Flash evaporation and cavitation of forged steel valves
- Mar 29, 2019
- Hits: 16
It is often seen that the inside of the valve flap and the valve seat of the throttle valve, such as the forged steel regulating valve and the forged steel pressure reducing valve, is subject to wear...
Silicone rubber sealing materials for forged steel valve
- Mar 27, 2019
- Hits: 13
Silicone rubber (Si or VMQ) is a linear polymer with a silicon-oxygen bond unit (-si-o-si) as the main chain and an organic group as a side group. Due to the development of cutting-edge industries such...
Butyl cyanide rubber material for forged steel valve sealing
- Mar 27, 2019
- Hits: 18
Butyl cyanide rubber (NBR) is an irregular copolymer of butadiene and acrylonitrile monomer synthesized by emulsion polymerization. Its molecular structure is: - (CH2-CH=CH) m-(CH2-CH2-CH) n - CN. Butadiene...
Performance determining index of forged valve sealing materials
- Mar 27, 2019
- Hits: 9
1. Tensile properties Tensile properties are the first properties to be considered for sealing materials, including: tensile strength, tensile stress, elongation at break, and permanent deformation. Tensile...
The importance and development of forged steel valve sealing
- Mar 21, 2019
- Hits: 16
The sealing of fluids (gas, liquid) is a common technology required in various industrial fields. Not only industries such as construction, petrochemical, shipbuilding, machinery manufacturing, energy,...
Taboos and measures in forged steel valves pipeline construction-part two
- Mar 18, 2019
- Hits: 10
Taboo 5: A common forged steel valve flange plate is used for a butterfly valve flange. Consequences: Butterfly valve flange plates and ordinary forged steel valve flange plates vary in size. Some common...
Taboos and measures in forged steel valves pipeline construction-part three
- Mar 18, 2019
- Hits: 10
Taboo 10: The flanges and gaskets of the pipe connections are not strong enough, and the connecting bolts are short or have a small diameter. Heat distribution pipelines use rubber gaskets, cold water...
Taboos and measures in forged steel valves pipeline construction-part one
- Mar 18, 2019
- Hits: 14
Taboo 1: The main materials, equipment and products used in construction lack technical quality identification documents or product certificates that meet the current national or ministerial standards....
Working principle of forged steel check valves
- Mar 15, 2019
- Hits: 17
The forged​ check valve refers to a forged valve that automatically opens and closes the valve flap by means of the flow of the medium itself, and is used to prevent the back flow of the medium,...