Qingdao Fluido Industrial Co. Ltd.

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. Different in function, structure and working principle, these two types of valves have their unique application value and importance in different fields and scenarios

Coating gate valves can effectively prevent scaling by creating a protective barrier between the valve's internal surfaces and scaling-causing fluids. This barrier can reduce mineral adhesion, neutralize reactive ions, and protect against corrosion.

Globe valves are linear motion valves that regulate fluid flow in pipelines. They are named for their spherical body shape, which houses a movable disk or plug mechanism. This mechanism controls the flow of fluid by closing, opening, or partially obstructing the valve's flow path

Lift Check Valves prevent reverse flow or backflow of liquid and ensuring smooth, uninterrupted flow through the system. The operation of a lift check valve is entirely automated, relying on gravity and media pressure to work.

Black iron pipe fittings generally come in 150# and 300# pressure ratings. Class 150 fittings are commonly used in applications like natural gas, water distribution, and low-pressure steam systems, offering a standard pressure rating of 150 PSI at ambient temperatures. Class 300 fittings are designed for higher pressures and may be UL listed. 

Pressure reducing valves maintain constant downstream pressure by adjusting flow via a spring, diaphragm, and pilot system responding to pressure changes; correct adjustment requires measuring downstream pressure, incremental tuning of the valve’s adjustment screw, and matching thermal expansion tank pressure in closed systems; improper settings cause appliance damage, water waste, and safety risks.

V-port ball valves offer precise flow control with a V-notch design, ideal for media with particles and throttling; O-port ball valves provide quick on/off control with full-bore flow paths, best for clean media and shut-off applications.

The 7 main types of gas valves used in the oil and gas industry are ball, gate, globe, check, butterfly, plug, and slam shut valves—each designed for specific control, isolation, or safety functions across upstream to downstream operations.