Qingdao Fluido Industrial Co. Ltd.

FLUIDO offers valves with threaded, flanged, welded, and hygienic connections—reliable sealing, durable construction, and global OEM/ODM support.

FLUIDO, trusted expansion joint manufacturer, supplies pipeline expansion joints, compensators, bellows, rubber & metal types for industrial piping systems.

Pin vs Pinless butterfly valves differ in stem-to-disc connection: pin-type uses metal pins; pinless uses direct stem-disc fit, affecting torque, sealing, and maintenance.

Flange leaks with 304/316 stainless bolts occur due to thermal expansion mismatch, insufficient bolt strength, and creep relaxation reducing gasket preload over time.

FLUIDO is a professional flange manufacturer offering high-quality loose flanges and slip-on flanges for reliable piping connections across industrial applications.

FLUIDO, a leading valve manufacturer, supplies high-quality foot valves and check valves for water, oil, and industrial applications worldwide.

The flange sealing waterline is an annular groove structure on the flange sealing surface. Its core function is to enhance the sealing performance through three major mechanisms.

One-way valves are mainly used to control the one-way flow of fluids, while check valves are mainly used to stop the backflow of fluids.