Shut-off valves are a device for shutting off the flow of the working medium in pipelines. It differs in design - parallel and wedge gate valves, plug and ball valves, gates, butterfly valves. The body and locking element are made of cast iron, steel, stainless steel, bronze, brass, depending on the type of working medium. Applications - water, gas, steam, oil products, gasoline, kerosene, fuel, ammonia, alkalis, acids, salt solutions, hydrogen sulfide. Installation to the pipeline - flange, welding, interflange. Opening and closing control - manual or electric.
Shut-off valve classification
Shut-off valves are classified according to:
• Applications – steam, oil, gas, chemical, marine.
• Material of body parts - cast iron, steel, titanium, stainless steel, plastic, ceramic, non-ferrous metals;
• Structures of the body – through passage, angular;
• Designs of connecting pipes - flanged, coupling, fitting, for welding;
Types of stop valves
Shut-off valves are of various types and design varieties, but at the same time they can perform the same functions.
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A gate valve is a type of shut-off valve, where a gate in the form of a wedge, disk or sheet acts as a working body. According to the diameter of the sealing rings relative to the pipeline, they are divided into full bore and narrowed ones. According to the shape of the shutter, they are divided into parallel - sliding single-disk or double-disk, wedge - with a solid rigid or elastic or double-disk composite wedge. According to the type of spindle movement, there are retractable - the spindle performs a screw or translational movement, non-retractable - rotational movement.
- A ball valve is a type of shut-off valve where the working body is a valve in the form of a body of revolution, rotating around an axis perpendicular to the axis of the medium flow.
- A butterfly valve is a type of shutoff valve with a disc-shaped valve that rotates on an axis located in the passage. They are used with reduced tightness requirements, in large-diameter pipelines with low medium pressure.
Purpose and scope
Shut-off valves are used in many areas of industry and the national economy. According to their purpose, they are divided into gas pipeline, water supply, drain, sewer.
In addition to pipeline valves for normal operating conditions, you can buy stop valves from us for special operating conditions: corrosive, aggressive or toxic, high and ultra-high steam parameters, high pressures, low temperatures, viscous and abrasive media, bulk materials, for vacuum or oil refineries.
Such valves are made of bronze, cast iron, alloyed and high-alloyed steels, which have heat resistance, corrosion resistance or have a protective coating.
Shut-off valve designation
On the valve body, the brand is indicated in the form of an index. Designations are applied by casting or branding.
The marking of stop valves contains the following parameters and characteristics:
1. Type of fittings;
2. Nominal passage diameter;
3. Working pressure;
4. Body material
5. Material of sealing rings.
Buy stop valves of Ukrainian production
You can buy shut-off valves for water, steam, gas, oil pipelines, steam pipelines, food, fire, for heating mains from us. The equipment is being tested, checked on a stand with a pressure gauge for compliance with the parameters.
Included in delivery: product, passport combined with instructions for use and maintenance. Shut-off valves are guaranteed for 12 months, subject to compliance with the operating conditions.
The price of shut-off valves depends on the type, pressure, diameter, tightness class. For wholesale, there is a system of discounts of 5-15% from the price list. To calculate the cost of valves - call the manager or send a request by mail.
