The problem

Integral solenoid valves with flow meters reveal pressure leaks and flow deviation only after whole-machine assembly - batches go back for rework; outsourcing pressure, tightness and flow tests separately takes weeks; manual pumping cannot detect micro-leaks or keep records, and nobody can say how flow shifts with water temperature.

Capability

Combined bench tests pressure strength, tightness and thermostatic flow accuracy of integral solenoid water valves / combined valve-flowmeter units on 2 identical stations with vertical quick clamps holding up to 4 samples: series plumbing for flow, independent parallel for pressure, switched by solenoid valves, manual or automatic. High-pressure tightness 0.5-2.5MPa (plunger pump, class 1) with 15-999s dwell and per-station differential monitoring; low-pressure static 0.1-0.4MPa tracked automatically by VFD plus pressure sensor; endurance 0.1-0.6MPa in 1-4 segments of 0-999.9s each with automatic cycle counting. Thermostatic flow at water 20-60 degrees C plus/minus 2K from a 120L insulated stainless tank, comparing 20-80L/min against limits (meter 20-140L/min, 5 percent). CDLF4-160 stainless multistage pump with 3kW VFD and a 3kW/380V Italian plunger booster. Mitsubishi FX3U PLC with Weinview HMI and ForceControl SCADA recording temperature, pressure and flow curves, stopping and logging on deviation; power-fail resume; acrylic guarding; formed-aluminium frame; AC380V/50Hz.

Key specifications

• 用途：集成电磁水阀/组合电磁阀流量计的承压密封、气密性与恒温恒压流量精度综合测试
• 工位：2工位同功能；立式快速夹具压紧接口；串联（流量）/并联（耐压）两种水路，可同测4个样品
• 高压承压：0.5~2.5MPa（柱塞泵手动稳压，精度1级），保压15~999s可设，逐工位压差监控
• 低压静压：0.1~0.4MPa，变频器+压力传感器自动跟踪
• 耐久模式：0.1~0.6MPa高低压1~4段可设，每段0~999.9s，自动记录循环次数
• 流量测试：恒温恒压下20~80L/min，上下限对比判定；流量计量程20~140L/min，精度5%
• 水温控制：常温~60℃±2℃，120L不锈钢保温水箱
• 泵组：CDLF4-160不锈钢立式多级泵（最大1.6MPa）+3kW变频器；意大利柱塞泵3kW/380V高压增压
• 控制：三菱FX3U PLC+威纶触摸屏；力控组态采集水温/水压/流量曲线，异常停机报警并记录失效数据
• 断电保持：记录当前试验次数与状态，重启续测

Applications

Factory inspection of inlet valve assemblies for gas combi boilers and water heaters; incoming and R&D verification at valve suppliers; thermostatic flow accuracy sampling; durability capability build-up for third-party labs

About the manufacturer

Guangdong Endurance Electronic Equipment Co., Ltd provides non-standard customization, drawing confirmation, factory acceptance, on-site installation and commissioning, operation training and lifetime technical service; 12-month warranty and lifetime spare parts supply. Tel: 0760-88500902 / 13416787649. Web: en.zsnaili.com.