Tuya Smart Wi-Fi ZigBee воды газопровода автоматическое отключение клапан контроллер приложение Life пульт дистанционного управления домашней автоматизации
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Все фланцевый клапан DIN f4 f5 литой железный запорный 400 dn 10/16/25 pn
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- Поставщик: Topsun Pipelines (Huangshi) Company Limited
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Характеристики
All flanged DIN f4 f5 valve casting iron gate valve 400 dn 10/16/25 pn gate valve
Product Description
THE INDISPENSABLE VALVE
A valve is a product rarely noticed by the average person, yet it plays an important role in the quality of our life. Each time you turn on a water faucet, use your dishwasher, turn on a gas range or step on the accelerator of your car, you operate a valve. Without modern valve systems, there would be no fresh pure water or automatic heat in your home. There would be no public utilities, and beyond wood and coal, almost no energy of any kind. Plastics would be unheard of, as would many inexpensive consumer products.
By definition, a valve is a device that controls the flow of a fluid. Today's valves can control not only the flow, but the rate, the volume, the pressure or the direction of liquids, gases, slurries or dry materials through a pipeline, chute or similar passageway. They can turn on and turn off, regulate, modulate or isolate. They can range in size from a fraction of an inch to as large as 30 feet in diameter and can vary in complexity from a simple brass valve available at the local hardware store to a precision-designed, highly sophisticated coolant system control valve, made of an exotic metal alloy, in a nuclear reactor.
Valves can control flow of all types, from the thinnest gas to highly corrosive chemicals, superheated steam, abrasive slurries, toxic gases and radio active materials. They can handle temperatures from cryogenic region to molten metal, and pressures from high vacuum to thousands of pounds per square inch.
The valve is one of the most basic and indispensable components of our modern technological society. It is essential to virtually all manufacturing processes and every energy production and supply system. Yet it is one of the oldest products known to man, with a history of thousands of years.
Product Pictures
products range
TopSun offers a comprehensive range of valves and accessories for the water and sewerage industry. Our valves range includes:
*Gate valves, resilient and metal faced DN50-300
*Non return valves DN80-300
*Flap valves DN80-600
* Air valves
* Fire Hydrants
*Buttefly valves
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FAQ
What is the difference between globe valve and gate valve?
Comparison between Gate valve and Globe Valve. Gate valves are used for On-Off control whereas Globe valves in addition can also be used for the flow regulation.Gate valves offer very little resistance to fluid flow in fully open position and also have small pressure drop across the valve. ... The globe valves are not.
What does MJ mean?
MJ stands for Mechanical Joint and is a compression type of fitting. A mechanical joint is a time-saving, easily installed joint that insures long-term, trouble-free performance. Uncomplicated, this joint comprises a gland, gasket and bolts. It requires no mechanical skill to install, is unusually easy and fast to assemble.
When the bolts are tightened, two metal pieces are drawn together, which squeezes a rubber gasket that is between them. This compresses the gasket forcing it to press tightly against the pipe and make a seal. An MJ seal is rated for 350 psi for 2" to 24" fittings, and to 250 psi for 30" to 36" fittings
What are PN10 and PN16?
PN10 and PN16 specify metric flange measurements (such as bolt circle diameter, hole size, bolt size etc) according to such standards as ISO 7005-1 or DIN 2501. Our standard flanges are defined in the English system (inches) and most will not mate up with metric flanges. With Kennedy Valve's state of the art CNC machining capabilities our products can have flanges made to PN10 or PN16 specifications so that a connection can be made between our products and metric products (for example, one of our valves with a PN10 flange end can be attached to some metric pipe that also has a PN10 flanged end)
What is the difference between NRS and OS&Y gate valves?
NRS means Non-Rising Stem. OS&Y means Outside Stem and Yoke. In an NRS valve, the stem will turn to open and close the gate, but the stem does not move up or down as it turns. With a OS&Y valve, as the stem turns, it moves into or out of the valve, which also moves the gate to open or seal the valve.
What is the difference between Cast Iron and Ductile Iron?
Ductile Iron is a newer stronger material, created by the addition of magnesium alloy to the molten iron. If a material can withstand extensive deformation without failing under high tensile stress, it is considered ductile.The result is an iron that is much stronger and harder to break, more corrosion resistant, and is easily machined.
What is a Storz connection?
Storz is a quick connect type of fitting. It lets a fireman attach a hose that has a Storz end to a hydrant with a simple push and twist instead of screwing it onto a threaded end. Storz connections are options on many of our hydrants.
What is an indicator post?
An indicator post is used in a situation (such as fire protection) where it is important to see quickly if the valve is open or closed. The indicator post has a small window which states either open or closed. The indicator post can be vertical where the valve is below the floor level, or it can be horizontal — a wall post — where the valve is on the other side of a wall. An indicator post can optionally come with a hand wheel for opening or closing the valve.
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