A regular, scheduled maintenance program will ensure that all the valves and the tank are safe for handling the high pressure liquid and its vapor form. Perform a daily visual inspection to locate any defects in the tank or hoses. To handle NH 3 safely, all equipment must function properly. The most important valves and components that must be routinely checked are listed below. Valve - Be sure valves are functional and will shut off.
Any leak detected in the valve is cause for immediate repair or replacement.
The valve should be removed every five years and inspected for internal corrosion and thread deterioration. Pressure Gauge - Check the consistency with other tanks of similar volume. Make sure the lens is clean and the dial face is clearly readable. Fixed Liquid Level Gauge - Clean, repair or replace as needed. An inaccurate reading, leaking at the seal, or unreadable lens should be repaired or the defective item replaced.