Qingdao Fluido Industrial Co. Ltd.

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.

Learn how air valves solve the problem of air in water pipes. Get practical insights into types, installation, and how to keep pipelines safe and efficient.

Enhance valve performance and durability with smart surface treatment. Learn the best technologies and solutions for every stage of valve production.

Learn what causes water hammer & easy fixes to protect your plumbing. Click for expert tips!

Unravel valve orifice size mysteries! Learn its impact on flow, pressure, and efficiency in this guide. Click to optimize your system!