Customization: | Available |
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Media: | Gas, Water,Oil, Steam |
Material: | Stainless Steel, Carbon Steel, Cast Iron |
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In the world of valves, ball valves are known for their compact, durable design and reliable, fast acting on/off control. Ball valves utilize a ball with a hole (known as a port) drilled through the center to control the flow of media. The ball is rotated 90 degrees to align the port with the valve body and allow media to flow through the valve. To close the valve, the ball is rotated 90 degrees back to the closed position.
All ball valves rely on the use of two seats, usually made of polytetrafluoroethylene (PTFE), to hold the ball in place and create a tight seal to prevent media from leaking through the valve.
Floating and trunnion are two basic types of ball valve designs. Floating ball valves are the most common type of valve used in industrial piping systems. These valves are designed so that as the seats begin to wear the pressure from the media flowing through the valve will force the ball against the downstream seat to maintain a tight seal.
In trunnion ball valves, the ball is fixed in place by bearings that prohibit it from floating downstream. A spring-loaded seat mechanism ensures that the valve remains leak-tight as the seat inevitably begins to wear down.
Before we dive into the details of floating ball valve design, let's define the key components of a ball valve:
Most ball valves are of the floating variety. Floating ball valves are supported by cupped seats that create a tight seal between the valve body and the ball. The ball itself is suspended in the media it regulates and is kept in position by cup-like seats, usually made of a thermoplastic. These seats form a tight seal between the ball and the valve body.
Floating ball valves are capable of providing bi-directional sealing, meaning that the ball can move freely enough to halt media flowing in either direction. This type of valve is lightweight, economical and versatile, and is found in applications including oil, gas, water, steam and petrochemicals.
DN mm |
Flange drilling |
L mm |
H mm |
H3 mm |
F mm |
F1 mm |
F2 mm |
40 | PN10/16 | 240 | 200 | 263 | 14 | 16 | 30 |
50 | PN10/16 | 250 | 209 | 292 | 14 | 16 | 30 |
65 | PN10/16 | 270 | 243 | 336 | 17 | 20 | 34 |
80 | PN10/16 | 280 | 282 | 382 | 17 | 20 | 34 |
100 | PN10/16 | 300 | 319 | 429 | 19 | 22 | 34 |
125 | PN10/16 | 325 | 346 | 471 | 19 | 22 | 34 |
150 | PN10/16 | 350 | 403 | 493 | 19 | 22 | 34 |
200 | PN10/16 | 400 | 490 | 660 | 24 | 28 | 34 |
250 | PN10/16 | 450 | 664 | 864 | 27 | 31 | 47 |
300 | PN10/16 | 500 | 740 | 968 | 27 | 31 | 47 |
350 | PN10/16 | 550 | 947 | 1207 | 32 | 37 | 55 |
400 | PN10/16 | 600 | 959 | 1249 | 32 | 37 | 55 |
450 | PN10/16 | 650 | 958 | 1278 | 32 | 37 | 55 |
500 | PN10/16 | 700 | 958 | 1316 | 32 | 37 | 55 |