Valve Gearbox Quality Control & Testing
Valve gearbox quality control at YOYAGE covers every step, from incoming and in-process inspection to torque testing and final checks before delivery.
Laboratory & Inspection Equipment
YOYAGE gearboxes are checked with dedicated inspection equipment, covering torque output, dimensions, coating, and protection rating, before final approval for delivery.
Torque Test Bench
Tests the output torque of part-turn and multi-turn gearboxes.
Metal Mechanical Property Testing
Mechanical property testing of metal components ensures material strength and reliability.
Coating Adhesion Test
Checks coating adhesion on painted housings to confirm the coating bond meets C3/C5 requirements.
IP Protection Test
Tests the water and dust protection performance of the gearbox.
Metallic Materials Testing
Verifies metal material composition and metallographic structure for critical gearbox parts.
Final Inspection
Pre-delivery quality check covering surface coating protection, dimensions, and defect review to ensure final acceptance.
Gearboxes also pass systematic appearance, structure, and function checks before packing and delivery.
Explore YOYAGE Capabilities
Learn more about YOYAGE, how we manufacture valve gearboxes, the industries we serve, and our certifications.
About YOYAGE
20+ years of valve gearbox manufacturing focus, with in-house production and systematic quality inspection.
About the Company
Manufacturing
Inside the 9,900+ m² production base: machining, assembly, and painting lines with 50+ precision machines.
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Industries
Serving water management, oil and gas, power generation, chemical processing, and more industries — proven in complex and demanding operating conditions.
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Certifications
CE and ISO 9001 certified, backed by 20+ design and invention patents, with product test reports available for valve gearbox orders.
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YOYAGE gearboxes pass incoming, in-process, and final inspection with torque testing before delivery. Send your requirements to get a quotation.