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Advantages of V-port Valves
Advantages of V-port Valves
2020-09-18

The V-ball valves or V-port ball valves are similar to traditional ball in which there is a V-notch on a ball-shaped disc to control flow by a rotating quarter-turn motion. The “V-port" is a particular design that bring about precise flow and the ability to regulate and control flow by V balls of  different degrees. These special valves are used in a wide range of chemical applications, including the most challenging services with many advantages.   Flow Modulating The accuracy of V-ball valves provides equal percentage flow characteristics. As the ball rotates, desired flow rates can be achieved by positioning the ball anywhere between 0° and 90°.   Bubble tight shutoff V-ball valves have the ability to close tightly. Therefore, no other shutoff valves is required when using a V-ball valve on a globe valve.   Lower pressure drop V-ball valves also have a higher coefficient of flow (Cv) than the same size globe valve, which directs the flow and uses a plug to control the flow through the valve. This means that the flow rate achieved by one shut-off valve can be achieved with a smaller V-ball size.   Higher shutoff pressure. A 90°rotation of the ball allows the V-ball to close at a higher operating pressure. This therefore allows the use of lower torque actuators, resulting in cost savings and increased efficiency for the end user.

Know and Know More About Changeover Valve
Know and Know More About Changeover Valve
2020-09-11

There are quite a few types of changeover valves, and according to different standards, there are different subdivisions. But in general, it is mainly four kinds, for motorized changeover valve, manual changeover valve, solenoid valve and electro-hydraulic changeover valve.   1. What is a changeover valve?   Changeover valve, from a professional point of view, is a kind of direction-change valve. It is mainly used to achieve the flow of hydraulic oil, cut off the machine changeover operations, pressure relieving, as well as sequential action control, so its use is very wide.   2. The working principle of reversing valve   The changeover valve uses a  driving mechanism outside the valve to rotate the drive shaft, and then activates the valve plate, etc. So that the fluid can flow into the outlet of the lower part of the valve, and can be changed from time to time to achieve the purpose of periodically changing the flow direction.   3. Changeover valve classification  (1) Motorized changeover valve, it is also known as a stroke valve.    (2) Electromagnetic changeover valve, electromagnetic changeover valve is the use of electromagnetic attraction to manipulate the spool changeover control valve.    (3) Electro-hydraulic changeover valve, electro-hydraulic changeover valve is a composite valve composed of solenoid valve and hydraulic changeover valve.    (4) Manual changeover valve, manual changeover valve is a changeover control valve with a manual lever to manipulate the spool shift direction-changing valve.  

How to extend the service life of lined valves?
How to extend the service life of lined valves?
2020-09-01

Among the anti-corrosion materials, PTFE has incomparable excellent performance. In addition to outstanding chemical stability, it also has satisfactory anti-fouling and anti-stickiness, small dynamic and static friction coefficient, good anti-wear performance. Using it as a valve opening and closing the sealing material, the friction between the sealing surface and required operating torque will be reduced, hence product life increases. the application scope can also be extended to the food, pharmaceutical industry and so on. Fluorine lined valves, also known as anti-corrosion valves, are usually found in harsh working conditions. The media is either toxic and harmful chemicals, or pretty corrosive acids and bases or organic solvents. That means improper use and operation will elicit significant economic losses and serious consequences. Applicable media: various concentrations of acid and alkali salt and certain organic solvents. Fluorine is extolled as the world's most ideal anti-corrosion materials, has been widely used in the rotational molding of large equipment and piping lining. Correct use and maintenance of the valve can extend the service life of fluorine lined valves, then what can be done to effectively protect it? 1. Carefully read the instruction manual before use. 2. Use it within the range of pressure, temperature and media given by the nameplate or instruction. 3. To prevent fluorine lined valves from excessive piping stresses due to temperature changes, temperature changes should be minimized and U-shaped expansion joints should be added before and after the valve. 4. For some unstable and easily decomposed media (such media will expand after decomposition,  resulting in an abnormal pressure rise) and media that can cause valve damage or leakage, measures should be taken to eliminate or limit the factors that cause the decomposition of unstable media. 5. For fluorine lined valves in pipelines of toxic, flammable, explosive, highly corrosive media, it is strictly prohibited to replace the packing under pressure. Even the valves are designed with sealing part, it is not recommended to replace the packing under pressure either. 6. For pipelines with self-combustible media, measures should be taken to ensure that the ambient and working temperatures do not exceed the self-combustibility point of the media to avoid the danger from sunlight or external fires.

Pressure Seal Bonnet Gate Valve
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Pressure Seal Bonnet Gate Valve BW 8 Inch 2500LB

  • Payment:

    30% T/T When Order, 70% T/T Before Shipment
  • Product Origin:

    China
  • Color:

    Customization
  • Shipping Port:

    Shanghai China
  • Lead Time:

    35~60 days Ex Works After Order Confirmation
  • Material:

    Alloy Steel Gate Valve WC6
  • Method of Operation:

    Gear Operated Gate Valve
Inquiry now
Product Detail

The 8 inch Class 2500 gate valve is designed with pressure seal bonnet, butt weld connection, and gearbox operation. The 8 inch gate valve has carbon steel WCB body and trim 5.


Quick Detail

Type

Gate Valve

Size

8''

Design Pressure

ANSI 2500

Construction

Pressure Seal Bonnet, Flexible Wedge, Metal to Metal Seat

ConnectionType

Butt Weld (SW)

OperationType

Gearbox Operation

Body Material

A217 WC6

TrimMaterial

Trim 5

Design Code

API 600

Face to Face Dimension

ASME B16.10

End Connection

ASME B16.25

Pressure & Temp

ASME B16.34

Medium

Water, Oil and Gas

Origin

China


Dimension & Material

PSB Gate Valve With Butt Weld End

NPS      DN Class 2 2 1/2 3 4 6 8 10 12 14 16 18 20 24
50 65 80 100 150 200 250 300 350 400 450 500 600
L(RF) 900LB 368 419 381 457 610 737 838 965 1029 1130
1500LB 368 419 470 546 705 832 991 1130 1257 1384
2500LB 451 508 578 673 917 1022 1270
L1(BW) 900LB 216 254 305 355 508 660 787 914 991 1092 1346 1473 1600
1500LB 216 254 305 406 559 711 864 991 1067 1194 1697
2500LB 279 330 368 457 610 762 914 1041 1118 1245
L2(RTJ) 900LB 371 422 384 460 613 740 841 968 1038 1140
1500LB 371 422 473 549 711 841 1000 1146 1276 1407
2500LB 454 514 584 683 927 1038 1292
H(Opne) 900LB 554 637 680 796 1084 1372 1494 1550 1960 2210
1500LB 554 637 767 875 1094 1372 1655 1834 2150 2260 2460 2721 2940
2500LB 610 654 753 850 1254 1374 1685 1894 2226 2382 2585
W 900LB 300 350 350 400 560 460* 610* 610* 610* 760*
1500LB 300 450 450 560 305* 460* 610* 610* 760* 760*
2500LB 500 500 600 600 460* 460* 610*
Weight   (RF) 900LB 50 84 92 154 341 622 950 1295 1720 2380
1500LB 60 91 128 182 394 795 1370 2120 2800 3870
2500LB 121 175 195 229 720 1295 2250
Weight   (BW) 900LB 39 64 82 120 266 524 760 1090 1450 2018
1500LB 46 71 85 130 292 578 974 1615 2010 2815 3315 4150 5219
2500LB 88 135 144 158 500 892 1550 1978 2580 3780 5988
*Manual gear operator is recommended



No. Part WCB WC6 WC9  C5 CF8 CF8M
1 Body A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M
2 Seat A182 F6a A182 F22 A182 F22 A182 F5 A182 F304 A182 F316
3 Wedge A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M
4 Stem A182 F6a SAEHNV3 A182 F304 A182 F316
5 Stuffing Box A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M
6 Seal Ring ANSI 316L Flexible Graphite+316
7 Split Ring Steel F6 F6 F6 A182 F304 F316
8 Back Ring Steel Steel Steel Steel SS SS
9 Bolt A193 B7 A193 B7 A193 B7 A193 B7 A193 B8 A193 B8
10 Nut A194 2H A194 2H A194 2H A194 2H A194 Gr.8 A194 Gr.8
11 Yoke A216 WCB A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M
12 Bolt A193 B7 A193 B7 A193 B7 A193 B7 A193 B8 A193 B8
13 Nut A194 2H A194 2H A194 2H A194 2H A194 Gr.8 A194 Gr.8
14 Packing Plate ANSI 410 ANSI 410 ANSI 410 ANSI 410 ANSI 304 ANSI 316
15 Packing Flexible Graphite(Braided and Ring) or PTFE
16 Split Pin Steel Steel Steel Steel Steel Steel
17 Eyebolt A193 B7 A193 B7 A193 B7 A193 B7 A193 B8 A193 B8
18 Gland A182 F6 A182 F6 A182 F6 A182 F6 A182 F304 A182 F316
19 Gland Flange A105 A105 A105 A105 A182 F304 A182 F316
20 Nut A194 2H A194 2H A194 2H A194 2H A194 Gr.8 A194 Gr.8
21 Stud A193 B7 A193 B7 A193 B7 A193 B7 A193 B7 A193 B7
22 Stem Nut Ni-resist A439-D2
23 Gear Box Purchased
24 Protector Steel
25 Nameplate ANSI 304
26 Rivet ANSI 304


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    If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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