HydraForce SV10-31 is a standard 3-way, 2-position (3/2) threaded cartridge solenoid directional control valve, widely utilized in the hydraulic pilot and actuation circuits of construction machinery, agricultural machinery, and specialized vehicles. I. Core Specifications (Genuine HydraForce)

Model: SV10-31 (Full model designation: e.g., SV10-31-0-N-24DG)

Brand: HydraForce (USA)

Type: 2-way, 3-position (3/2); Direct-acting; Spool-type; Threaded Cartridge Valve

Size / Cavity: Size 10 Cartridge Valve; Standard Cavity VC10-3

Pressure / Flow:

Max. Operating Pressure: 207 bar (3000 psi)

Max. Flow Rate: 22.7 L/min (6 gpm)

Voltage: DC12V / DC24V / AC110V / AC220V (DC24V is most common)

Function:

De-energized: P → T, Port A Blocked (Normally Closed type)

Energized: P → A, Port T Blocked

Installation Torque:

Valve Body: 32.5–35.3 N·m

Coil Nut: 6.8–9.5 N·m

Seal Kit: SK10-3X-MM

II. Applicable Scenarios and Equipment Types

Construction Machinery: Excavators, Loaders, Road Rollers, Pavers, Aerial Work Platforms

Agricultural Machinery: Tractors, Harvesters, Forage Harvesters (Hydraulic Pilot Control Systems)

Specialty Vehicles: Sanitation Vehicles, Tow Trucks, Forklifts, Port Machinery

Industrial Hydraulics: Machine Tools, Injection Molding Machines, Metallurgical Equipment, Hydraulic Power Units

IV. Common Faults and Diagnostics

Fault Symptoms: Failure to shift/reverse, Spool sticking/jamming, Excessive internal leakage, Weak/sluggish operation, Burnt-out coil

Diagnostic Methods:

Measure coil resistance (For DC24V, normal range is approx. 15–25 Ω)

Energization Test: A distinct "click" sound (indicating spool actuation/reset) should be heard

Inspect for spool sticking/jamming, aged/deteriorated O-rings, or abnormal installation torque

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