems requiring manual direct lever control at the valve.For manual control applications,select an SDS180 variant with manual spool actuation or consider the SD8 series with integrated lever handles.

　　Load-sensing hydraulic systems.The SDS180/1/AC configuration operates in open center or closed center mode.For load-sensing applications requiring variable pump displacement control,select the DLS180 variant which includes load-sensing signal capability.

　　Applications exceeding 160 L/min continuous flow.For higher flow requirements,Walvoil offers the SD25 series rated for 240 L/min with compatible pilot-operated control options.

　　Purely pneumatic control systems.Pilot operation on this valve requires hydraulic pilot pressure.For pneumatic pilot actuation,a pneumatic-to-hydraulic interface valve is required between the control system and the main valve pilot ports.

　　FAQ

　　1.What are the dimensions and weight of the Walvoil SDS180/1/AC(XG-280)/18L/RC?

　　The valve assembly measures 40 cm×30 cm×15 cm and weighs 35.0 kg.Section pitch between working sections is 48 mm per additional spool for multi-section configurations.

　　2.What is the delivery time or lead time for the SDS180/1/AC(XG-280)/18L/RC?

　　Manufacturer standard lead time is 4 to 6 weeks for configured valve assemblies.For stocked configurations,we dispatch within 5 to 10 business days.Beijing Zhongping Technology maintains inventory of common SDS180 variants for expedited shipment to mining and construction customers.

　　3.Is the Walvoil SDS180/1/AC(XG-280)/18L/RC in stock and available for immediate shipment?

　　Stock availability varies by configuration.The 1-section AC(XG-280)configuration is a commonly specified variant for drilling jumbo applications.We recommend contacting Beijing Zhongping Technology for current inventory status and availability confirmation.

　　4.What certifications or approvals does the SDS180/1/AC(XG-280)/18L/RC hold?

　　The SDS180 series carries CE marking for compliance with European Union safety,health,and environmental protection requirements.The valve is manufactured by Walvoil S.p.A.under ISO 9001 quality management system certification.

　　5.How much does the SDS180/1/AC(XG-280)/18L/RC cost?What is the price range?

　　The SDS180/1/AC(XG-280)/18L/RC typically ranges from$3,800 to$5,200 USD per unit depending on quantity,configuration details,and distribution channel.Prices fluctuate due to exchange rates,tariffs,and factory adjustments.For an accurate quotation with current pricing,contact Beijing Zhongping Technology directly.

　　6.What payment terms do you accept for purchasing the SDS180/1/AC(XG-280)/18L/RC?

　　We accept bank wire transfer(T/T)and major credit cards.For qualified corporate accounts with established credit history,Beijing Zhongping Technology offers net 30 payment terms upon credit approval.

　　7.How do I install the SDS180/1/AC(XG-280)/18L/RC and what mounting is required?

　　The valve mounts on a horizontal or vertical platform using standard fasteners.Inlet and work ports use G3/4 connections while the outlet port is G1.Pilot lines connect to the designated pilot ports on the inlet section.We provide a free pre-delivery installation drawing review for all orders placed through Beijing Zhongping Technology.

　　8.What is the return policy and warranty period for the SDS180/1/AC(XG-280)/18L/RC?

　　We provide a 12-month warranty against manufacturing defects from the date of shipment.Returns require prior authorization and are subject to restocking fees.Beijing Zhongping Technology processes RMA requests within 48 business hours of receipt and provides technical support for warranty claim evaluation.

　　9.Can the main relief valve setting be adjusted from the factory 280 bar on the SDS180/1/AC(XG-280)/18L/RC?

　　The AC(XG-280)inlet section includes a main relief valve factory-set to 280 bar.The setting is adjustable within the valve‘s operational range using the adjustment screw on the relief valve cartridge.We recommend pressure adjustment be performed by qualified hydraulic technicians using a calibrated pressure gauge to verify the final setting.

　　10.What are the duty,customs,and import tariff considerations when importing the Walvoil SDS180/1/AC(XG-280)/18L/RC?

　　The HTSUS code is 8481.20.0010 and ECCN classification is EAR99.International shipments are dispatched under Incoterms CPT(Carriage Paid To),with duties,customs fees,and applicable VAT payable by the buyer at the time of delivery.Beijing Zhongping Technology provides commercial invoices,packing lists,and certificates of origin required for customs clearance on all export orders.