Our valves are guaranteed against to defects in all workmanship and material for 12 months from the date of shipment, in case otherwise specified. In this period all of our products claimed by original defects may be returned to our factoryafter notice and authorization by us.If found to be defective, the products will be repaired or replaced at our factory free of charge.Such defects shall be exclusive of the effects of corrosion, erosion, normal wear or improper handling and storage.In case our engineer have field service, the user shall detach and install valves by his cost. Suitability of the material andproducts for the use contemplated by the buyer shall be the buyer&＃39;s responsibility.