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  • Steel Pipe and Manufacturing Processes

    Steel Pipe and Manufacturing Processes Introduction The advent of rolling mill technology and its development during the first half of the nineteenth century also heralded in the industrial manufacture of tube and pipe. Initially, rolled strips of sheet were formed into a circular cross section b...
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  • Nominal Pipe Size

    Nominal Pipe Size What is Nominal Pipe Size? Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. The name NPS is based on the earlier “Iron Pipe Size” (IPS) system. That IPS system was established to designate th...
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  • Definition and Details of Pipe

    Definition and Details of Pipe What is a Pipe? Pipe is a hollow tube with round cross section for the conveyance of products. The products include fluids, gas, pellets, powders and more. The word pipe is used as distinguished from tube to apply to tubular products of dimensions commonly used for...
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  • Introduction to Pressure Seal valves

    Introduction to Pressure Seal valves Pressure Seal Valves Pressure seal construction is adopted for Valves for high pressure service, typically in excess of above 170 bar. The unique feature about the pressure seal Bonnet is that the body-Bonnet joints seals improves as the internal pressure in t...
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  • Introduction to Bellow Sealed valves

    Introduction to Bellow Sealed valves 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 noted by the plant engineer. Critical leakage points includ...
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  • Introduction to Butterfly valves

    Introduction to Butterfly valves Butterfly valves A Butterfly valve is a quarter-turn rotational motion valve, that is used to stop, regulate, and start flow. Butterfly valves are easy and fast to open. A 90° rotation of the handle provides a complete closure or opening of the valve. Large Butter...
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  • Introduction to Check valves

    Introduction to 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 of flow will close the valve. Exact operation will vary depending on the type of Check val...
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  • Introduction to Plug valves

    Introduction to Plug valves 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 and outlet ports of the Valve body. If the plug 90° is rotated from the...
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  • Introduction of Ball Valves

    Introduction to Ball valves Ball valves A Ball valve is a quarter-turn rotational motion valve that uses a ball-shaped disk to stop or start flow. If the valve is opened, the ball rotates to a point where the hole through the ball is in line with the valve body inlet and outlet. If the valve is c...
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  • What is butterfly valves

    Principle of operation Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they cost less than other valve designs, and are lighter weight so they need less support. The disc is positioned in the center of the pipe. A rod p...
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  • What is GATE VALVE?

    What is a gate valve? Gate valves are widely used for all types of applications and are suitable for both above-ground and underground installation. Not least for underground installations it is paramount to choose the right type of valve to avoid high replacement costs. Gate valves are design...
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  • Introduction to Globe valves

    Introduction to Globe valves 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 close the flowpath. Conventional Globe valves may be used for isol...
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