Komatsu 723-57-12306 Main Hydraulic Control Valve

Place of Origin	China/Japan
Brand Name	LIRACE/Komatsu
Model Number	PC120-6 PC130-7
Minimum Order Quantity	1 PCS
Price	Negotiable price
Packaging Details	Wooden case or as required
Delivery Time	5-8 Weekdays
Payment Terms	Western Union,T/T
Supply Ability	300pcs /Month

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Basic Parameters & Introduction

"This high-precision multi way control valve assembly (main distribution valve/distributor), with core original part number 723-57-12305, is fully compatible and replaces part number 723-57-12306. As the core center of hydraulic fluid distribution and logic control, this assembly is specially designed for Komatsu's classic medium-sized excavator, perfectly matching main models such as PC120-6 and PC130-7. The product is designed with high precision for the internal valve core flow channel based on first principles, ensuring absolute certainty in the flow distribution of each actuator under composite action. The physical dimensions of the packaging are approximately 620mm × 450mm × 480mm, with an overall net weight of approximately 118kg. The original factory standard position is precisely docked.
"

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Maintenance Tips

"Daily inspection (every 10 hours): Before starting work, it is mandatory to inspect the control valve body's first conduit and high-pressure pipe joints, check the valve stem for dust accumulation, and eliminate any trace leakage hazards.

Hard cleaning of filter element (every 500 hours): The hydraulic return filter element and high-precision pilot filter element must be replaced every 500 hours to prevent small metal debris from entering the sliding valve mating surface with the circuit.

Hydraulic oil quality regulation (every 2000 hours): The maximum duration should not exceed 1 year, and the hydraulic oil tank must be thoroughly cleaned and replaced with original standard anti-wear hydraulic oil. If it is in the condition of breaking hammer for a long time, this maintenance cycle needs to be forcibly shortened by 50%."

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Installation Tips

"Extreme dust-free and error proof (core pit avoidance): The unpacking and installation environment needs to be treated with noise reduction and dust removal. Before connecting dozens of pipelines, it is necessary to thoroughly clean the joints with specialized cleaning agents. Please label each oil pipe with a hard number during disassembly. It is strictly prohibited to connect the conduit and main oil pipe in a misaligned manner, otherwise it will cause system logic disorder.

Symmetrical tightening of torque: The installation bolts of the valve body and high-pressure flange bolts must be tightened in stages and symmetrically cross tightened strictly according to the original factory's specified torque using a torque wrench to avoid local stress that may cause slight deformation of the valve body and sticking of the valve core.

Idle low pressure exhaust: After installation and confirming the oil level, the engine must be kept idling for 15 minutes for the first ignition. Subsequently, control each oil cylinder to perform full stroke slow reciprocating motion, thoroughly exhaust the air inside each oil circuit, and operate at full load only after the thermodynamic state is stable."

Brand	China/Japan	Brand Name	LIRACE/Komatsu
Model	723-57-12305 723-57-12306	Product Name	Control Valve Assembly
Part Number	PC120-6 PC130-7	ApplicableBrand	Komatsu
Warranty Period	6-12 months	Condition	NEW
Standard or Non-standard	Standard Type	Guarantee	We will inspect the products and send detailed pictures to the buyer for confirmation.
Applicable Industries	Mechanical Repair Shops, Retail, Construction, Energy, Mining	Shipping Method	Sea freight, Air freight, DHL/FEDEX/TNT/EMS

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What if there are quality problems with the purchased products?

Please rest assured completely. We implement strict quality control throughout the whole production process. From raw material incoming inspection to finished product delivery, all items undergo multiple rounds of rigorous technical inspection and performance testing, to fully ensure every delivered product meets 100% qualified standards. All unqualified products detected during inspection will be disposed of by centralized destruction, to firmly prevent defective goods from entering the market. Meanwhile, we provide an extended warranty period of 6 to 12 months for all products. Within the warranty period, if any non-artificial quality failure occurs, please contact us promptly. Our professional technical team will respond at the earliest time and offer targeted solutions based on actual conditions. In addition, we deliver all-round technical support to safeguard your after-sales operation. Always taking customer satisfaction as the core principle, we are committed to establishing long-term and stable cooperative partnerships with global clients.

What happens if the delivered item is unsuitable for my needs?

Please rest assured. To ensure that the products you receive fully meet your needs, we will conduct multiple rounds of demand confirmation with you before shipment, fundamentally avoiding the problem of wrong or missing delivery. To further ensure accuracy, we will first conduct precise query and verification through the product part number you provide to ensure that the product model and specifications are completely matched. If you do not have an accurate part number temporarily, we will arrange professional technicians to check and confirm one by one according to the clear product pictures and corresponding construction machinery models you provide, and communicate and synchronize with you throughout the process until confirmed correct before arranging shipment, to fully ensure that you receive the products you need and avoid unnecessary troubles.

What professional shipping and delivery standards can we provide you?

Within our international trade operations, we prioritize a high-efficiency supply chain and a transparent logistics framework. To ensure the accuracy of every shipment, a standardized PDI (Pre-Delivery Inspection) system is strictly enforced. Before the final sealing of containers, our QC specialists conduct a thorough re-examination. We provide clients with high-resolution photos of the actual items, packaging details, and the Packing List for Visual Confirmation, ensuring 100% compliance with order specifications and delivery transparency. We support versatile Incoterms, including EXW and FOB. To meet diverse delivery timelines and cost constraints, we offer a multi-modal logistics matrix ranging from Ocean Freight and Air Freight to global couriers (DHL/FEDEX/TNT/EMS). We guarantee full professional documentation support for every shipment to ensure a safe, timely, and compliant arrival at the port of destination.

We are a global one-stop supplier of excavator spare parts. We maintain full control over the entire process from R&D and manufacturing to sales, delivering top-quality excavator components to you.

Komatsu 723-57-12306 Main Hydraulic Control Valve

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What if there are quality problems with the purchased products?

What happens if the delivered item is unsuitable for my needs?

What professional shipping and delivery standards can we provide you?

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