Test Specification

Test Specification

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Global SmartLock Group is committed to providing high-quality products to our customers and distributors. In order to ensure our HVAC/R fittings meet our rigorous standards, we’ve put them through 10 different types of tests:

Torque Test

Leak Test

Tube Separation Test

Pressure Resistance Test

Tube Burst Test

Vacuum Test

Temperature Test

Dissimilar Metal Test

Vibration Test

Refrigerant Gas and Oil Test

A Summary of Our Findings


Torque Test

Objective: Torque confirmation test by fastening body and nut with torque wrench until the designed 0.5mm gap

Specification: Fastening torque data on website: www.smartlockfitting.com

Conclusion: No change under 0.5mm gap — Satisfied with the designed torque data


Leak Tests

Objectives: Leak test in water tank with air pressure of 60kgf/cm² (870psi) applied, and leak test with digital gauge under pressure of 60kgf/cm² (870psi) applied with R410a gas

Specifications: No bubble during of 48 hours with the air pressure of 60kgf/cm² (870psi), and | Starting data – Finish data | ≤ 1.5 kgf/cm² under conditions of 240 hours with 60kgf/cm² (870psi)

Conclusions: No bubbles (or leak) found, and no leak with 60kgf/cm² (870psi)


Tube Separation Test

Objective: Tube separation test under pressure of max. 29,000 psi

Specification: No separation during and after 5 cycle of 3 minutes with designed pressure

Conclusion: No tube separation or any deformation


Pressure Resistance Test

Objective: Pressure resistance test (fitting deformation test)

Specification: No deformation during 3 minutes of 150kgf/cm² (2,176psi) pressure, repeated 20 times

Conclusion: No deformation found with 150kgf/cm² (2,176psi)


Tube Burst Test

Objective: Check fitting for damages or deformation until tube burst

Specification: Increase pressure until tube burst

Conclusion: No damage to fitting when the tube burst


Vacuum Test

Objective: Vacuum test with 10-3 torr (1 micron)

Specification: No change after 72 hours with 10-3 torr (1 micron)

Conclusion: No break in the vacuum


Temperature Tests

Objectives: Low temperature test under the pressure of 43 ㎏ f/cm² (624psi), and high temperature test under the pressure of 43 ㎏ f/cm² (624psi)

Specifications: | ① - ② | ≤ 1.5 kgf/cm² under conditions of 24 hours with 43kgf/cm² (624psi) pressure and -30ºC (-22ºF), and | ① - ② | ≤ 1.5kgf/cm² for 24 hours with 43kgf/cm² (624psi) pressure and 120ºC (248ºF)

Conclusions: No leak under low temperatures of -30ºC (-22ºF), and no leak under high temperatures of 120ºC (248ºF)


Dissimilar Metal Test

Objective: Saltwater test for dissimilar metal corrosion and fitting body corrosion damage

Specification: | ① - ② | ≤ 0.15 kgf/cm² under conditions of 960 Hours with salt water immersion (NaCl

5%) at 35ºC (95ºF), 43kgf/cm² (624psi)

Conclusions: No leak (no pressure change) means no corrosion for dissimilar metal connection inside fitting, and fittings do not leak under 20 years of environmental condition despite corrosion on the outside body outside


Vibration Test

Objective: No leakage after 72 hours with 50Hz vibration

Specification: No leakage with pressure of 60kgf/cm² (870psi) after 72 hours with 50Hz vibration

Conclusion: No damage found in 45 tubes (total 90 fittings) after vibrating at 50 Hz for 72 hours


Refrigerant Gas and Oil Test

Objective: Test with Refrigerant (R1234yf, R134A, R410A, R22, R32)

Conclusion: No leakage found

The Significance of Our Test Results

Our test results are significant because they confirm the quality and reliability of our product. We can confidently say that our products are well-made, consistent, and will perform under demanding conditions. Our exhaustive testing sets us apart from competitors, making SmartLock fittings the premier choice for HVAC/R contractors. Get in touch with our team to learn more about our metal-to-metal technology.

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