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PC35MR-2 Mini Excavator Hydraulic Main Control Distribution Valve (8-Spool OEM 723-19-13501 723-19-13503)
Place of Origin:China
Brand Name:HanRui
Model Number:PC35MR-2
Product Description
Zero Tail-Swing Excavator Hydraulic System
HanRui PC35MR-2 Excavator Hydraulic Main Control Distribution Valve (723-19-13501 Series)
Factory-direct OEM replacement engineered for 3.5-ton compact excavators. Configured as a modular 8-Spool / 9-Spool Sectional Multiple Control Valve Assembly (Cross Ref: 723-19-13501 / 723-19-13503 / 723-18-15900). Designed for closed-center load-sensing systems (CLSS), providing ultra-fine grading sensitivity, proportional dozer/boom-swing control, and zero internal fluid bypass under continuous 26.5 MPa working pressures.
⚙️ Valve Model: 8-Spool / 9-Spool Sectional CLSS Valve ⚡ Rated Pressure: 26.5 MPa (3840 PSI) 🚜 Integrated Dozer & Boom-Swing Spools
Wholesale Price
$1,100 – $2,300 USD/Unit
Direct factory price (Save 45%+ vs dealer distributor markups)
MOQ & Dispatch
1 Unit (In Stock)
Ready for worldwide air/sea express dispatch in 1–3 days
Quality Assurance
12 Months
100% dynamic hydraulic bench test video & pressure proof
Precision Hydraulic Engineering Standards
⚙️ Anti-Fatigue Sectional Cast Body
High-strength ductile iron sections assembled with precision-torqued tie-rods, completely preventing oil leakage between slice blocks under high-pressure impact.
🎯 Micro-Honed Spool Bore Sealing
Hardened alloy spools with sub-micron radial clearance eliminate implement drift, preventing boom dropping and dozer blade settling during heavy trenching.
🚜 Multi-Circuit Priority Coordination
Dedicated metering grooves provide simultaneous compound operation: straight travel tracking, boom lift, arm curl, swing, and front blade grading.
Technical Specifications & Valve Fitment Matrix
| Applicable Machine Models | PC35MR-2, PC30MR-2, PC40MR-2, PC50MR-2 (3.0–4.0 Ton Class) |
| Original Valve Designation / Model | 8-Spool / 9-Spool Sectional Multiple Control Valve (CLSS System) |
| Cross-Reference OEM Numbers | 723-19-13501, 723-19-13503, 723-18-15900, 723-19-13500, 20T-62-71160 |
| Controlled Circuits (8-9 Sections) | Boom, Arm, Bucket, Upper Swing, Left Track, Right Track, Dozer Blade, Boom Swing (Offset), Aux Attachment Line |
| Rated Operating Pressure | 24.5 MPa ~ 26.5 MPa (245 – 265 Bar) |
| Hydraulic Pump Match | Calibrated for PC35MR-2 variable displacement axial piston pump units |
| Installation Standard | 100% Direct Bolt-On OEM Fit (Pre-assembled with relief cartridges) |
PC35MR-2 Distribution Valve Troubleshooting & Diagnostics
Problem 1: Dozer Blade Settling or Boom / Arm Drifting Down Under Load
Probable Cause: Micro-clearance wear across the spool bore or debris trapped under the load-holding check valve poppets, allowing high-pressure fluid to drain back to the tank.
Field Remedy: Flush check valve cavities or install a pre-calibrated HanRui PC35MR-2 distribution valve assembly (723-19-13501).
Field Remedy: Flush check valve cavities or install a pre-calibrated HanRui PC35MR-2 distribution valve assembly (723-19-13501).
Problem 2: Machine Pulls to One Side While Traveling Straight
Probable Cause: Sticking travel spool, uneven pilot pressure signals, or sticky straight-travel priority valve preventing equal flow distribution to both rubber tracks.
Field Remedy: Inspect pilot control pressures or install a replacement valve bank to re-balance track drive tracking.
Field Remedy: Inspect pilot control pressures or install a replacement valve bank to re-balance track drive tracking.
Problem 3: Sluggish Movement & Weak Digging Power Once Oil Heats Up (>60°C)
Probable Cause: Thermal viscosity loss accelerates internal cross-port bypass across worn spool lands, dropping working circuit pressures.
Field Remedy: Check oil cooler performance and replace the worn main control valve bank to restore tight hydraulic volumetric pressure.
Field Remedy: Check oil cooler performance and replace the worn main control valve bank to restore tight hydraulic volumetric pressure.
Frequently Asked Questions (FAQ)
Q: What is the exact valve model and part number for this PC35MR-2 valve?
A: It is an 8-spool / 9-spool sectional multiple control valve assembly designed for CLSS systems, primarily referenced under OEM numbers 723-19-13501, 723-19-13503, and 723-18-15900.
Q: Does the valve assembly come complete with dozer blade and boom-swing spools?
A: Yes. Every HanRui PC35MR-2 valve arrives fully assembled with spools for dozer blade control, boom side-swing (offset), dual travel, and implement digging functions.
Q: Are main relief valves and overload valves included?
A: Yes. All main relief and port overload/anti-cavitation relief cartridges are pre-installed and calibrated to original factory pressure limits.
Looking for a Replacement Control Valve for PC35MR-2?
Share your excavator serial number or nameplate photo (723-19-13501 / 723-19-13503) for instant compatibility confirmation, global delivery schedules, and wholesale pricing.
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