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PC200 3详情图
PC200 3副图
PC200 3详情图
PC200 3副图

709-70-51200 Hydraulic Main Pressure Relief Valve for PC200-3 PC220-3

Even rugged, time-tested machines like the PC200-3, PC220-3, and PW200-1 rely heavily on precise hydraulic regulation to perform. The main control pressure relief valve acts as the ultimate safety guardian and power regulator for your entire hydraulic system. When this valve becomes fatigued or scored over years of hard labor, your machine will experience a severe drop in operational power, weak arm/bucket movements, or complete engine stalling under load. Our brand-new replacement valves for the classic -3 series guarantee exact factory pressure settings, instantly restoring your machine's original breakout force and preventing catastrophic pump blowouts.
  • 100% Brand New Construction: Forged from specialized, high-density alloy steel designed to withstand continuous pressure cycles in vintage and classic heavy machinery.
  • Micron-Level Precision: CNC-machined internal spools provide zero-leakage sealing, ensuring your machine maintains peak hydraulic power under heavy load without premature fluid bypassing.
  • Advanced Thermal Treatment: Internal valve components are deeply heat-treated to resist cavitation, scoring, and thermal fatigue caused by continuous fluid flow during heavy operations.
  • Instant Pressure Relief: Protects expensive legacy main pumps and hydraulic lines by instantly venting dangerous excess pressure back to the tank the moment the maximum relief threshold is met.
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Comprehensive Product Line
From legacy -3 series machines to modern mining behemoths, we provide a complete spectrum of final drives, swing motors, and main control valve assemblies for nearly all heavy equipment platforms.
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Massive Inventory Ready
Time is money on the job site. We maintain a vast, warehouse-ready inventory of thousands of hydraulic assemblies and critical modules, ensuring your order is processed without delay.
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Heavy-Duty Export Packaging
Your high-value parts are protected. We utilize heavy-duty, anti-rust treatments and secure them in reinforced, fumigation-free wooden crates, ensuring safe and undamaged global delivery via sea or air freight.
Brand
YIKAN
Origin
Guangdong, China
Product Name
Fan motor
Model
PC200-3泄压阀
Part number
709-70-51200
Application field
Bulldozer
Warranty/Spare Parts
Six months
Quality
High guarantee
Status
100% new
Minimum order quantity
1 piece
PRODUCTS

PRODUCTS

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HPV140(HP1250K)封面图 ps压缩版、

High-Torque Hydraulic Main Pump Shaft (Part No. 708-2G-12111) for Komatsu PC300-7 & PC360-7 (HPV140 Pump)

Premium heavy-duty hydraulic main pump front drive shaft (splined input shaft) engineered for HPV140 and HPV132 series variable displacement axial piston pumps. Direct replacement for part number 708-2G-12111 (interchangeable with 708-2G-12110), built as the primary power input interface to transfer continuous heavy engine torque directly to the rotating cylinder block in 30–36 ton class excavators.
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Heavy-Duty Hydraulic Main Pump Swash Plate / Cradle (Part No. 708-2H-04690 / 708-2H-04680) for Komatsu PC400 & PC450 Series (HPV145 Pump)

Premium heavy-duty hydraulic main pump swash plate (swash plate cradle / cam plate assembly) engineered for HPV145 series swash plate axial piston pumps (front and rear pump compatible). Direct replacement for part number 708-2H-04690, built to sustain continuous multi-ton axial thrust loads from all 9 piston shoes while delivering seamless angular deflection for variable displacement control in 40–45 ton class heavy excavators.
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Heavy-Duty Hydraulic Pump Cylinder Block (Part No. 708-2H-04620) for Komatsu PC400 & PC450 Series (HPV145 Pump)

Premium heavy-duty hydraulic main pump cylinder block (pump barrel / rotary cylinder assembly) engineered for HPV145 series swash plate axial piston pumps. Direct replacement for part number 708-2H-04620, built with centrifugally cast bimetallic copper alloy bushings to guide 9 reciprocating high-pressure pistons and maintain a hydrodynamic seal against the valve plate in 40–45 ton class heavy excavators.
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HPV145配流盘 ps压缩版

High-Precision Hydraulic Main Pump Valve Plate (Part No. 708-2H-04750 / 708-2H-04760) for Komatsu PC400 & PC450 Series (HPV145 Pump)

Premium heavy-duty hydraulic main pump servo slider block (variable displacement slide block) engineered for HPV145 series axial piston pumps. Direct replacement for part number 708-2H-34150 (7082H34150), built to transmit heavy cyclic servo piston forces to the swash plate tilt pin for precise, rapid displacement regulation in 40–45 ton class heavy excavators.
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News

News

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11/ September

How to Test an Excavator Main Control Valve Before Installation

How to Test an Excavator Main Control Valve Before Installation
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ps压缩版

10/ September

How to determine whether to choose original factory parts or aftermaket parts

The decision of whether to use original parts or aftermarket parts is not solely based on price
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Main Control Valve Failure Symptoms in Excavators

7/ September

Main Control Valve Failure Symptoms in Excavators

Read excavator valve symptoms, pressure checks, spool wear signs, and pilot signals to decide whether repair, remanufacture, or replacement will cut downtime fast.
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New vs Remanufactured Excavator Hydraulic Pumps Which Reduces Downtime

1/ September

New vs Remanufactured Excavator Hydraulic Pumps: Which Reduces Downtime

Compare new vs remanufactured excavator pumps by downtime, fitment, test data, warranty, and restart risk so buyers choose the lower-risk option fast.
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What We Do

Services we Offer

No matter what your hydraulic maintenance needs may be, we’re here to help. Contact us today to learn more about our
services and how we can assist you with all of your needs.
Processing

Processing

With years of experience in the processing industry, we offer full-chain customized processing services with our mature production system and stringent quality control standards! Whether you are conducting small-batch trial production of new products, large-scale OEM manufacturing, or customized processing of personalized products, you can enjoy a one-stop service from demand matching to finished product delivery, helping your products to be launched efficiently and quickly to the market. We boast an experienced production team and a modern processing workshop, proficient in various OEM processes including machining, stamping, injection molding, and assembly. We can adapt to the needs of various materials such as metal, plastic, and rubber, perfectly matching diverse industry scenarios including electronics, automotive parts, household goods, hardware tools, and medical devices. From product drawing analysis and processing technology planning to process execution, precision control, and finished product inspection, every step strictly adheres to industry standards, ensuring that the processed products meet precision standards, have stable quality, and strong consistency, effectively reducing your production and operating costs.
Casting

Casting

With years of experience in the casting industry, we provide core casting solutions for your product manufacturing with our exquisite craftsmanship and rigorous quality control! Whether you are developing new products through casting, mass production with casting support, or developing customized castings, you can enjoy exclusive casting services throughout the entire process, helping your products seamlessly transition from design to mass production delivery. We boast a team of experienced casting engineers and a modern casting workshop, proficient in various casting processes such as sand casting, die casting, and precision casting. Our capabilities adapt to diverse material requirements, including cast iron, cast aluminum, cast copper, and stainless steel, perfectly matching the needs of multiple industries such as machinery manufacturing, automotive parts, construction machinery, hardware tools, and medical devices. From product drawing analysis and casting process optimization to mold making, casting, subsequent processing, and quality inspection, every step strictly adheres to international casting standards, ensuring high precision, sufficient strength, and stable performance of castings, effectively enhancing the core competitiveness of our products. We offer dedicated one-on-one service throughout the entire process, responding promptly to your needs and accelerating project progress, so you don’t need to worry about technical barriers or production delays. Professional mold making services – choosing us means choosing an efficient, reliable, and worry-free partner to help your products quickly capture the market.
Abrasive tools

Abrasive tools

With years of experience specializing in abrasive molds, we leverage our expertise to ensure the smooth mass production of your products! Whether you’re developing new products, adapting them for mass production, or upgrading existing molds, you can enjoy a full-process customized abrasive mold development service. We have a team of experienced engineers who strictly adhere to industry standards at every stage, from product drawing analysis and mold structure optimization to mold processing and trial molding. We utilize advanced production equipment and high-quality raw materials to ensure high precision, long lifespan, and stable molding, effectively reducing your production losses. We offer dedicated one-on-one service throughout the entire process, responding promptly to your needs and accelerating project progress, so you don’t need to worry about technical barriers or production delays. For professional mold making, choosing us means choosing an efficient, reliable, and worry-free partner to help your products quickly capture the market!
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Hydraulic Equipment

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We have our own R&D and production team that supports small batch customization and sample processing related to hydraulic maintenance.

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