SV/SL10, 液控單向閥
產(chǎn)品概述
SV/SL10系列液控單向閥是一種錐閥式結(jié)構(gòu)的液壓控制元件,主要用于液壓系統(tǒng)中實現(xiàn)油流的單向?qū)ㄅc反向控制。該系列產(chǎn)品采用座式閥設(shè)計,通過液壓控制實現(xiàn)反向流通功能,適用于需要隔離局部壓力回路或防止負(fù)載下滑的工況。其核心結(jié)構(gòu)包括閥體、主閥芯、先導(dǎo)閥芯、壓縮彈簧和控制活塞,確保在高壓環(huán)境下穩(wěn)定工作。SV型為無泄油口設(shè)計,泄漏油內(nèi)部回油;SL型則帶有泄油口,可實現(xiàn)泄漏油外部回油,進(jìn)一步降低控制壓力需求。127
技術(shù)特點
SV/SL10液控單向閥的工作壓力范圍為0.5至31.5MPa,最大流量可達(dá)400L/min,通徑覆蓋10至30mm。其正向流動時允許油液從A口自由流向B口,反向流動則需通過X口輸入控制壓力油推動活塞頂開閥芯實現(xiàn)。SL型通過泄油口Y隔離控制活塞的環(huán)形面積,有效減少開啟所需控制力。產(chǎn)品支持螺紋連接或底板安裝,適配多種液壓系統(tǒng)布局需求。此外,閥體采用鑄鐵材質(zhì),耐壓性能優(yōu)異,適用于油品介質(zhì),工作溫度范圍為常溫至180℃。12627
功能應(yīng)用
該系列液控單向閥廣泛應(yīng)用于液壓系統(tǒng)的保壓、鎖緊及負(fù)載支撐場景。例如,在立式液壓缸中可防止活塞因重力下滑;在回路隔離時能避免管路破裂導(dǎo)致的負(fù)載失控;還可用于大流量排油或充油閥功能。其閉鎖性能可靠,泄漏量少,特別適合冶金設(shè)備、工程機械等對穩(wěn)定性要求較高的領(lǐng)域。通過選配不同開啟壓力的型號,可滿足多樣化工況需求。82129
Product Introduction
The SV/SL10 series hydraulic pilot-operated check valves feature a poppet-type structure, designed for unidirectional flow control in hydraulic systems. These valves allow free flow from port A to B while blocking reverse flow unless pilot pressure is applied to port X. The SV type integrates internal leakage oil return, whereas the SL type incorporates an external drain port (Y) to reduce required pilot pressure. Constructed with robust cast iron bodies, they operate within 0.5-31.5MPa pressure ranges and handle flows up to 400L/min. 126
Key Features
With nominal sizes from 10-30mm, these valves offer threaded or subplate mounting options. The SL variant’s external drain isolates piston annular area, minimizing control force. Internal components include main poppet, pilot poppet, compression spring, and control piston, ensuring precise actuation. Suitable for oil-based media at temperatures up to 180°C, their compact design suits space-constrained installations. The valves maintain zero-leakage sealing even during prolonged pressure holding. 2728
Applications
Ideal for load-holding, cylinder locking, and pressure isolation in industrial machinery. Typical uses include: preventing vertical cylinder drift, protecting against load drops during pipe failures, and enabling high-flow discharge in asymmetrical cylinder systems. Widely adopted in metallurgical presses, lifting equipment, and hydraulic power units requiring fail-safe operation. Customizable opening pressures enhance adaptability across diverse hydraulic circuits. 82029
簡單介紹
SV/SL10 液控單向閥 SV/SL型液控單向閥是錐閥式結(jié)構(gòu)的,在回路中,只允許油流正向通過,反向則是截止。當(dāng)接通控制油口X時,壓力油使錐閥離開閥座,油液可反向流動。 SV型—泄漏油內(nèi)部回油 SL型—泄漏油外部回油 SV10/SL10.SV20/SL20.SV30
SV/SL10 液控單向閥
的詳細(xì)介紹
SV/SL10 液控單向閥
通徑(NG)10~30 壓力至31.5Mpa 流量至400L/min
SV/SL型液控單向閥是錐閥式結(jié)構(gòu)的,在回路中,只允許油流正向通過,反向則是截止。當(dāng)接通控制油口X時,壓力油使錐閥離開閥座,油液可反向流動。
SV型—泄漏油內(nèi)部回油
SL型—泄漏油外部回油
SV10/SL10.SV20/SL20.SV30/SL30
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SV/SL型液控單向閥壓差流量特性圖
注:度驗條件:ν=36cSt;t=50℃

說明
Pst1…先導(dǎo)錐閥開啟需要的油口X的控制壓力(MPa)
Pst…油口X的控制壓力(MPa)
P…活塞面上壓力(MPa)
P1…油口B的壓力(MPa)
p2…油口A的壓力(MPa)
A1…主閥錐面截面積(cm2)
A2…先導(dǎo)閥錐部截面積(cm2)
A3…控制活塞截面積(cm2)
A4…控制活塞桿截面積(僅用于SL型閥)(cm2)
A5…油缸活塞面積(cm2)
AR…油缸活塞環(huán)面積(cm2)
C…系數(shù)(MPa)
F…作用于油缸上的負(fù)截(KN)
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