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SWAFLY presents the genuine Hitachi control valve part number YA00000721H3, specifically engineered for Hitachi ZX280-5G and ZX300-5A excavator models. This precision hydraulic component ensures optimal performance and reliability for your heavy equipment operations.
The Hitachi control valve with part number YA00000721H3 (also referenced as YA00000721H3) is a critical hydraulic component designed for Hitachi ZX280-5G and ZX300-5A excavators. This control valve regulates hydraulic fluid flow to various hydraulic functions, ensuring smooth and precise operation of your construction equipment.
As a leading supplier of engineering machinery parts, SWAFLY provides premium quality replacement parts that meet or exceed OEM specifications. Our comprehensive inventory includes hydraulic components, engine parts, undercarriage systems, and cabin assemblies for various construction equipment brands.
| No. | Brand | Part Number | Part Number (No Dash) | Compatible Model | Component Type |
|---|---|---|---|---|---|
| 1 | Hitachi | 9306368 | 9306368 | ZX350-5 | track adjuster |
| 2 | Hitachi | 9312060 | 9312060 | ZX290-5 | track adjuster |
| 3 | Hitachi | YA00028290H3 | YA00028290H3 | ZX890LCH-5A | CYL.;BOOM |
| 4 | Hitachi | YA00028291H3 | YA00028291H3 | ZX890LCH-5A | CYL.;BOOM |
| 5 | Hitachi | YA00028294H3 | YA00028294H3 | ZX890LCH-5A | CYL.;BUCKET |
| 6 | Hitachi | YA00028292H3 | YA00028292H3 | ZX890LCH-5A | CYL.;ARM |
| 7 | Hitachi | 4697128 | 4697128 | ZX670LCH-5G | CYL.;BOOM |
| 8 | Hitachi | 4697129 | 4697129 | ZX670LCH-5G | CYL.;BOOM |
| 9 | Hitachi | YA00028285H1 | YA00028285H1 | ZX490LCH-5A | CYL.;BOOM |
| 10 | Hitachi | YA00028286H1 | YA00028286H1 | ZX490LCH-5A | CYL.;BOOM |
| 11 | Hitachi | 4637751HCMC | 4637751HCMC | ZX450-3 | CYL.;BOOM |
| 12 | Hitachi | YA00023611HCMC | YA00023611HCMC | ZX130-5A | 4JJ1XKSA03 Engine |
| 13 | Hitachi | 4625874RM | 4625874RM | ZX330-3 | 6HK1 Engine |
| 14 | Hitachi | 9312271H | 9312271H | ZX200-5A | CYL.;ARM |
| 15 | Hitachi | 9309801H | 9309801H | ZX240-5A | CYL.;BOOM |
| 16 | Hitachi | 9309802H | 9309802H | ZX240-5A | CYL.;BOOM |
| 17 | Hitachi | 9309803H | 9309803H | ZX240-5A | CYL.;ARM |
| 18 | Hitachi | 9309804H | 9309804H | ZX240-5A | CYL.;BUCKET |
| 19 | Hitachi | 9309805H | 9309805H | ZX280-5G/300-5A | CYL.;BOOM |
| 20 | Hitachi | 9309806H | 9309806H | ZX280-5G/300-5A | CYL.;BOOM |
| 21 | Hitachi | 9309806XXXH3 | 9309806XXXH3 | ZX280-5G/300-5A | CYL.;BOOM |
| 22 | Hitachi | 9309807XXXH3 | 9309807XXXH3 | ZX280-5G/300-5A | CYL.;ARM |
| 23 | Hitachi | 9309808XXXH3 | 9309808XXXH3 | ZX280-5G/300-5A | CYL.;BUCKET |
| 24 | Hitachi | 9307832XXXH1 | 9307832XXXH1 | ZX330-5A | CYL;BOOM(R) |
| 25 | Hitachi | 9307833XXXH1 | 9307833XXXH1 | ZX330-5A | CYL;BOOM(L) |
| 26 | Hitachi | 9312267XXXH1 | 9312267XXXH1 | ZX330-5A | CYL;ARM |
| 27 | Hitachi | YA00028287H1 | YA00028287H1 | ZX470-5G/490-5A | CYL.;ARM |
| 28 | Hitachi | 4697130XXXH3 | 4697130XXXH3 | ZX670-5G/690-5A | CYL.;ARM |
| 29 | Hitachi | 4697132XXXH3 | 4697132XXXH3 | ZX670-5G/690-5A | CYL.;BUCKET |
| 30 | Hitachi | YB00007154H3//9243839 | YB00007154H39243839 | ZX240-5A | TRAVEL-DEVICE |
| 31 | Hitachi | YA00086816H3//YA00037264H3 | YA00086816H3YA00037264H3 | ZX870-5G/890-5A | VALVE;CONTROL |
| 32 | Hitachi | YA00037263H3 | YA00037263H3 | ZX670-5G/690-5A | VALVE;CONTROL |
| 33 | Hitachi | YA00028292 | YA00028292 | ZX890-5A | CYL;ARM |
| 34 | Hitachi | YA00028294 | YA00028294 | ZX890-5A | CYL.;BUCKET |
| 35 | Hitachi | YA00023717 | YA00023717 | ZX 360-5A | 6HK1 engine |
| 36 | Hitachi | 9257596RM | 9257596RM | ZX330-3 | Pump Device Assy |
| 37 | Hitachi | 8076541 | 8076541 | ZX210-5 | H links |
| 38 | Hitachi | YA00040883 | YA00040883 | guard | |
| 39 | Hitachi | YB60002115 YB60002116 | YB60002115YB60002116 | ZX330-5A | Travel Device |
| 40 | Hitachi | YB60003036 YB60003210 | YB60003036YB60003210 | ZX350LC-7 | Travel Device |
| 41 | Hitachi | 4668620RM | 4668620RM | ZX400LCH-5A | Drive Motor |
| 42 | Hitachi | 9242907RM | 9242907RM | ZX240-3/-3G/-5A | Drive Motor |
| 43 | Hitachi | 9281841RM | 9281841RM | ZX330-3/-3G/-5G/-5A | Drive Motor |
| 44 | Hitachi | 9281842RM | 9281842RM | ZX330-3/-3G/-5G/-5A | Drive Motor |
| 45 | Hitachi | YB00002172RM | YB00002172RM | ZX170LC-5A | Swing Device |
| 46 | Hitachi | YB60000181RM | YB60000181RM | ZX240-5A/ZX260LCH-5A | Swing Device |
| 47 | Hitachi | YA00023705RM | YA00023705RM | ZX200-5A | Engine |
| 48 | Hitachi | YA00023714RM | YA00023714RM | ZX300-5A | Engine |
| 49 | Hitachi | YA00023717RM | YA00023717RM | ZX330-5A/ZX400LCH-5A | Engine |
| 50 | Hitachi | YB60001526RM | YB60001526RM | ZX300-5A | Pump Device |
| 51 | Hitachi | YD00013056RM | YD00013056RM | ZX70-5G/ZX70-5A | Piston Pump |
| 52 | Hitachi | 9260886RM | 9260886RM | ZX330-3/ZX330-5A | Single Pump |
| 53 | Hitachi | YB60000802RM | YB60000802RM | ZX300-5A | Single Pump |
| 54 | Hitachi | 9257346RM | 9257346RM | ZX270-3 | Pump assy |
| 55 | Hitachi | 9257596RM | 9257596RM | ZX330-3 | Pump assy |
| 56 | Hitachi | 4680289 | 4680289 | ZX850-3 | CAB-ASSY |
| 57 | Hitachi | 4688424 | 4688424 | ZX210-3-AMS | CAB |
| 58 | Hitachi | 4664059 | 4664059 | ZX850-3 | CAB-ASSY |
| 59 | Hitachi | 4456025 | 4456025 | ZX75US-A | CAB |
| 60 | Hitachi | 4665069 | 4665069 | ZX330-3 | CAB |
| 61 | Hitachi | 4684104 | 4684104 | ZX210H-3 | CAB |
| 62 | Hitachi | 4684376 | 4684376 | ZX210-3-AMS | CAB |
| 63 | Hitachi | 4676661 | 4676661 | ZX170W-3 | CAB |
| 64 | Hitachi | 4679733 | 4679733 | ZX225US-3 | CAB |
| 65 | Hitachi | 4671395 | 4671395 | ZX225USLC-3M | CAB |
| 66 | Hitachi | 9255047 | 9255047 | ZX80SB-HCME | CAB |
| 67 | Hitachi | 4664052 | 4664052 | ZX470R-3F | CAB-ASSY |
| 68 | Hitachi | 4701969 | 4701969 | ZX135USL-3 | CAB |
| 69 | Hitachi | 4693950 | 4693950 | ZX75US-3 | CAB |
| 70 | Hitachi | YA00038618 | YA00038618 | ZX490LCH-6 | CAB |
| 71 | Hitachi | YA00056769 | YA00056769 | ZX380LC-6N | CAB |
| 72 | Hitachi | YA00038612 | YA00038612 | ZX530LCH-6 | CAB |
| 73 | Hitachi | YA60044286 | YA60044286 | ZX470LC-6 | CAB |
| 74 | Hitachi | YA60044290 | YA60044290 | ZX670LC-6 | CAB |
| 75 | Hitachi | YA00038614 | YA00038614 | ZX670LC-6 | CAB |
| 76 | Hitachi | YD00009465 | YD00009465 | ZX75USK-5B | CAB |
| 77 | Hitachi | YD00003848 | YD00003848 | ZX85US-5A | CAB |
| 78 | Hitachi | YD00006071 | YD00006071 | ZX85US-5A | CAB |
| 79 | Hitachi | 4675684 | 4675684 | ZX135US-3 | CAB |
| 80 | Hitachi | YD00007123 | YD00007123 | ZX85USB-5A | CAB |
| 81 | Hitachi | YD00010926 | YD00010926 | 75G | CAB |
| 82 | Hitachi | YD60001182 | YD60001182 | ZX70-5G | CAB |
| 83 | Hitachi | YA00037705 | YA00037705 | ZX350LC-5N | CAB |
| 84 | Hitachi | 4693630 | 4693630 | ZX85USB-3 | CAB |
| 85 | Hitachi | YA00038692 | YA00038692 | ZX135USL-5B | CAB |
| 86 | Hitachi | YA00037707 | YA00037707 | 250G LC-IT4 | CAB |
| 87 | Hitachi | YA00037706 | YA00037706 | ZX160LC-5N | CAB |
| 88 | Hitachi | YD00008908 | YD00008908 | ZX55U-5A | CAB |
| 89 | Hitachi | 9219571 | 9219571 | ZX450H | Cabin |
| 90 | Hitachi | 9276399 | 9276399 | ZX200-3 | Cabin |
| 91 | Hitachi | H490386 | H490386 | ZX360H-3G | Cabin |
| 92 | Hitachi | H490612H | H490612H | ZX120 | Cabin |
| 93 | Hitachi | YD00011376H1 | YD00011376H1 | ZX60C-5A | Cabin |
| 94 | Hitachi | 9257157HCMC | 9257157HCMC | ZX240-3 | Swing Device |
| 95 | Hitachi | YA00000721H3 | YA00000721H3 | ZX280-5G/300-5A | VALVE;CONTROL |
| 96 | Hitachi | YA00000717H3 | YA00000717H3 | ZX240-5A | VALVE;CONTROL |
| 97 | Hitachi | YA00000734H3 | YA00000734H3 | ZX330-5A | VALVE;CONTROL |
| 98 | Hitachi | 4602026HCMC | 4602026HCMC | ZX240-3 | VALVE;CONTROL |
| 99 | Hitachi | 9234729HSP | 9234729HSP | ZX240-3G | CYL.;BOOM |
| 100 | Hitachi | 9246751HSP | 9246751HSP | ZX240-3G | CYL.;BUCKET |
Located in the undercarriage system, the track adjuster maintains proper track tension on crawler excavators. Example: Hitachi ZX350-5 track adjuster ensures optimal track performance and reduces wear on undercarriage components.
Mounted between the boom and the main frame, boom cylinders provide the hydraulic power for boom lifting operations. Example: Hitachi ZX890LCH-5A boom cylinder enables heavy lifting capabilities in large excavators.
Installed between the boom and arm, arm cylinders control the digging and reaching movements. Example: Hitachi ZX330-5A arm cylinder provides precise control for excavation tasks.
Connected between the arm and bucket, bucket cylinders enable digging and material handling functions. Example: Hitachi ZX240-5A bucket cylinder ensures efficient loading and digging operations.
Located in the hydraulic system, control valves direct hydraulic fluid to various functions. Example: Hitachi ZX280-5G control valve regulates hydraulic flow for smooth equipment operation.
Integrated into the undercarriage, travel devices facilitate machine movement and positioning. Example: Hitachi ZX240-5A travel device enables precise machine positioning on job sites.
Mounted in the travel system, drive motors provide the power for crawler movement. Example: Hitachi ZX330-5A drive motor ensures reliable travel performance in various terrain conditions.
Located in the upper structure, swing devices enable the excavator's rotating capability. Example: Hitachi ZX170LC-5A swing device provides smooth 360-degree rotation for efficient operation.
Positioned in the hydraulic system, pump assemblies generate hydraulic pressure for all machine functions. Example: Hitachi ZX330-3 pump assembly delivers consistent hydraulic power for optimal performance.
Mounted on the upper frame, cab assemblies provide the operator's working environment with safety and comfort features. Example: Hitachi ZX850-3 cab assembly offers excellent visibility and operator comfort during long working hours.
Problem: John Deere 950K dozer experiencing intermittent loss of power and hesitation during forward movement operations.
Symptoms: Machine shows reduced pushing power, transmission slippage, and occasional warning lights on the dashboard.
Diagnosis: After comprehensive testing, the issue was traced to a failing transmission control module and worn clutch packs in the power shift transmission.
Solution: Replaced the transmission control module and overhauled the transmission with new clutch packs, seals, and updated software calibration. Total repair time: 3 days. Post-repair testing showed restored performance and eliminated all warning indicators.
Prevention: Regular transmission fluid analysis and scheduled maintenance according to manufacturer specifications can help prevent similar issues.
Control valves are critical components in hydraulic systems of construction equipment. The Hitachi control valve YA00000721H3 is specifically designed for ZX280-5G and ZX300-5A excavators, featuring precision machining and durable materials to withstand high-pressure hydraulic operations.
These valves function as the "brain" of the hydraulic system, directing fluid flow to various hydraulic cylinders and motors based on operator commands. Proper maintenance includes regular hydraulic fluid filtration, monitoring for leaks, and addressing any performance issues promptly to prevent damage to other hydraulic components.
Common applications include boom, arm, and bucket control, swing functions, and travel operations. The valve's spool design and pressure compensation features ensure smooth and precise equipment operation even under varying load conditions.
SWAFLY offers custom development services for specialized engineering machinery components. Whether you need custom hydraulic cylinders, specialized control valves, or unique undercarriage components, our engineering team can develop solutions tailored to your specific requirements.
We work with clients to create custom boom cylinders, arm cylinders, bucket cylinders, track adjusters, drive motors, and other critical components for various construction equipment applications. Our custom solutions ensure perfect compatibility and optimal performance for your machinery.
SWAFLY specializes in providing high-quality engineering machinery parts for construction, mining, and agricultural equipment. Our comprehensive product range includes genuine and compatible replacement parts for popular brands including Hitachi, Caterpillar, Komatsu, Volvo, and other major manufacturers.
We maintain an extensive inventory of hydraulic components, undercarriage parts, engine components, cabin assemblies, and electrical systems to meet the diverse needs of our global clientele. Our expertise in heavy equipment parts distribution ensures reliable performance and extended equipment lifespan for our customers.
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SWAFLY has established itself as a trusted supplier in the engineering machinery parts industry through consistent quality, reliable performance, and comprehensive customer support. Our parts undergo rigorous quality control processes to ensure they meet or exceed OEM specifications.
We understand the critical importance of equipment uptime in construction and mining operations. That's why we maintain extensive inventory levels and efficient logistics networks to ensure prompt delivery of parts to our customers worldwide. Our technical support team provides expert guidance on part selection, installation, and maintenance to maximize equipment performance and lifespan.
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