ranroswang@hksparkling.com 
+86 138 2341 8469
259-0907 Hydraulic Pump Control Valve for Caterpillar 312D 320D Excavator
The 259-0907 (2590907) Pump Control Valve is a high-precision regulator designed for the main hydraulic pumps of Caterpillar 312D and 320D series excavators. It manages the pump's displacement and flow output, ensuring your machine delivers the right power for digging while maintaining optimal fuel efficiency.
Dear Valued Partners,
Thank you for choosing SPARKLING MACHINERY, your professional supplier for construction machinery brake and transmission parts.
We proudly offer the 259-0907 Hydraulic Pump Control Valve, a critical component for CAT 312D and 320D excavators. This valve precisely adjusts hydraulic pump output according to operating demands, directly affecting machine speed, power and fuel efficiency.
The SPARKLING MACHINERY NEW 259-0907 Hydraulic Pump Control Valve Photo:
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Precise Flow Regulation: Responds instantly to hydraulic load changes, preventing engine stall and ensuring smooth operation.
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OEM Standard Fit: 1:1 dimension match for CAT 259-0907, allowing for direct bolt-on replacement without adjustments.
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Durable Spool Design: Internal spools are precision-ground and hardened to resist wear and prevent hydraulic "sticking."
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Fuel Efficiency: Optimizes pump output to reduce unnecessary engine load, significantly lowering daily fuel costs.
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100% Bench Tested: Every valve is tested for pressure response and leakage to ensure out-of-the-box reliability.
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- Related Parts for CAT 312D / 320D：
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| Category | Description | Part Number |
| Hydraulic | Main Pump Solenoid Valve | 121-1491 |
| Hydraulic | Main Pump Seal Kit (320D) | 272-6789 |
| Engine | C6.4 Fuel Injector | 326-4700 |
| Engine | C6.4 Fuel Injection Pump | 326-4635 |
| Sensors | High Pressure Sensor | 221-8859 |
Q&A
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Q1: Will this valve solve "Slow Hydraulic Response" issues?
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A: Yes. If your pump is failing to up-stroke or down-stroke correctly, replacing the 259-0907 control valve is a common and effective fix for restoring hydraulic speed.
Q2: Does this fit the 320D GC or 320D2 models?
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A: It is a perfect fit for the 320D series. For the 320D2, please provide your Serial Number as the pump configuration may vary.
Q3: Is technical support available for installation?
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A: Absolutely. We provide basic guidance on how to install and bleed air from the control valve to ensure your hydraulic system runs smoothly.
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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