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Tel:021-31200210
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Mobile Phone:18521350577
Contacts:Mr. Li
E-mail:sales@focus-united.com
Addr:No.1644 Husong Road,Fengxian District,Shanghai.

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Floating Ball Valve

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  • Reasonable Price
  • Fast Delivery
  • Good after sales
  • Shanghai Focus-united Group Co., Ltd
  • Tel: 021-31200210
  • Fax: 021-31200211
  • Addr:HuSong Road, FengXian Area, ShangHai

Product Manual

Floating Ball Valve


No. Part Name Carbon Steel Series Stainless Steel Series Low Temperature Steel Series Anti-sulfur Series
Carbon Steel Series Stainless Steel Series
1 Valve Body A216 WCB A351-CF8 CF8M CF3 CF3M A352 LCB LCC GB/T12229A216 WCB A351 CF8M
2 Valve Seat PTFE, RPTFE, sintered carbon fibre, metal + rubber components
3 Ball A105+HCr/ENP A351-CF8 CF8M CF3 CF3M A352 LCBLCC+ENP A105+HCr/ENP A351CF8M+ENP
4 Spring INCONEL 750
5 Stud A193 B7 A193 B8 B8M A320 L7 A193 B7M A193 B8M
6 Gasket Flexible graphite + stainless steel
7 Nut A194 2H A194 8M A194 4 A194 2HM A194 8M
8 Bonnet A216 WCB A351  CF8 CF8M CF3 CF3M A352 LCB LCC GB/T12229A216 WCB A351 CF8M
9 Valve Stem A182 F6a A182 F304 316 A182 F6a A182 F304 A182 F316
10 Bushing Metal with PTFE lining, sintered carbon fibre
11 Packing Seat A182 F6a A182 F6a A182 F6a
12 Packing Flexible graphite, PTFE
13 Packing Gland A216 WCB A351 CF8 CF8M A351 CF8 GB/T12229A216 WCB A351 CF8M
14 Bolt A193 B7 A193 B8 B8M A320 L7 A193 B7M A193 B8M
15 Spacer GB/T 700 Q235A+Zn(Cr)
16 Ring GB/T 1222 65Mn
17 Handle A216 WCB

STRUCTURAL FEATURES
1. Special Seat Design
The floating ball valve adopts the design of flexible seal ring structure. When the medium  pressure is lower, the contact area of seal ring and ball is smaller. so higher sealing ratio is formed at the place where the seal ring and ball contact to ensure reliable sealing. When the medium pressure is higher, the contact area of seal and ball becomes bigger along with the elastic deformation of seal ring, so the seal ring can endure higher medium thrust without being damaged.
http://www.focus-united.com/uploadfile/2016/0917/20160917091335722.jpg
2. Fireproof Structure Design
In case of fire during the use of valve, the seat ring made of PTFE or other non-metal materials will be decomposed or damaged under high temperature and cause higher leakage. The fireproof seal ring is set between ball and seat so that after the valve seat is burnt, the medium will push the ball rapidly towards the downstream metal seal ring to form the auxiliary metal to metal sealing structure, which can effectively control valve leakage. In addition, the middle flange sealing gasket is made of metal wound gasket, which can ensure sealing even under high temperature. The fireproof structure design of floating ball valve conforms to requirements in API 607,spi 6FA,BS 6755 and other standards.
http://www.focus-united.com/uploadfile/2016/0917/20160917091356562.jpg
3. Reliable Sealing Of Valve Stem
The stem is provided with the shoulder at its bottom so that it will not be blown out by the medium even under the extreme conditions such as abnormal pressure rise inside the valve cavity, failure of gland plate and etc. In addition, to avoid leakage after the stem packing is burnt in case of fire, the thrust bearing is set at the place where the stem shoulder and body contact to form a reverse sealing seat. The sealing force of the reverse seal will increase according to the increase of medium pressure, so as to ensure reliable stem sealing under various pressure, prevent leakage and avoid accident spreading.
http://www.focus-united.com/uploadfile/2016/0917/20160917091420843.jpg
The stem adopts V type packing sealing structure. The V type packing can effectively change the pressing force and medium force of the gland into the sealing force of the stem.
According to user requirements, the disc spring loaded packing pressing mechanism can be adopted to make the sealing of stem packing more reliable.
http://www.focus-united.com/uploadfile/2016/0917/20160917091446530.jpg
4. Anti-static Structure
The ball valve is provided with anti-static structure and adopts the static electricity discharge device to directly form a static channel between the ball and body or form a static channel between the ball and body through the stem, so as to discharge the static electricity produced due to friction during the opening and closing of ball and seat through the pipeline, avoiding fire or explosion that may be caused by static spark and ensuring system safety.
http://www.focus-united.com/uploadfile/2016/0917/20160917091512589.jpg
5. Lock And Misoperation Prevention
The manual ball valve can be locked by a lock when it is at the full open or full close position. The 90
°open and close positioning piece with lock hole is designed to avoid valve misoperation caused due to handle operation by non-opearators, and it can also prevent valve opening or closing, or other accidents caused by pipeline vibration or unpredictable factors. It is very effective especially for inflammable factors. It is very effective especially for inflammable and explosive oil, chemical and medical working pipelines or field tubing. The part on the head of the stem that is installed with the handle adopts flat design. When the valve is opened, the handle is parallel to the pipeline, so that the opening and closing indications of the valve are guaranteed to have no error.
http://www.focus-united.com/uploadfile/2016/0917/20160917091532439.jpg

Torque Table
PressureDiameter 15 20 25 40 50 65 80 100 125 150 200
PN1.6 MPa 3 5 10 16 25 50 65 125 250 340 485
PN2.5 MPa 3 5 11 18 30 60 80 140 300 400 680
PN4.0 MPa 5 10 24 35 50 100 150 250 450 585 996
PN6.4 MPa 15 30 50 80 100 200 300 400 / / /
PN10.0 Mpa 19 35 68 130 190 360 460 770 / / /
Note: the data listed is not subject to actual measurement, but for reference only.

PressureDiameter 1/2 3/4 1 1 1/2 2 2 1/2 3 4 5 6 8
Class 150 3 5 11 16 25 50 65 125 250 410 700
Class 300 7 12 26 38 60 120 160 280 600 950 1550
Class 400 15 30 50 90 140 240 350 540 / / /
Class 600 19 35 68 130 190 360 460 770 / / /
Note: the data listed is not subject to actual measurement, but for reference only.

Main Dimensions                                                                                                                        Class 150
DN mm 15 20 25 40 50 65 80 100 125 150 200
NPS in 1/2 3/4 1 11/2 2 21/2 3 4 5 6 8
L RF 108 117 127 165 178 190 203 229 356 394 457
Lo BW 140 152 165 190 216 241 283 305 381 457 521
Manual M 59 63 75 95 107 142 152 178 252 272 342
M0 130 130 160 230 230 400 400 650 1050 1050 1410
Worm and Gear B / / / / / / / / / 292 398
B0 / / / / / / / / / 400 600
B1 / / / / / / / / / 350 350
B2 / / / / / / / / / 115.5 115.5
Pneumatic A 200 204 257 264 340 370 389 594 646 646 781
A1 122 126 162 169 209 239 258 337 437 437 537
A3 326 326 347 420 426 426 590 523 610 610 885
A4 136 136 181 181 257 257 257 287 378 378 530
Electric D / / / / 472 486 579 595 650 739 799
D1 / / / / 377 391 484 500 500 589 649
D0 / / / / 190 190 190 190 400 400 400
(RF) Weight Manual 2.5 3 5 7 10 15 19 33 58 93 160
Pneumatic 10 15.7 19.5 42.8 46.9 50.5 70 92.7 160.7 183.5 276
Electric / / / / 32 35.6 44 55 93 128 195
Main Dimensions                                                                                                                       Class 300
DN mm 15 20 25 40 50 65 80 100 125 150 200
NPS in 1/2 3/4 1 11/2 2 21/2 3 4 5 6 8
L RF 140 152 165 190 216 241 283 305 381 403 502
Lo BW 140 152 165 190 216 241 283 305 381 457 521
Manual M 59 63 75 95 107 142 152 178 252 272 342
M0 130 130 160 230 230 400 400 650 1050 1050 1410
Worm and Gear B / / / / / / / / / 292 398
B0 / / / / / / / / / 400 600
B1 / / / / / / / / / 350 421
B2 / / / / / / / / / 115.5 171
Pneumatic A 200 204 257 264 340 379 452 594 646 744 920
A1 122 126 162 169 209 248 295 375 437 500 615
A3 326 326 347 420 426 426 590 523 610 610 885
A4 136 136 181 181 257 257 257 287 378 378 530
Electric D / / / / 472 486 579 595 650 739 799
D1 / / / / 377 391 484 500 500 589 649
D0 / / / / 190 190 190 190 400 400 400
(RF) Weight Manual 3 4 6 11 15 24 30 55 81 118 200
Pneumatic 10 15.7 20 40.9 43.9 51.9 68 99.4 177.5 207.5 381
Electric / / / / 29 37 42 77 116 143 235
Main Dimensions                                                                                                                        Class 600
DN mm 15 20 25 40 50 65 80 100
NPS in 1/2 3/4 1 11/2 2 21/2 3 4
L RF 165 190 216 241 292 330 356 406(432)
Lo BW 165 190 216 241 292 330 356 406(432)
Manual M 59 63 75 95 142 154 184 209
M0 160 160 230 400 400 650 650 1050
Worm and Gear B / / / / / / 292 398
B0 / / / / / / 400 600
B1 / / / / / / 350 421
B2 / / / / / / 115.5 171
Pneumatic A 200 204 241 264 340 379 452 584
A1 122 145 146 169 209 248 295 375
A3 283 283 283 350 590 590 523 610
A4 136 181 181 181 257 257 287 378
Electric D / / / / 472 599 599 632
D1 / / / / 377 4491 449 472
D0 / / / / 190 190 190 190
(RF) Weight Manual 8 11 15 19 25 32 48 76
Pneumatic 17.2 21 24 32 68 75 101.3 177.5
Electric / / / / 60 67 83 111






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