化工、制药、水处理及精细化工中的强酸、强碱和高纯度介质，会使普通阀门面临腐蚀、泄漏、寿命短和频繁维护。客户需要的不只是阀门，而是能够应对工况并提高安全性的完整解决方案。EQVC衬塑球阀是我们工业阀门自动化产品中的一项选择。
三项核心技术
稳定动作
阀体与执行机构的连接结构保证长期动作稳定，配合自动化控制系统实现准确响应。
安全结构
倒装式阀轴从结构上防止阀杆被介质压力吹出，提升带压运行安全性。
防腐隔离
阀腔和填料函由衬里完整包覆，隔离介质与金属阀体，减少腐蚀并延长寿命。
参数与配置
遵循GB/T 4213-2024、HG/T及ANSI/ASME B16.5等标准。口径DN15–DN200，压力PN10–PN25或ANSI Class 150。泄漏等级VI级，原文称气泡级密封，适用于对泄漏控制要求高的介质。
阀体采用碳钢或不锈钢加PTFE，球体与阀座采用不锈钢加PTFE或纯PTFE，兼顾金属强度和塑料耐腐蚀性。可选活塞气缸、电动执行器及智能定位器，接入DCS/PLC系统实现远程调控。
从选型到维护
从材料选择到整体方案调试，我们提供选型咨询、技术支持及售后维护。如果需要解决流体控制难题或升级自动化系统，欢迎联系我们。地址：济南市经十东路16888号C3北；官网：http://www.e-lonfly.com.cn。
产品规格表
| 参数 | 原文规格 |
|---|
| 标准 | GB/T 4213-2024, HG/T standards and ANSI/ASME B16.5 |
| 口径 | DN15–DN200 |
| 压力等级 | PN10–PN25; ANSI Class 150 |
| 泄漏等级 | VI, described in the article as bubble-tight sealing |
| 阀体 | Carbon steel or stainless steel with PTFE lining |
| 球体与阀座 | Stainless steel with PTFE, or solid PTFE |
| 执行机构 | Piston cylinder, electric actuator and smart-positioner options |
In chemical, pharmaceutical, water-treatment and fine-chemical processes, fluid-control stability can determine the reliability of an entire production line. Strong acids, strong alkalis and high-purity media can expose conventional valves to corrosion, leakage, short life and frequent maintenance.
Customers need more than an individual valve: they need a complete arrangement that addresses the service conditions and improves system safety. The EQVC lined ball valve is one of the products in our industrial valve automation and fluid-control range.
Why choose this solution?
We provide support throughout the lifecycle, from selection and technical advice to maintenance. The EQVC addresses corrosive and leak-sensitive applications through three principal features.
Stable operation
The connection between the valve body and actuator is designed to maintain consistent movement over long-term service. Combined with the automation system, this supports accurate response.
Safer stem construction
A bottom-entry, blowout-resistant stem arrangement prevents process pressure from ejecting the stem, improving the structural safety of the assembly in pressurized service.
Corrosion isolation
The valve cavity and packing gland are fully lined, isolating the metal body from the medium. This protective barrier is intended to reduce corrosion and extend service life.
EQVC specifications
| Parameter | Published specification |
|---|
| Standards | GB/T 4213-2024, HG/T standards and ANSI/ASME B16.5 |
| Nominal size | DN15–DN200 |
| Pressure rating | PN10–PN25; ANSI Class 150 |
| Leakage class | VI, described in the article as bubble-tight sealing |
| Body | Carbon steel or stainless steel with PTFE lining |
| Ball and seat | Stainless steel with PTFE, or solid PTFE |
| Actuation | Piston cylinder, electric actuator and smart-positioner options |
The combination of metal strength and polymer corrosion resistance supports both small-flow control and larger-line transfer applications. Actuator and positioner options allow integration with DCS or PLC systems for remote control. The article highlights Class VI sealing for toxic, hazardous or costly media.
From components to an integrated system
We apply the same attention to material selection, assembly and commissioning throughout the solution. The EQVC is one example from a broader product range.
If you are addressing a fluid-control problem or upgrading an existing automation system, contact us to discuss a configuration matched to the application.
Address: North side of Building C3, No. 16888 Jingshi East Road, Jinan. Website: http://www.e-lonfly.com.cn
