Nrs - China Manufacturers, Factory, Suppliers

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

Main classification and service conditions of valve sealing materials

Valve sealing is an important part of the whole valve, its main purpose is to prevent leakage, the valve sealing seat is also called sealing ring, it is an organization that is directly in contact ...
What are the selection conditions for electric butterfly valve and pneumatic butterfly valve?

Advantages and uses of electric butterfly valves Electric butterfly valve is a very common device for pipeline flow regulation, which has a wide range of uses and involves many fields, such ...
Why do gate valves require upper sealing devices?

When the valve is fully open, a sealing device that prevents the medium from leaking to the stuffing box is called the upper sealing device. When the gate valve, globe valve and throttle valve are ...
How to choose a butterfly valve supplier

When selecting a butterfly valve supplier, one must consider the specific requirements of the project and the quality of the products offered. With a variety of options on the market, including waf...
Inspection items for dual plate type check valves

Inspection items, technical requriements and inspection methods for wafer dual plate check valves
Classification of Air Valves

Air valves GPQW4X-10Q are applied to the pipeline exhaust in independent heating systems, centralized heating systems, heating boilers, central air conditioners, floor heating systems, solar heatin...