How do you check the faucet ceramic cartridges operating mechanism?

How Geann perform torsion resistance for each developed cartridges

Geann adopts ASMEA112.18.1, EN817 and AS3718 standards to do torque test for operating mechanism.

Geann rigorously follows the ASMEA112.18.1, EN817, and AS3718 standards for torque testing. Our approach is divided into four key areas: operating torque, cartridge strength, retainer tightening torque, and the effects of overtightening. We consistently aim to exceed the highest benchmarks set by international certifications, ensuring we not only meet diverse customer requirements but also set ourselves the challenge of producing the industry's best cartridges.

1. Operating Torque
Operating torque refers to the force required to open or close the water supply. Different certifications specify varying torque values, such as ASME's three times of 1.7Nm – 5.1 Nm, EN817's 6Nm for 5 minutes, and AS3718's 8Nm for 60 seconds. Our testing procedure involves assembling the cartridge in a fixed body and using specialized tools to measure the torque value. This evaluation is integral, both for new designs and for standardized cartridges, ensuring consistent quality. The operating torque is crucial as it determines the ease of turning on hot or cold water, and its stability is maintained even after extensive life cycle tests.

2. Cartridge Strength
Using the AS3718 standard as an example, we first secure a cartridge in the body. We then apply a set locking torque and exert a force according to the standard. After ensuring all cartridge parts remain intact, we proceed to an air test. In the subsequent stage, we apply maximum force to the cartridge until it breaks, with the peak torque indicated by a red pointer. Notably, even if the handle is damaged, Geann's cartridges are designed to break at a safety point, allowing users to close the water supply using basic tools.

3. Retainer Tightening Torque
After installing the cartridge in the body as per the tightening torque guidelines, we assess the cartridge's stability and sealing effectiveness. Over-tightening can adversely affect the cartridge's life cycle and handle operation, while under-tightening can lead to leaks. We ensure optimal operating torque to maximize cartridge longevity.

4. Effects of Overtightening
Excessive tightening or overlocking the nut can damage the cartridge, leading to handle breakage, leaks, or even component failure. At Geann, we conduct extensive tests to meet global longevity standards. We advise adhering to our guidelines and applying the appropriate torque to prevent such issues.

Reference Standards:

ASMEA112.18.1-5.8.1: Operating Controls
EN817-13: Torsion Resistance Characteristics of Control
AS3718-Clause 4.11: Torque of Operating Mechanism

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