液控單向閥，DFY-B10H4

產(chǎn)品概述

液控單向閥DFY-B10H4是一種高性能液壓控制元件，主要用于液壓系統(tǒng)中實現(xiàn)油流的單向控制與反向解鎖功能。該閥采用錐形閥芯設計，確保密封性能優(yōu)異，適用于需要嚴格保壓或防止油液反向流動的工況。其結構緊湊，安裝形式靈活，支持板式或管式連接，可適配多種液壓系統(tǒng)配置。通過外部控制油壓驅動，DFY-B10H4能在需要時實現(xiàn)油液雙向流通，滿足復雜液壓回路的控制需求。典型應用包括工程機械、冶金設備、礦山機械及注塑機等領域的液壓鎖緊、負載保持及補油回路。149

技術特點

DFY-B10H4液控單向閥采用鑄鐵材質(zhì)，耐壓能力達31.5MPa，工作溫度范圍為-20℃至+80℃，兼容礦物油或磷酸酯液壓油等介質(zhì)。其內(nèi)部設計包含控制活塞和頂桿機構，當控制油路未接通時，閥芯保持單向截止狀態(tài)；當控制油壓達到設定值（通常≥1.6MPa）時，活塞推動頂桿開啟閥芯，允許油液反向流動。根據(jù)工況需求，可選擇內(nèi)泄式或外泄式結構，其中外泄式適用于反向油路存在背壓的場景，能有效降低控制壓力損耗。閥體流道優(yōu)化設計使得正向流通時壓力損失極小，反向開啟響應迅速。3616

應用場景

該閥廣泛應用于液壓系統(tǒng)的保壓回路（如注塑機合模機構）、垂直油缸的防下滑鎖緊（如起重機支腿）、以及大型設備的充液閥功能（如液壓機快速下行補油）。在煤礦液壓支護設備中，DFY-B10H4能可靠防止支架因管路泄漏導致的意外位移；在冶金軋機系統(tǒng)中，可配合換向閥組成液壓鎖，確保軋輥定位精度。其模塊化設計便于集成到疊加閥組或獨立安裝，適配10mm通徑的油路需求。122426

Product Overview

The DFY-B10H4 pilot-operated check valve is a high-performance hydraulic component designed for unidirectional flow control and pressure retention in fluid power systems. Featuring a conical poppet design, it ensures reliable sealing and is ideal for applications requiring strict pressure holding or reverse flow prevention. With compact construction and flexible mounting options (subplate or threaded connections), this valve adapts to diverse hydraulic configurations. The external pilot pressure actuation enables bidirectional flow when needed, making it suitable for complex circuits such as load-holding, cylinder locking, and replenishing in industrial machinery. Common applications include construction equipment, metal-forming presses, and mining hydraulic supports.1919

Technical Features

Constructed from cast iron, the DFY-B10H4 withstands pressures up to 31.5MPa and operates within -20℃ to +80℃, compatible with mineral oils or phosphate ester fluids. Its internal mechanism integrates a control piston and push rod: In neutral state, the valve blocks reverse flow; when pilot pressure exceeds the threshold (typically ≥1.6MPa), the piston forces the poppet open for reverse flow. Optional internal or external drain configurations cater to different backpressure conditions, with external drain reducing pilot pressure requirements. The optimized flow path minimizes pressure drop during forward flow while ensuring rapid response during pilot-assisted opening.31623

Typical Applications

This valve excels in pressure-holding circuits (e.g., injection molding machine clamps), vertical cylinder anti-drift locking (e.g., crane outriggers), and rapid-fill functions (e.g., hydraulic press downstroke). In coal mine roof supports, it prevents unintended movement caused by line leakage; for rolling mills, it forms hydraulic locks with directional valves to ensure roll positioning accuracy. The modular design allows stackable or standalone installation, meeting 10mm port size requirements across mobile and industrial hydraulic systems.122426

（注：以上內(nèi)容嚴格規(guī)避了"最""第一""獨家"等廣告禁用詞，未提及認證/專利信息，中英文各約450字。）

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