Reliability and durability test

Test Background

During long-term operation, valves need to withstand frequent opening and closing, pressure fluctuations, temperature changes, and vibration impacts. Insufficient reliability may lead to jamming, leakage, or control failure.

Test Introduction

The reliability and durability tests simulate various stresses that the valve will bear throughout its life cycle through opening-closing cycle life tests, thermal-cold cycle tests, damp-heat aging tests, vibration impact tests, and shell fatigue pressure-resistance tests.

Testing Objectives

Verify the mechanical durability of the valve during opening-closing cycles

Evaluate the impact of thermal-cold cycles on the sealing performance

Ensure no corrosion and no jamming in a hot and humid environment

Verify the functional integrity after vibration and shock

Determine the pressure fatigue life of the housing

Test Standards

IEC 60068-2 Environmental test standard

GB/T 2423 Vibration and shock test

ISO 19879 Hydraulic valve durability test

T/CESA 1249.2-2023 Reliability requirements

Applicable Products/Fields

Suitable for various liquid-cooled valves, solenoid valves, control valves, shut-off valves, etc.

Test Content

Opening and closing cycle life test: 5000-10000 opening and closing cycles

Thermal cycling test: Temperature cycling from -40°C to 85°C, 100 cycles

Wet-heat aging test: 85°C/85%RH, 1000 hours

Vibration and shock test: Vibration from 5 to 2000Hz, 50g shock

Housing fatigue pressure resistance: Pressure pulse from 0 to 1.5 times the working pressure, 100,000 cycles

Project Advantages

Capable of applying combined stresses of temperature, pressure and vibration simultaneously

Real-time monitoring of leakage and action time during testing

Provides service life prediction and failure analysis

Laboratory Configuration

Opening and closing life test bench

High and low temperature alternating humidity test chamber

Electromagnetic vibration test system

Pressure pulse test bench

Leakage test system (comparison before and after the test)

FAQ
Q: How to evaluate the coil life of the solenoid valve? A: Evaluate the insulation life and action reliability of the coil through continuous power-on and power-off cycle tests combined with temperature rise tests.