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Class 150~1500 forged steel trunnion ball valve

trunnion ball valve

1.Forged ball valve feature
KOJO forged ball valve,the forging material can ensure sufficient rigidity and strength under maximum rated operation pressure  without inherent flaw of cast. Enough wall thikness of separate body and adaptation of high strength tie bolts are convenient for valve maintenance and sufficient to bear the stress of pipe.The internal parts of valve are carefully designed and selected to ensure  reliability under all kinds of work condition.

2.Anti-fire safe design
When the trunnion ball valve be used normally,its sealed by seat and ball surface,seat retainer sealed by O-ring and body,this is soft sealed and reliable sealing.When the seat and O-ring are burnt,the seat retainer and body will be sealed by expanded graphite.Thus act anti-fire safe purpose.

3.Anti-static device
In order to prevent friction among ball,stem and PTFE that generates static electricity which may light the combustibles and explosives that cause an accident,in this ball valve,static-conduction spring is set between the stem and the ball,the stem and the body.Thus static electricity is conducted to ground and system safety is secured.

4.Free leakage of body Sealed construction
The connective position of valve body and bonnet is double sealed by gasket and O-ring,on this base,such factors as fire,high temperature,shock and uneven opening or closing of the torque all can't induce external leakage.

5.Low torque in operation
The self-lubricated bearings are installed at the friction of stem,resulting in wear resistance,fiexibility of operation and low torque.

6. Double block&bleed(DBB)
When ball is full open or close position,the transmitter substance in center cavity of body can be released by drainage and emptying devices.In addition,the over loaded pressure in the center cavity of valve can be  released to low pressure end by self relief seat.

7.Emergency sealing
Compound injection holes are designed and compound injection valves are installed at locations of stem/cap and body support of side valve.When sealing of stem or seat is damaged to induce leakage,the compound can be used to do the second time sealing.A concealed check valve is installed in side of each compound injection valve to prevent compound from out flowing due to the action of transmitter substance.The top of the compound injection valve is the connector for fast connection with compound injection gun.

8.Extension stem
For the underground installed valve,the stem can be lengthened and for the convenience of operation the corresponding compound injection nozzle and drainage valve can be extended to the top of valve.

9.Automatic body cavity relief
When the body pressure going up un-normally as the unstable factor,the trunnion ball valve downstream seat will be pushed by unnormal pressure,and the release the un-normally pressure automatically,it doesn't damage to the sealing of upstream seat.

10.Various driving types
The top pad of valve designed according to ISO 5211,which is convenient for connection and exchange of various drivers.The common driving types are manual,electrical,pneumatic and pneumatic/hydraulic

CLASS 150~1500 FORGED STEEL TRUNNION MOUNTED BALL VALVE

Dimensions & weights
Class 150
Size inch 2 3 4 6 8 10 12 14 16 18 20
L(RTJ) mm 178 203 229 394 457 533 610 686 762 864 914
H mm 153 195 213 500 568 605 662 725 770 970 935
H1 mm 139 178 191 220 289 318 382 430 470 489 528
L0 mm 400 600 850 400* 400* 400* 400* 800* 800* 600* 500*
Weight mm 30 50 90 203 289 450 588 676 864 764 911

 

Dimensions & weights
Class 300
Size inch 2 3 4 6 8 10 12 14 16 18 20
L mm 216 283 305 403 502 568 648 762 838 914 911
L(RTJ) mm 232 299 321 419 518 584 664 778 854 930 1010
H mm 153 195 213 500 569 605 662 725 770 970 935
H1 mm 139 178 191 220 289 318 382 430 470 489 528
L0 mm 600 1250 1300 400* 400* 400* 400* 800* 800* 600* 500
Weight mm 30 50 90 203 289 450 588 676 864 764 911

 

Dimensions & weights
Class 600
Size inch 2 3 4 6 8 10 12 14 16 18 20
L mm 292 356 432 559 660 787 838 889 991 1092 1194
L(RTJ) mm 295 359 435 562 663 790 841 892 994 1095 1200
H mm 153 195 213 500 569 645 702 750 815 970 1065
H1 mm 119 145 180 220 289 318 382 430 470 489 561
L0 mm 600 1250 1300 400* 400* 457* 457* 800* 800* 600* 600*
Weight mm 32 64 122 267 521 773 1118 1700 1970 1218 1646

 

Dimensions & weights
Class 900
Size inch 2 3 4 6 8 10 12 14 16 18 20
L mm 368 381 457 610 737 838 965 1029 1130 1210 1321
L(RTJ) mm 372 384 460 613 780 841 968 1038 1140 1232 1334
H mm 162 205 239 591 700 700 820 950 990 1030 1200
H1 mm 119 145 180 213 254 327 368 442 483 523 615
L0 mm 600 1250 1300 450* 600* 750* 750* 600* 600* 600* 600*
Weight mm 48 78 138 275 547 847 1224 1676 2083 2694 3515

 

Dimensions & weights
Class 1500
Size inch 2 3 4 6 8 10 12 14 16 18 20
L mm 368 470 546 705 832 991 1130 1257 1384 1537 1664
L(RTJ) mm 372 473 549 711 841 1000 1146 1276 1407 1559 1686
H mm 197 254 291 655 660 735 860 950 1065 1235 1275
H1 mm 119 145 180 213 278 384 440 442 483 576 615
L0 mm 600 1250 1300 760* 450* 450* 660* 600* 750* 750* 750*
Weight mm 55 97 162 328 668 936 1408 1861 2392 3220 4491

 

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established in 1997.the main products are forged steel and cast stell ball valve,gate valve,check valve and so on