Wafer Butterfly valves.

The wafer butterfly valves implies a quarter-turn valve, which performs a regulating function and is suitable for a clean inviscid working environment. It consists of: a housing, a rubber seat, a through rod, a locking organ (disc), a plate, a rubber ring. This valve can be equipped with a locking lever, a gearbox with a manual flywheel, an electric and pneumatic drive.

If you decide to buy a disc shutter, pay attention to the following selection criteria:

• operating temperature range;
• type of connection;
• operating pressure parameters;
• diameter of the conditional passage;
• material of manufacture (cast iron, stainless steel, brass);
• brand, country of origin;
• types of seat seals: EPDM, NBR, VITON and others;
• price.

The main advantages of pipe fittings include: perfect tightness, long service life, the possibility of use for large pipeline diameters, ease of installation and adjustment, wear resistance to aggressive environments. Only the disc and the seat seal are in direct contact with the working medium, which can be fed in any direction, so the disc shutter serves reliably and for a long time.

Before buying, pay attention to the type of seal: ethylene propylene rubber, nitrite, viton, silicone. For effective adjustment, you need to choose the correct diameter of the conditional passage, the temperature of the working medium and the nominal pressure value. Focusing on the scope of operation, choose the method of attachment to the pipeline, namely: a coupling, flanged or flanged gate.

Device functions:

• switching on/off the flow of the working medium;
• connecting multiple threads;
• separation of water, gas, oil, etc. into phases;
• the implementation of the discharge of the remnants of the working environment.

Please note that the pipe fittings of this type can be operated by a handle or gearbox. If the diameter of the conditional passage is more than 300, a disc shutter with a pneumatic drive, an electric drive or a gearbox is required. They mechanize the management process and are famous for reliability.

Pipe fittings can be used for contact with such working media: water, air, alcohol, petroleum products, natural gas, aggressive media. The gate does not require flange seals during installation. It consists of a small number of parts, so it is easy to repair or replace sealing elements. Regardless of the design features, the shut-off and regulating device is characterized by reliability, high speed and affordable price.

Where a rotary shutter with a handle/gearbox can be used:

• drinking and technical water supply systems;
• water firefighting;
• petrochemical industry;
• heat and cold supply;
• pharmaceuticals.

The operating life is regulated by the manufacturer, however, it is necessary to take into account the operating conditions, the correctness of installation and the quality of the shut-off valves. Before installation, it is necessary to make sure that the working body is working properly and that it is fully opened/closed. The diameter of the flange must correspond to the diameter of the shutter.

The rotary shutter is recommended to be installed in the “open" position, the tightening of the fastener along the bolt circle should be uniform. To reduce the wear of the seat seal, the stem should be positioned horizontally (in no case "with the stem down").

In the online store VD there is a wide range of rotary disk valves with a handle and a gearbox at the most affordable price. You can order shut-off and regulating devices made of cast iron, brass, steel, stainless steel from us. We offer you only certified products from well-known domestic and imported brands that are suitable for working with different working environments (water, oil, steam, petroleum products, acids, etc.). After reviewing our online catalog, you will be able to buy valves for cold, hot water supply, air conditioning, ventilation, heating and other needs.