What is Fluorocarbon Coating for Fasteners
- Jan 20, 2017
- Hits: 144
Fluorocarbon Coating (PTFE, Xylan, Teflon, Emralon ) Fluorocarbon Coating is an organic coating consisting of solid lubricant dispersed in an organic binder and dissolved in a specially formulated...
What are Check Valves
- Jan 20, 2017
- Hits: 30
CHECK VALVES Check valves are "automatic" valves that open with forward flow and close with reverse flow. The pressure of the fluid passing through a system opens the valve, while any reversal...
What are Bellows Sealed Valves
- Jan 12, 2017
- Hits: 142
BELLOW(S) SEAL(ED) VALVES Leakage at various points in pipelines found in chemical plants creates emissions. All such leakage points can be detected using various methods and instruments and should be...
What are Plug Valves
- Jan 10, 2017
- Hits: 50
PLUG VALVES A Plug Valve is a quarter-turn rotational motion Valve that use a tapered or cylindrical plug to stop or start flow. In the open position, the plug-passage is in one line with the inlet...
Valve Trim Material Temperature Limits
- Jan 05, 2017
- Hits: 80
Valve Trim Material, Temperature Limits (Degrees Fahrenheit) Material Lower/℃ Lower/°F Upper/℃ Upper/°F Type 304 Stainless Steel -268 -450 316 600...
What are Globe Valves
- Dec 30, 2016
- Hits: 57
GLOBE VALVES A Globe valves is a linear motion valve and are primarily designed to stop, start and regulate flow. The disk of a Globe valve can be totally removed from the flowpath or it can completely...
What are Gate Valves
- Dec 29, 2016
- Hits: 82
GATE VALVES Gate valves are mainly designed to start or stop flow, when a straight-line flow of fluid and minimum flow restriction are needed. In service, these valves generally are either...
What is the difference between metal seated butterfly valve and resilient seated butterfly valve
- Oct 26, 2016
- Hits: 277
For butterfly valve with metal seat, both sealing surfaces of valve are metal material or other hard material , which has not so good sealing performance, but has good mechanical properties,...
Advantages vs. Disadvantages of Plug Valve
- Oct 17, 2016
- Hits: 2876
In the chemical and petrochemical industry, plug valve and ball valve are not interchangeable to each other. In terms of market demand, the rate of average use demand of them is about 8 : 1, meaning,...