china backflow preventer - China Factory, Suppliers, Manufacturers

china backflow preventer, , , ,. The product will supply to all over the world, such as Europe, America, Australia,, ,, .

Inspection items for dual plate type check valves

Inspection items, technical requriements and inspection methods for wafer dual plate check valves
Protection Grade IP

1. What does an IP protection level mean? IP (Ingress Protection) protection level is the dustproof and waterproof capability classification of electrical equipment defined by the international sta...
TWS Valve Completed the Valve World Asia 2017 Exhibiton

TWS Valve Attended the Valve World Asia 2017 Exhibition from September 20- September 21,During the Exhibition,Many of our old Client came and visited us ,Communicate for the long term cooperation,...
What are the options for butterfly valve surface coating? What are the characteristics of each?

Corrosion is one of the important elements that cause butterfly valve damage. In butterfly valve protection, butterfly valve corrosion protection is an important issue to consider. For metal butter...
‌Heat Treatment Process for WCB Castings‌

WCB, a carbon steel casting material conforming to ASTM A216 Grade WCB, undergoes a standardized heat treatment process to achieve the required mechanical properties, dimensional stability, and res...
The Flow Characteristics OF The Regulating Valve

The flow characteristics of the regulating valve are mainly four kinds of flow characteristics such as linear percentage fast opening and parabola. When installed in the actual control process, the...