Trunnion Ball Valve

Trunnion ball valves is a ball valve with fixed/trunnion supported/trunnion mounted ball to control flow through it. Trunnion ball valve double block and bleed (DBB)/DIB; view drawings, dimension & price.

Our trunnion ball valves are utilized in some of the most demanding processes in oil, gas, petrochemical and water treatment etc.

Advantages of trunnion ball design is the lower operating torque, ease of operation, minimized seat wear, superior sealing performance at both high and low pressure.

Size
2"-48"
Pressure Rating
Class 150-2500
End Connections
Flanged, BW, HUB
3 piece forged trunnion ball valve
3 piece forged trunnion ball valve 2 piece cast steel trunnion mounted ball valve trunnion ball valve features trunnion dbb ball valve drawing selfe relieving seat trunnion ball valve drawing-1 trunnion ball valve drawing

STANDARD APPLICATIONS:

Design and Manufacture API 6D Face to Face Dimension API 6D
Inspection and Testing API 6D/API 598 Wall Thickness API 6D
Flange End Dimension ANSI/ASME B16.5, B16.47 Butt Weld End ANSI/ASME B16.25
Fire Safe Design API 607/API 6FA Body Material Nace MR 0175

BODY CONSTRUCTION:

Side Entry, Bolted Body, 2Pieces or 3 Pieces Body;

Top Entry Trunnion Ball Valve

Welded Body Ball Valve

BODY MATERIAL:

Carbon Steel, Stainless Steel, Low-Temperature Carbon Steel, Duplex, Super Duplex, Al Bronze, Inconel etc.

SEAT MATERIAL:

Soft Seat: PTFE, Nylon, PEEK, PPL, Delrin, Devlon etc.

Metal Seated: Stellite, Tunsten Carbide, Chrome Carbide

BALL MATERIAL:

ENP, Stellite, Tunsten Carbide, Chrome Carbide

OPERATOR

Manual: Lever, wrench or Gear

Actuated: Pneumatic/ Hydraulic/Electric

HOW A TRUNNION BALL VALVE WORKS

The trunnion ball valve is a form of quarter-turn ball valve which uses a solid, perforated and fixed/supported/trunnion mounted ball to control flow through it. The line pressure drives the upstream seat against the stationary ball so that the line pressure forces the upstream seat onto the ball causing it to seal. The mechanical anchoring of the ball absorbs the thrust from the line pressure, preventing excess friction between the ball and seats, so even at full rated working pressure operating torque remains low. This is particularly advantageous when the ball valve is actuated because it reduces the size of the actuator and hence the overall costs of the valve actuation package.

GENERAL FEATURES:

1. Antic-Static Device: anti-static spring is used as standard between the stem and the ball.

2. Anti blow-out proof stem design.

3. High quality stem gasket for reliable tightness and low emission performance.

4. Use of low seat-ball friction materials and surface finish for reliable sealing and long service life.

5. Low operation torque design.

6. Emergency sealant injection system for ball valve size 6”and larger (or smaller size on request), is equipped with sealant injection located at stem and seats area.

7. Standard double block & bleed seat (DBB)

8. Double isolation & bleed (DIB) under request

9. Fire safe design to API 607/API 6FA

10. PMSS - Primary metal seated, secondary soft seated with differential hardness between the ball and seat to prevent galling of the substrate

Double Block and Bleed Seat (DBB)

API 6D definition: DBB valve is single valve with two seating surfaces that, in the closed position, provides a seal against pressure from both ends of the valve, with a means of venting/bleeding the cavity between the seating surfaces.

Double block and bleed seats (DBB) are generally internal self relieving seat.

Double Block: When the ball is in the closed position, each seat seals off the process medium independently at the same time between the up/down stream.

Bleed: When the ball is in closed position and the pressure rating of the trapped medium gets 1.33 times of the line pressure, the trapped medium gets released between seat automatically.

The trunnion mounted ball valve may trap the media in the body cavity when the operator closes the valve. The trapped fluid expands and the pressure increases in the cavity when heated. If the cavity pressure gets 1.33 times of the line pressure, the trapped fluid will push the seat of the downstream side away from the ball by rising pressure against the spring load. When this happens, the pressure gets released.

double block and bleed seat trunnion ball valve drawing

Double Isolation & Bleed (DIB)

API 6D definition: "DIB valve is a single valve with two seating surfaces, each of which, in the closed position, provides a seal against pressure from a single source, with a means of venting/bleeding the cavity between the seating surfaces. "

DIB ball valves are made of double piston effect seat. Each seat is to be pushed against the ball in both cases, whether pressure comes from body cavity or from upstream/ downstream side.

DIB-1 (DPE*DPE Seats)

DIB-1 ball valves are are combined with two piston seats. If one seat is broken, the other seat can still cut off the flow from both ends. Ball valve with two DPE seats cannot perform cavity relief. For such reason -in liquid services- the use of a relief valve is recommended to relieve the pressure to atmosphere.

DIB seat trunnion ball valve drawing

Double Isolation & Bleed (DIB-1), Both Seats are DPE Seats

DIB-2 (DPE*SPE Seats)

Upstream SPE seat ensures self relieving capability, while downstream DPE seat grants the double barrier in case of upstream seat damage. This configuration involves a preferred direction of installation with SPE seat facing upstream. With SPE-DPE configurations, cavity relief always takes place through SPE seat.

DIB-2 seat trunnion ball valve drawing

DIB-2, One Seat is DPE, the Other Seat is Single Piston Effect

Trunnion Ball Valve Price List - Jan. 2021

Size Class 150 Class 300 Class 600 Class 900 Class1500
2" $233 $268 $385 $537 $607
3" $327 $583 $723 $968 $1115
4" $467 $817 $1050 $1330 $1610
6" $1517 $1657 $2333 $2800 $3500
8" $2450 $2683 $3477 $4153  
10" $4037 $4433 $5600 $6697  
12" $6067 $6720 $8470    
14" $7700 $8937 $11783    
16" $12017 $13230 $16800    

Note: 1. The price is for trunnion mountd ball valve, dbb, side entry, bolted body, design to API 6D, forged steel A105 body, 316 trim, RPTFE seat for Class 150-300, Devlon/Nylon seat for Class 600, PEEK seat for Class 1500.

2. The price list is for reference only, the price is changing due to a lot of factors, such as raw material cost, the accurate price will be based our offical quotation.

Side Entry Trunnion Ball Valve Drawing

side entry trunnion ball valve drawing

Material Specifications

Part No. Part Name A105 Body LF2 Body F316 Body
1

Nut

A194 2H A194 7 A193 B8
2 Bolt A193 B7 A320 L7 A182 F316
3 Bonnet ASTM A105 A350 LF2 A182 F316
4 Gasket SS304+Graphite SS316+Graphite SS316+Graphite
5 O-Ring Viton AED Viton AED Viton AED
6 O-Ring Viton AED Viton AED Viton AED
7 Graphite SS304+Graphite SS316+Graphite SS316+Graphite
8 Spring Inconel X-750 Inconel X-750 Inconel X-750
9 Seat Ring A105+ENP A182 F316 A182 F316
10 Pin Carbon Steel Stainless Steel Stainless Steel
11 Trunnion A105+ENP A182 F316 A182 F316
12 Bearing C.S+Graphite S.S+Graphite S.S+Graphite
13 Gasket SS304+Graphite SS316+Graphite SS316+Graphite
14 Ball A105+ENP A182 F316+ENP A182 F316+ENP
15 Drain Plug A182 F316 A182 F316 A182 F316
16 A105+ENP Stainless Steel Stainless Steel Stainless Steel
17 Seal Ring Viton AED Viton AED Viton AED
18 Seat Ring PEEK/Nylon PEEK/Nylon PEEK/Nylon
19 Feet Carbon Steel Carbon Steel Carbon Steel
20 Injection Plug Stainless Steel Stainless Steel Stainless Steel
21 Lifting Lug Carbon Steel Carbon Steel Carbon Steel
22 Body ASTM A105 A350 LF2 A182 F316
23 Safety Valve Carbon Steel Carbon Steel Carbon Steel
24 Relief Valve Carbon Steel Stainless Steel Stainless Steel
25 Trunnion Bearing C.S+Graphite S.S+Graphite S.S+Graphite
26 Stem A182 F6A A182 F316 A182 F316
27 Key Carbon Steel Carbon Steel Carbon Steel
28 Thrust Washer PTFE PTFE PTFE
29 O-Ring Viton AED Viton AED Viton AED
30 Stuffing Box ASTM A105 A350 LF2 A182 F316
31 Bolt A193 B7 A320 L7 A193 B8
32 Packing SS304+Graphite SS316+Graphite SS316+Graphite
33 Adapter ASTM A105 A350 LF2 A182 F316
34 Bolt A193 B7 A320 L7 A193 B8
35 Nut A194 2H A194 7 A194 8
36 Bolt A193 B7 A320 L7 A193 B8
37 Worm Gear Ductile Iron Ductile Iron Ductile Iron

DIMENSION & WEIGHT

trunnion ball valve dimensions and weight

Note:

1. End to end dimensions is L , bore size is d in above dimension drawing.

2. End to end/face to face dimensions are as per API 6D.

Class 150 Ball Valve Dimension & Weight, Full & Reduced Bore, Long Pattern - API 6D

SIZE BORE SIZE END-TO-END (mm) WEIGHT (KG)
(mm)  RF RTJ BW RF/RTJ BW
 2” DN50 49 178 191 216 18 13
3” DN80 74 203 216 283 31 24
4” DN100 100 229 241 305 54 43
6” DN150 150 394 406 547 226 181
 8” DN200 201 457 470 521 340 294
10” DN250 252 533 546 559 544 476
12” DN300 303 610 622 635 771 703
14” DN350 334 686 699 762 1065 975
16” DN400 385 762 775 838 1383 1247
18” DN450 436 864 876 914 1995 1791
 20” DN500 487 914 927 991 2404 2177
24” DN600 589 1067 1080 1143 3946 3606
26” DN650 633 1143 / 1247 4762 4286
28” DN700 684 1245 / 1346 5443 4898
30” DN800 735 1295 / 1397 6803 6123
36” DN900 874 1524 / 1727 11339 10205

 

Class 300 Ball Valve Dimension & Weight, Full & Reduced Bore, Long Pattern - API 6D

SIZE BORE SIZE END-TO-END (mm) WEIGHT (KG)
(mm)  RF RTJ BW RF/RTJ BW
2" DN50 49 216 232 216 27 20
 3" DN80 74 283 298 283 45 36
4" DN100 100 305 321 305 72 61
6" DN150 150 403 419 457 249 213
8" DN200 201 502 518 521 385 335
10" DN250 252 568 584 559 566 489
12" DN300 303 648 664 635 861 775
14" DN350 334 762 778 762 1179 1043
16" DN400 385 838 854 838 1564 1406
18" DN450 436 914 930 914 2267 2041
20" DN500 487 991 1010 991 2494 2267
24" DN600 589 1143 1165 1143 4195 3832
26" DN650 633 1245 1270 1245 5307 4762
28" DN700 684 1346 1372 1346 6350 5715
30" DN750 735 1397 1422 1397 7711 6939
36" DN900 874 1727 1754 1727 11793 10614

 

Class 600 Ball Valve Dimension & Weight, Full & Reduced Bore, Long Pattern - API 6D

SIZE BORE SIZE END-TO-END (mm) WEIGHT (KG)
(mm)  RF RTJ BW RF/RTJ BW
2" DN50 49 292 295 292 31 24
3" DN80 74 356 359 356 54 43
4" DN100 100 432 435 432 99 81
 6" DN150 150 559 562 559 272 226
 8" DN200 201 660 664 660 544 444
10" DN250 252 787 791 787 771 625
12" DN300 303 838 841 838 997 807
14" DN350 334 889 892 889 1338 1088
16" DN400 385 991 994 991 2063 1700
18" DN450 436 1092 1095 1092 2671 2186
20" DN500 487 1194 1200 1194 3016 2472
24" DN600 589 1397 1407 1397 5238 4649
26" DN650 633 1448 1461 1448 6214 5216
28" DN700 684 1549 1562 1549 10205 9185
30" DN750 735 1651 1664 1651 10886 9797
36" DN900 874 2083 2099 2083 17100 15376

 

Class 900 Ball Valve Dimension & Weight, Full & Reduced Bore, Long Pattern - API 6D

SIZE BORE SIZE END-TO-END (mm) WEIGHT (KG)
(mm)  RF RTJ BW RF/RTJ BW
2" DN50 49 368 371 368 54 43
3" DN80 74 381 384 381 81 65
4" DN100 100 457 460 457 145 102
6" DN150 150 610 613 610 317 254
8" DN200 201 737 740 737 703 562
10" DN250 252 838 841 838 839 671
12" DN300 303 965 968 965 1315 1065
14" DN350 322 1029 1038 1029 1746 1406
16" DN400 373 1130 1140 1130 2154 1723
18" DN450 423 1219 1232 1219 3197 2562
20" DN500 471 1321 1334 1321 4558 3651
24" DN600 570 1549 1568 1549 6078 4876
30" DN750 712 1880 1902 1880 12440 11072
36" DN900 855 2286 2315 2286 20150 18337

 

Class 1500 Ball Valve Dimension & Weight, Full & Reduced Bore, Long Pattern - API 6D

SIZE BORE SIZE END-TO-END (mm) WEIGHT (KG)
(mm)  RF RTJ BW RF/RTJ BW
1" DN25 25 / 254 / 26 /
1.5" DN40 38 / 305 / 40 /
2" DN50 49 368 371 368 54 43
3" DN80 74 470 473 470 109 84
4" DN100 100 546 549 546 191 127
6" DN150 144 705 711 705 541 409
8" DN200 192 832 841 832 880 616
10" DN250 239 991 1000 991 1555 1088
12" DN300 287 1130 1146 1130 2327 682
14" DN350 315 1257 1276 1257 2845 1959
16" DN400 360 1384 1407 1384 4186 3485
18" DN450 406 1537 1559 1537 6482 5191
20" DN500 454 1664 1686 1664 9341 7940
24" DN600 546 1943 1972 1943 12540 10660

 

Class 2500 Ball Valve Dimension & Weight, Full & Reduced Bore, Long Pattern - API 6D

SIZE BORE SIZE END-TO-END (mm) WEIGHT (KG)
(mm)  RF RTJ BW RF/RTJ BW
1" DN25 25 / 356 / 36 /
1.5" DN40 38 / 387 / 48 /
2" DN50 42 451 454 451 115 98
3" DN80 62 578 584 578 200 170
4" DN100 87 673 683 673 370 314
6" DN150 131 914 927 914 800 680
8" DN200 179 1022 1038 1022 1600 1360
10" DN250 223 1270 1292 1270 2500 2940
12" DN300 265 1422 1445 1422 4000 3400

Online Inquiry

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Email
info@reliavalve.com
Phone
0086-577-86373155
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