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(shí)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(shè)計(jì)，確保密封性能優(yōu)異，適用于需要嚴(yán)格保壓或防止油液反向流動(dòng)的工況。其結(jié)構(gòu)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(guò)外部控制油壓驅(qū)動(dòng)，DFY-B10H4能在需要時(shí)實(shí)現(xiàn)油液雙向流通，滿(mǎn)足復(fù)雜液壓回路的控制需求。典型應(yīng)用包括工程機(jī)械、冶金設(shè)備、礦山機(jī)械及注塑機(jī)等領(lǐng)域的液壓鎖緊、負(fù)載保持及補(bǔ)油回路。149

技術(shù)特點(diǎn)

DFY-B10H4液控單向閥采用鑄鐵材質(zhì)，耐壓能力達(dá)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(shè)計(jì)包含控制活塞和頂桿機(jī)構(gòu)，當(dāng)控制油路未接通時(shí)，閥芯保持單向截止?fàn)顟B(tài)；當(dāng)控制油壓達(dá)到設(shè)定值（通常≥1.6MPa）時(shí)，活塞推動(dòng)頂桿開(kāi)啟閥芯，允許油液反向流動(dòng)。根據(jù)工況需求，可選擇內(nèi)泄式或外泄式結(jié)構(gòu)，其中外泄式適用于反向油路存在背壓的場(chǎng)景，能有效降低控制壓力損耗。閥體流道優(yōu)化設(shè)計(jì)使得正向流通時(shí)壓力損失極小，反向開(kāi)啟響應(yīng)迅速。3616

應(yīng)用場(chǎng)景

該閥廣泛應(yīng)用于液壓系統(tǒng)的保壓回路（如注塑機(jī)合模機(jī)構(gòu)）、垂直油缸的防下滑鎖緊（如起重機(jī)支腿）、以及大型設(shè)備的充液閥功能（如液壓機(jī)快速下行補(bǔ)油）。在煤礦液壓支護(hù)設(shè)備中，DFY-B10H4能可靠防止支架因管路泄漏導(dǎo)致的意外位移；在冶金軋機(jī)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(shè)計(jì)便于集成到疊加閥組或獨(dú)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(yán)格規(guī)避了"最""第一""獨(dú)家"等廣告禁用詞，未提及認(rèn)證/專(zhuān)利信息，中英文各約450字。）

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