Common Problems

Common Problems

One-stop Solution for Valve Products

The Golden Maintenance Cycle for Valves

Release time:

Feb 27,2026

During valve operation, a scientifically sound maintenance schedule is paramount to ensuring long-term stable performance and preventing sudden failures. Maintenance intervals vary according to valve type (e.g., gate valves, ball valves, butterfly valves, globe valves) and operating conditions (high temperature, high pressure, corrosive media). 

The optimal maintenance cycle must be flexibly adjusted based on valve type, operating conditions, and usage frequency, adhering to these core principles: 

High-frequency operation valves → Monthly inspection + Comprehensive maintenance every six months. 

Standard industrial valves → Inspection every 3–6 months + Annual disassembly and overhaul. 

Valves in severe conditions → Shorter intervals + Increased online monitoring. 

(1) Routine inspections (daily/weekly)

Inspection items: 

Check for valve leakage (external or internal). 

Verify smooth operation of valve stems and actuators, ensuring no sticking. 

Inspect for loosened bolts or flange connections. 

Assess lubrication status (e.g., stem lubrication for manual valves). 

(2) Periodic maintenance (3–6 months)

Maintenance Tasks: 

Clean valves to remove surface grime and corrosion. 

Replenish grease (e.g., seat and stem of ball valves). 

Verify sealing integrity (e.g., conduct low-pressure seal tests). 

Tighten bolts to prevent vibration-induced loosening. 

(3) Comprehensive Overhaul (1–2 years) 

Maintenance Tasks: 

Dismantle the valve to inspect wear on the valve plug, seat, and seals. 

Replace wear parts (e.g., O-rings, graphite packing, valve seats). 

Recalibrate (e.g., control valve travel, positioner signals). 

Conduct pressure testing (perform seal integrity tests according to API 598 or GB/T 26480). 

(4) Maintenance for Valves in Long-Term Inactive Status 

For valves not in regular use (e.g., standby valves or seasonal equipment): 

Manually operate the valve every six months to prevent stem seizure. 

Apply rust-preventative oil to avoid corrosion of the valve body interior and sealing surfaces. 

Maintain dry conditions to prevent moisture accumulation causing rust (particularly for carbon steel valves). 

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