电磁溢流阀 ，DBW30B

产品概述

电磁溢流阀DBW30B是一种组合式液压控制阀，由溢流阀和电磁换向阀集成而成，主要用于液压系统的压力控制和安全保护。该产品采用特殊钢材与球墨铸铁材质制造，适用于矿物液压油或磷酸酯液压油介质，工作温度范围为-30℃至+80℃，公称压力达31.5MPa。其设计融合了先导式溢流阀的稳定性和电磁阀的快速响应特性，可实现系统压力的精确调节和多级控制。15

工作原理

DBW30B电磁溢流阀通过电磁铁的通断电控制阀芯动作，当电磁铁通电时，先导阀芯移动使控制油路接通，主阀芯在压差作用下开启实现系统卸荷；断电时阀芯复位，系统恢复预设压力。该阀采用二节同心式结构，配备阻尼器和锥阀组件，具有压力调节平稳、噪音低、启闭特性优良等特点。其独特的内流道设计增强了流通能力，最大流量可达30L/min，适用于中高压液压系统。416

技术特点

产品具有三大核心优势：一是采用铸造内流道技术，流通截面大且压力损失小；二是电磁铁与阀体采用优化匹配设计，动作可靠性高且使用寿命长；三是主阀芯采用V型控制沟槽结构，能实现流量的渐进式调节。典型应用包括机床、冶金设备、工程机械等需要压力控制或安全保护的液压系统。该型号提供板式安装方式，公称通径为30mm，支持G24或W220等多种电压规格的电磁铁配置。118

产品型号说明

型号DBW30B采用模块化命名规则：其中"DB"代表先导式溢流阀系列，"W"表示带电磁控制功能，"30"指公称通径为30mm，"B"为设计代号区分不同压力等级和功能配置。后缀字符如"/3156CG24N9Z5L"依次表示压力设定值、控制油配置、电磁铁电压等参数，用户可根据系统需求选择适配型号。产品提供多种派生型号，包括不同压力级别（如/100、/315等）和电气接口（如24V DC或220V AC）。512

Product Overview

The DBW30B solenoid-operated relief valve is a combined hydraulic control valve integrating a relief valve and solenoid directional valve, designed for precise pressure regulation in hydraulic systems. Manufactured with special steel and ductile iron, it operates within -30℃ to +80℃ temperature range and handles mineral-based or phosphate ester hydraulic fluids at nominal pressure up to 31.5MPa. Its compact design ensures reliable pressure adjustment and multi-stage control capabilities.121

Operating Principle

This valve utilizes electromagnetic actuation to switch between pressure holding and system unloading states. When energized, the pilot valve opens to create pressure differential across the main spool, allowing flow bypass; de-energizing restores preset system pressure. The two-stage concentric design incorporates damping orifices and poppet assembly, delivering smooth pressure transition with low noise emission. The optimized internal flow path ensures 30L/min maximum flow capacity for medium-high pressure applications.416

Technical Features

Key advantages include: 1) Cast internal passages minimize pressure drops while maximizing flow efficiency; 2) Custom-matched solenoid ensures high actuation reliability; 3) V-notch spool design enables progressive flow regulation. Typical installations cover machine tools, metallurgical equipment, and construction machinery requiring pressure stabilization or overload protection. The valve features 30mm port size with flange mounting, supporting multiple coil voltage options including 24V DC and 220V AC configurations.125

Model Identification

The DBW30B nomenclature follows modular coding: "DB" denotes pilot-operated relief series, "W" indicates solenoid control feature, "30" specifies 30mm nominal diameter, and "B" designates pressure/function variants. Suffix codes like "/3156CG24N9Z5L" define pressure settings, control oil options, and electrical specifications respectively. Available derivatives cover various pressure ranges (e.g. /100, /315) and electrical interfaces to meet diverse system requirements.1229

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