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Help CenterCompact Plunger Valve for Excavator Hydraulic Oil Circuit Mobile Machinery 350 Bar 1/2" NPT
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Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our Compact Plunger Valve specifically engineered for excavator hydraulic oil circuits and other mobile machinery applications. With a rated pressure of 350 Bar and a standard 1/2" NPT connection, this valve delivers reliable flow control in demanding environments. As a manufacturer established in 2016 with ISO9001 certification, we combine precision manufacturing with rigorous quality testing to ensure every valve meets the highest standards of performance and durability. Our valve is designed to reduce space requirements while maintaining full load capacity, making it the ideal choice for compact hydraulic systems where every millimeter counts.
Key Features & Technical Specifications
- Compact Design: Space-saving footprint allows easy integration into tight excavator compartments and mobile machinery layouts.
- High Pressure Capability: Rated for 350 Bar (5076 psi) continuous operation, suitable for heavy-duty hydraulic circuits.
- Standard Connection: 1/2" NPT threaded ports for quick and leak-free installation with common hydraulic fittings.
- Durable Materials: Constructed from high-strength carbon steel or optional stainless steel, with hardened internal components for extended service life.
- Reliable Sealing: Multiple seal options including NBR, FKM, or PTFE to handle various hydraulic oil temperatures and fluid compatibility.
- Low Internal Leakage: Precision-lapped plunger and seat ensure minimal internal leakage, improving system efficiency and safety.
- Versatile Operation: Available in normally open, normally closed, and flow control configurations to suit different circuit requirements.
| Parameter | Specification |
|---|---|
| Model | ZBPV-350-12N |
| Working Pressure | 350 Bar (5076 psi) |
| Port Size | 1/2" NPT Female |
| Flow Capacity | Up to 40 L/min (depending on configuration) |
| Body Material | Carbon Steel (C45) / Stainless Steel (304/316 optional) |
| Seal Material | NBR (standard) / FKM / PTFE (customizable) |
| Operating Temperature | -20°C to +80°C (extended ranges available) |
| Media | Hydraulic Oil, Mineral Oil, Water-Glycol |
| Certification | ISO9001:2015 |
Customer Benefits – Our compact plunger valve directly addresses the pain points of excavator maintenance engineers and hydraulic system designers. The reduced size frees up valuable space for additional components or simpler routing of hoses. The 350 Bar rating ensures compatibility with high-pressure systems common in modern mobile machinery. Precise flow control capability reduces energy waste and heat generation, contributing to lower fuel consumption and longer component life. The valve's robust construction withstands shock loads and vibration, typical in excavation and construction environments, thus minimizing downtime.
Installation Flexibility: The 1/2" NPT threaded connection is widely accepted in the industry, allowing direct replacement of existing valves without adapter plates. Optional add-on features like manual override, position indicator, or solenoid actuation (upon request) make this valve adaptable to both manual and automated control systems.
Quality Assurance: Every valve undergoes a 100% pressure test and functional check before shipment. Our manufacturing process follows strict ISO9001 guidelines, ensuring repeatability and consistency across production batches. Raw materials are sourced from certified suppliers, and all critical dimensions are controlled with CMM equipment.
Trust & Reliability
Since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. has been serving global customers with an annual export value of US$1 million to US$1.5 million. Our products are shipped to over 20 markets including North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and more. We are proud to be a direct manufacturer with in-house R&D, machining, and assembly capabilities. This vertical integration allows us to offer competitive pricing, fast lead times, and customized solutions. Our ISO9001 certification reflects our commitment to quality management. We typically ship from Shanghai, Guangzhou, Hong Kong, or Beijing ports, ensuring convenient logistics worldwide. Choose Zhibang Valve for a partner that understands your hydraulic circuit needs and delivers consistent, high-performance components.
Frequently Asked Questions
-
Q: What is the maximum operating pressure of this valve?
A: The valve is rated for 350 Bar (5076 psi) continuous operation. Burst pressure is typically 1.5 times the rated pressure, but we recommend staying within the rated limit for safety. -
Q: Does this valve work with biodegradable hydraulic oils?
A: Yes, the standard NBR seals are compatible with most mineral-based and biodegradable hydraulic oils. For special fluids like phosphate esters, please specify FKM or PTFE seals when ordering. -
Q: Can I use this valve for a backhoe excavator with 1/2" hoses?
A: Absolutely. The 1/2" NPT connection is a common size for many compact excavators and backhoes. However, please verify your system's flow rate to ensure the valve's flow capacity (up to 40 L/min) is sufficient. -
Q: Is the valve spring-return or detented?
A: Both configurations are available. The standard model is spring-return (normally closed or normally open). Detented (maintained position) versions can be produced upon request. -
Q: What is the warranty period?
A: We offer a standard 12-month warranty from the date of shipment against manufacturing defects. Extended warranty options are available for bulk orders. -
Q: Do you provide samples for testing?
A: Yes, sample orders are welcome. We can produce a small batch for evaluation. Please contact our sales team for sample pricing and lead time. -
Q: How do I select the correct seal material for high-temperature applications?
A: For continuous operation above 80°C, we recommend FKM (Viton®) seals rated up to 200°C. PTFE seals are also an option for extreme temperatures or aggressive chemicals. Please provide your operating temperature range during ordering. -
Q: Can the valve be customized with a different port size?
A: Yes, while the standard is 1/2" NPT, we can customize the port size to 3/8" NPT, 3/4" NPT, or other thread standards (BSP, SAE) for minimum order quantities. Contact us for details.
Contact us today for more information or to request a quote. Shanghai Zhibang Valve – your reliable partner in hydraulic control.
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