When should the adjusting screw on an oxygen regulator be oiled?

• A. When the regulator is new
• B. Frequently for smooth operation
• C. Only if it appears rusted
• D. Never under any condition

Answer: (D)

Oiling the adjusting screw on an oxygen regulator is never advisable due to safety concerns. Oxygen is highly reactive, and the presence of oil or grease can lead to dangerous situations, including explosions or fires. Regulators are designed to operate without lubrication because the introduction of oil can compromise the regulator's integrity and spark a hazardous reaction.

Proper maintenance of oxygen regulators focuses on ensuring clean, residue-free mechanisms. Instead of oiling, regular inspections should be conducted to check for any signs of wear or damage. This attention to safe practices prevents the risk associated with the combination of oil and oxygen under pressure. Therefore, the choice of never oiling the adjusting screw aligns with best practices for safety in handling oxygen equipment.