SOLH VNA201 is a self-developed standardized 2/2-way external pilot fluid control valve with balanced poppet structure. Driven by 0.2~0.7MPa pilot air, it achieves zero differential pressure startup and bidirectional fluid flow, delivering stable switching under low pressure, vacuum and fluctuating air supply. Optimized internal passages bring large flow capacity and low pressure loss. Equipped with wear-resistant seals and solid valve body verified by million-cycle durability tests, it operates lubrication-free and maintenance-free with anti-fouling performance. Compact lightweight body allows all-angle mounting with 3/8" and 1/2" port sizes, supporting air pilot and solenoid pilot control. Compatible with compressed air, inert gas, light oil and neutral air-liquid mixed fluids, it is widely used for cylinder buffering, cooling lubrication, high-speed exhaust and pipeline on-off of machine tools, packaging & cleaning automation equipment.
VNA201 series standardized high-performance 2-way fluid control valve is independently developed and manufactured by SOLH under Richge Technology. Drawing on decades of R&D experience in fluid control and pneumatic components plus strict full-process quality control system, this valve adopts 2/2-way external pilot structure. Customized for compressed air, air-liquid mixing pipelines and neutral fluid circuits, it delivers stable zero-pressure startup and high-efficiency large-flow switching performance. As a cost-effective universal switching valve launched for automated equipment and industrial pipeline systems, VNA201 ensures long-term stable operation across diverse industrial working conditions.
Core Product Advantages
1. External Pilot + Balanced Poppet, Reliable Zero-Pressure Startup
Optimized balanced poppet structure matched with external pilot drive enables stable opening at 0 MPa, unaffected by medium pressure fluctuation. Bidirectional smooth fluid passage supports reliable operation under full working ranges including low pressure, vacuum and high pressure, completely solving valve malfunction risks caused by unstable air supply.
2. Large Flow & Low Pressure Loss for High-Efficiency Pipelines
Precisely optimized internal flow channels by Richge fluid engineers realize outstanding flow capacity with minimal pressure loss. Under identical port sizes, its flow performance outperforms ordinary competing valves. Perfect for large-diameter, high-flow fluid loops to accelerate switching speed and reduce overall equipment energy consumption.
3. Ultra-Long Service Life & Maintenance-Free Design
Premium wear-resistant sealing components and impact-resistant solid valve body pass million-cycle durability verification tests from Richge lab. Fully lubrication-free operation with excellent anti-fouling capacity, no jamming or leakage during continuous long-hour operation, effectively cutting later maintenance costs and meeting non-stop industrial production demands.
4. Compact Lightweight Body with Flexible Universal Installation
Mini lightweight outline supports mounting at any angle. Standardized threaded ports simplify wiring and piping modification for all automation equipment, pneumatic systems and fluid pipeline retrofit projects. Standard mass production guarantees strong interchangeability for zero barriers during model selection and field installation.
5. Carefully Selected Materials with Full Quality Monitoring
All core parts including valve body and seals go through multiple rounds of inspection per Richge industrial-grade QC standards. Material formulas are compatible with compressed air, inert gas, light oil and air-liquid mixed neutral fluids, with stable temperature and pressure resistance to avoid medium contamination and pipeline leakage, securing safe system operation.
Full Technical Specifications (Richge SOLH Standard)
Parameter Item
Specification Details
Valve Configuration
2/2 Way, external pilot operated
Standard Function
Normally Closed NC (closed without pilot air/power; open with pilot supply); Normally Open NO optional
-- Automated machinery: Packaging machines, machine tools, cleaning equipment and matched air compressor pipelines
-- Air-liquid mixed working conditions: Light oil transportation and combined air-fluid linkage control special fluid loops
One Sentence Summary
SOLH VNA201 fluid control valve integrates zero-pressure startup, bidirectional flow, high efficient large flow, million-cycle service life and maintenance-free performance. As a standardized industrial fluid control component independently developed by Richge Technology, it provides stable and reliable on-off control solutions for all industrial equipment and pipeline systems, embodying Richge’s brand philosophy of "craft premium products to empower industrial manufacturing".
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