After-sales service

1. On-site installation and commissioning services
Installation Guidance: Technical personnel provide on-site instruction for valve positioning, pipeline connection, actuator wiring, and positioner calibration.
System commissioning: test switch operation, valve position feedback, leakage conditions, and control accuracy; adjust the control valve positioner and verify switch signals.
Issue Resolution: On-site troubleshooting of sticking and leakage caused by improper installation, pipeline stress, or other factors.

2. Service during the warranty period
Warranty Period: Standard valves are covered by a 12–18 month warranty (calculated from the date of shipment or commissioning, subject to the terms stipulated in the contract).
Fault Response: Upon receiving a service request, perform remote troubleshooting over the phone; for critical faults, dispatch an engineer to the site.
Free repair and replacement: For quality issues not caused by human error, we provide free repair and replacement of parts or the entire unit; this does not include consumable components such as gaskets, packing, sealing rings, and diaphragms.
Regular Follow-up: After the project is commissioned, we conduct follow-up visits to assess operational status, gather feedback on operating conditions, and provide usage recommendations.

3. Value-added services after the warranty period
Fault Repair: On-site service is available for a fee, including troubleshooting internal leaks, external leaks, valve sticking, and actuator malfunctions.
Supply of Wear Parts: Long-term availability of packing, sealing rings, gaskets, springs, and positioner components.
Factory return for repair: valve disassembly and cleaning, sealing surface lapping, component replacement, pressure re‑testing, and factory re‑calibration.
Retrofit and Upgrade: Retrofit existing valves by replacing actuators and upgrading sealing materials to suit new operating conditions, thereby reducing the cost of new procurement.

4. Training Services
Training for customer operations and maintenance personnel: key points for daily valve inspections, basic fault diagnosis, packing replacement, and fundamental commissioning.
Explanation of common malfunctions: internal leakage, external leakage, incomplete valve closure, and control fluctuations—covering their causes and emergency troubleshooting procedures.

5. Spare Parts and Technical Documentation Services
Provide a list of spare parts and components, supporting rapid ordering of spare parts.
We provide certificates of conformity, material test reports, hydrostatic test reports, and maintenance records on a long-term basis.