What issues should be avoided when purchasing oxygen regulators for cylinders in wholesale in 2026?

When purchasing oxygen regulators for cylinders in large quantities in 2026, the following issues should be avoided:
1、 Selection and parameters do not match
1.1. Pressure range mismatch
The inlet pressure must cover the maximum working pressure of the steel cylinder (usually 15-25 MPa), and the outlet pressure should meet the requirements of the terminal equipment, leaving a 15-20% safety margin to avoid overpressure or underpressure operation.
1.2. Insufficient traffic and Cv value
A small flow rate or Cv value can cause unstable gas supply and valve core oscillation. The total system flow rate and required Cv value should be calculated, and the selection should be slightly higher than the theoretical value to ensure stable gas supply.
1.3. Incompatibility between material and medium
Oxygen has strong oxidizing properties, and valve bodies and seals must be made of anti-oxidation materials (such as brass and stainless steel) and undergo “oil free and clean” treatment to prevent combustion or explosion caused by grease and impurities.

2、 Quality and safety risks
2.1. Leakage and self flow (with pressure climb phenomenon)
Common problems include pressure gauge leakage, valve plate damage, safety valve leakage, etc., which can cause abnormal pressure rise or gas self flow, posing a risk of explosion. Manufacturers should be required to provide leakage test reports (such as bubble leak detection, closure performance testing).
2.2. Accuracy and calibration deficiencies of pressure gauges
The pressure gauge must be regularly calibrated to ensure accurate readings; During transportation, it is easy for the hands of the meter to not return to zero and the glass to break due to vibration. When shipping, communicate with the merchant about safe anti drop packaging measures.
2.3. Improper installation and use
Before installation, it is necessary to blow the interface, slowly open the bottle valve, and check the sealing. During use, it is strictly prohibited to come into contact with grease or tap the pressure reducer. After stopping work, residual pressure should be drained and regular maintenance should be carried out.

3、 Contract and Business Risks
3.1. Technical parameters are not clearly stated in the contract
The model, pressure range, flow rate, interface thread, material, and execution standards of the oxygen regulator should be detailed in the contract to avoid any mismatch with the on-site working conditions after arrival.3.
3.2. Unclear payment and delivery terms
It is recommended to adopt phased payment (such as advance payment+arrival acceptance+installation and commissioning final payment), clarify the delivery time, location, and breach of contract responsibility, and prevent delays or discrepancies in goods.
3.3. Lack of after-sales service and warranty
A warranty period (usually ≥ 6 months), response time, spare parts supply, training services, etc. should be agreed upon to ensure timely handling of faults and reduce downtime losses.