ranroswang@hksparkling.com 
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Hydraulic Lock Valve 420-00004A 410114-00050 For Doosan and Daewoo excavator DX255LC DX300LC Solar 220LC-V Solar 250LC-V
Part number 420-00004A refers to a hydraulic Lock Valve used in the piping systems of Doosan and Daewoo excavators. This valve is a safety and control component for hydraulic cylinders, often associated with optional boom and arm piping.
Part Name: Valve, Lock / Hydraulic Cylinder Lock Valve
Function: This valve is installed in the hydraulic lines (often boom or arm piping) to mechanically lock the cylinder in position, preventing movement in the event of hose failure or for precise control during operation.
Weight: Approximately 12.2 kg
The 420-00004A is compatible with a wide range of Doosan and Daewoo excavators:
Crawler Excavators:
Doosan: DX225LC, DX255LC, DX300LC, DX340LC, DX480LC, DX520LC, DX225LCA.
Daewoo/Doosan Solar Series: Solar 220LC-6, Solar 220LC-V, Solar 250LC-V, Solar 290LC-V, Solar 400LC-V, etc.
Wheeled Excavators:
Doosan: DX170W, DX210W.
Daewoo/Doosan Solar Series: Solar 200W-V, Solar 210W-V.
The SPARKLING MACHINERY NEW 420-00004A / 410114-00050 VALVE;LOCK Photo:
Product: Hydraulic Lock Valve 420-00004A / 410114-00050
Applications: Doosan / Daewoo DX255LC, DX300LC
Brand: SPARKLING
Overview
As an experienced product manager in excavator parts, I present the SPARKLING Hydraulic Lock Valve 420-00004A (410114-00050) — a precision-engineered safety and performance component designed specifically for Doosan and Daewoo DX255LC and DX300LC excavators. Built to deliver reliable load-holding, prevent cylinder drift, and protect hydraulic circuits under heavy work cycles, this valve is an ideal OEM-replacement solution for contractors, fleet managers, and service shops seeking durability and predictable performance.
Key benefits
- Direct fit and compatibility: Form, fit, and function designed to match OEM requirements for Doosan/Daewoo DX255LC and DX300LC (part nos. 420-00004A / 410114-00050), minimizing installation time and adjustments.
- Safety and reliability: Prevents unexpected load descent and maintains stable hydraulic holding pressure, improving on-site safety during lifting, digging, and transport.
- Robust construction: Manufactured with high-quality materials and precision machining to withstand abrasive, high-pressure service environments and extended duty cycles.
- Quality-controlled performance: Each unit undergoes strict inspection and hydraulic testing to ensure leak-free operation and consistent pressure-holding capability, reducing downtime and maintenance frequency.
- Cost-effective longevity: Offers competitive pricing without sacrificing reliability — helping fleets lower operating costs through fewer replacements and reduced risk of hydraulic failure.
- Support & service: SPARKLING provides technical guidance, installation advice, and aftermarket support to ensure correct selection and integration.
Why choose SPARKLING
Founded in 2013, SPARKLING MACHINERY focuses on high-quality excavator parts with a commitment to stability, precision, and perseverance. Our global network supplies components compatible with top OEMs, and we emphasize strict manufacturing controls, custom solutions, and hands-on technical support. Choosing this hydraulic lock valve means choosing a trusted partner dedicated to performance, safety, and long-term value.
For purchasing, fitment confirmation, or technical support, SPARKLING’s sales and engineering teams are available to help you match the right part and ensure fast, reliable installation.
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📦 Packing
1. Packaging methods: Carton box + Wooden case/Pallet + Anti-rust treatment
2. Export-standard packaging to ensure safety during transportation
3. Custom packaging available upon request
4. Dimensions and weight can be provided for freight calculation
🚚 Shipping
1. Available shipping methods: Sea freight, Air freight, Express delivery (DHL, UPS, FedEx, etc.)
2. LCL (Less than Container Load) and FCL (Full Container Load) options are supported
3. For Russian clients, we can introduce the forwarder agent to you
4. Delivery time: Ships within 1-3 working days after payment (for items in stock)
💳 Payment
1. Accepted methods: T/T, Bank Transfer, PayPal, Alipay, WeChat Pay, Western Union
2. Deposit + balance payment available for large or custom orders
3. Flexible payment options—feel free to contact us for details
📌 Frequently Asked Questions (FAQs)
Q: Which excavator models is this part compatible with?
A: This product is compatible with major brands such as CAT, KOMATSU, HITACHI, and more. Custom specifications are also available.
Q: How can I make sure I’m selecting the correct part?
A: You can send us a photo of the old part, part number, or your excavator model, and we will help you confirm the right match.
Q: Is there a warranty for this product?
A: Yes, we offer a 6-month quality guarantee under normal use.
Get a free quote
We are committed to producing the highest quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.
Sparkling Machinery Co.,Ltd
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Whatsapp: +8613609010879