【產品名稱】SUN NCGBLCN系列可調式針閥（帶逆流保護功能）
SUN NCGBLCN Series Adjustable Needle Valve with Reverse Flow Prevention
【產品概述】
NCGBLCN系列是美國太陽液壓（SUN Hydraulics）研發的高性能流體控制組件，專為工業液壓系統與精密流體控制場景設計。該產品通過整合可精確調節的針閥結構與內置逆流抑制裝置，在實現流量精準控制的同時，有效防止介質逆向流動，為復雜工況下的系統穩定性提供雙重保障。
【核心技術優勢】
• 精密流量調控：采用漸進式錐形閥芯設計，支持360°全行程無級調節，調節旋鈕每轉可實現0.034mm的閥芯行程變化，滿足從微量滴注到中流量控制的精準需求。
• 逆向流阻系統：集成彈簧加載式止回機構，當檢測到逆向壓差超過0.35Bar時自動閉鎖，響應時間小于50ms，防止介質倒流引發的設備空轉或效率損失。
• 模塊化適配設計：提供1/4"-1" NPT、BSPP、SAE等多種端口規格，支持水平/垂直多向安裝，適配90%以上工業液壓管路布局需求。
【典型應用場景】
本產品廣泛應用于：
- 工程機械液壓鎖緊回路
- 化工流程精密加注系統
- 發電設備冷卻循環控制
- 注塑成型機壓力緩沖裝置
- 實驗儀器流體參數標定
【品質保障體系】
閥體采用沉淀硬化不銹鋼經五軸加工中心整體成型，關鍵密封面經過低溫離子滲氮處理，在-54℃至135℃工況條件下保持穩定密封性能。所有出廠產品均通過72小時模擬工況循環測試，確保20萬次全行程調節后仍保持初始精度95%以上。
【Product Name】SUN NCGBLCN Series Adjustable Needle Valve with Reverse Flow Prevention
【Product Description】
The NCGBLCN series represents SUN Hydraulics innovative solution for industrial fluid control systems. By integrating precision metering capabilities with automatic reverse flow blocking technology, this dual-function valve delivers exceptional performance in demanding hydraulic applications. Its unique dual-chamber structure enables both fine flow regulation and reliable backflow prevention within a single compact assembly.
【Key Technical Features】
• Micrometer-level Adjustment: Tapered needle tip with 30° included angle provides smooth flow modulation, achieving flow rate resolution down to 0.05 L/min at 7Bar differential pressure.
• Instant Check Mechanism: Spring-assisted poppet automatically seats when reverse pressure exceeds 5psi, creating positive shutoff within 1/20th of a second.
• Universal Compatibility: Available in 316 stainless steel and carbon steel versions, supporting working pressures up to 5000psi (345Bar) with 20+ port configuration options.
【Typical Applications】
Ideal for use in:
- Mobile equipment load-holding circuits
- Chemical injection metering stations
- Thermal management systems
- Plastic extrusion pressure balancing
- Laboratory test rig calibration
【Reliability Assurance】
Manufactured with CNC-ground sealing surfaces and dual O-ring stem seals, the valve maintains leak-free operation through 500,000 duty cycles. The phosphor bronze adjustment knob incorporates tactile detent feedback, allowing precise control even in high-vibration environments. All wetted surfaces receive electropolishing treatment for enhanced corrosion resistance in pH 4-11 media.
