YF-L20H4-S型溢流閥是一款專為工業(yè)液壓系統(tǒng)設(shè)計的壓力控制裝置，通過自主優(yōu)化閥芯結(jié)構(gòu)和壓力調(diào)節(jié)模塊，有效實(shí)現(xiàn)系統(tǒng)壓力的精確管理與過載保護(hù)功能。本產(chǎn)品采用模塊化設(shè)計理念，在確保性能穩(wěn)定的同時兼顧安裝維護(hù)的便捷性，適用于多種復(fù)雜工況下的壓力調(diào)控需求。

核心設(shè)計優(yōu)勢體現(xiàn)在三方面：其一，采用階梯式阻尼調(diào)節(jié)技術(shù)，壓力波動范圍可控制在±0.15MPa內(nèi)，顯著提升系統(tǒng)運(yùn)行的平穩(wěn)性；其二，閥體選用高強(qiáng)度合金鋼經(jīng)精密加工成型，配合特殊硬化處理工藝，關(guān)鍵密封面耐磨損性能提升40%以上；其三，創(chuàng)新的導(dǎo)閥-主閥聯(lián)動結(jié)構(gòu)設(shè)計，使響應(yīng)速度較傳統(tǒng)型號縮短30ms，同時具備更寬泛的調(diào)壓范圍（0.5-31.5MPa）。產(chǎn)品內(nèi)部流道經(jīng)CFD流體動力學(xué)優(yōu)化，有效降低能量損耗約18%。

該型號配置多功能壓力補(bǔ)償裝置，可自動修正油溫變化引起的壓力偏移，確保在-20℃至80℃環(huán)境溫度下的控制精度。閥體表面經(jīng)多層防護(hù)處理，具備優(yōu)良的抗腐蝕性能，適用于高濕度、多粉塵等惡劣工業(yè)環(huán)境。安裝接口符合ISO 228/1標(biāo)準(zhǔn)規(guī)范，支持水平或垂直安裝方式。

典型應(yīng)用包括：工程機(jī)械液壓控制系統(tǒng)、冶金設(shè)備壓力保持回路、船舶甲板機(jī)械動力單元以及注塑成型機(jī)的壓力調(diào)節(jié)系統(tǒng)。建議配合過濾精度不低于25μm的液壓油使用，定期檢查先導(dǎo)閥調(diào)節(jié)機(jī)構(gòu)的工作狀態(tài)。當(dāng)系統(tǒng)壓力出現(xiàn)異常波動時，可通過旋轉(zhuǎn)調(diào)節(jié)手柄進(jìn)行在線校準(zhǔn)。

注意事項：安裝前需徹底清潔管道，調(diào)試時應(yīng)分級緩慢升壓。建議每運(yùn)行2000小時或半年進(jìn)行預(yù)防性維護(hù)，重點(diǎn)檢查主閥芯運(yùn)動靈活度及密封件狀態(tài)。禁止在超出額定壓力范圍或介質(zhì)污染度超標(biāo)情況下使用。

YF-L20H4-S Relief Valve Product Introduction (English Version)

The YF-L20H4-S relief valve is a pressure control device specifically engineered for industrial hydraulic systems. Through proprietary optimization of spool structure and pressure regulation modules, it achieves precise system pressure management and reliable overload protection. Featuring modular design principles, this product ensures operational stability while simplifying installation and maintenance procedures, making it suitable for diverse pressure regulation requirements under complex working conditions.

Three core design advantages distinguish this model: Firstly, the step-type damping adjustment technology maintains pressure fluctuation within ±0.15MPa, significantly enhancing system stability. Secondly, the valve body, precision-machined from high-strength alloy steel with specialized hardening treatment, demonstrates 40% improved wear resistance on critical sealing surfaces. Thirdly, the innovative pilot-main valve linkage structure reduces response time by 30ms compared to conventional models, while offering an extended pressure adjustment range (0.5-31.5MPa). Internally optimized through CFD fluid dynamics analysis, the flow channels reduce energy loss by approximately 18%.

Equipped with multi-functional pressure compensation, the valve automatically corrects pressure deviations caused by oil temperature variations (-20℃ to 80℃ operational range). The corrosion-resistant surface treatment provides reliable protection in humid or dusty industrial environments. Standardized ISO 228/1 installation interfaces support both horizontal and vertical mounting orientations.

Typical applications encompass: construction machinery hydraulic control systems, pressure maintenance circuits in metallurgical equipment, marine deck machinery power units, and pressure regulation systems for injection molding machines. For optimal performance, use with hydraulic oil filtered to 25μm or finer. Periodic inspection of pilot valve adjustment mechanisms is recommended. Online calibration through regulator handle rotation is available during abnormal pressure fluctuations.

Usage guidelines: Thoroughly clean pipelines before installation. Conduct pressure testing with gradual step-by-step increments. Preventive maintenance every 2,000 operating hours or six months should include spool mobility checks and seal condition evaluation. Operation beyond rated pressure specifications or with contaminated