Trunnion Ball Valve
The trunnion ball valves are double bock and bleed designed. Relia is a trunnion ball valve manufacturer and supplier in China with API 6D, CE, and API 607 certificates. The oil, gas, petrochemical, and water treatment industries can all use our trunnion ball valves.
Trunnion ball valves are fire safe, anti-static devices, anti-blow out stems, and have superior sealing performance at both high and low pressure. 2 Piece and 3 piece Trunnion Mounted Ball valves are available.
Trunnion ball valves are made of
Cast steel: WCB, LCB, CF8, CF3, 4A etc. or
forged steel: A105, LF2, F304, F316, F51 etc.
End Connections: Flanged, Welded, Hub End, etc.
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 |
Main Material:
Body: Carbon Steel, Stainless Steel, Low-Temperature Carbon Steel, Duplex, Super Duplex, Al Bronze, Inconel etc.
Soft Seat: PTFE, Nylon, PEEK, PPL, Delrin, Devlon etc.
Metal Seat: Stellite, Tunsten Carbide, Chrome Carbide
Operator:
Manual: Lever, wrench or Gear Operated;
Actuated: Pneumatic/ Hydraulic/Electric
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 unit price, with terms of FOB China port. Trunnion mounted ball valve, DBB, side entry, bolted body, designed to API 6D, forged steel A105 body, 316 trim, RPTFE seat for Class 150-300, Devlon/Nylon seat for Class 600, and PEEK seat for Class 1500.
2. The price list is only for reference purposes; prices fluctuate due to a variety of factors, including raw material costs; the accurate price will be based on our official quotation.
3. The ball valve is made in our China trunnion ball valve factory.
General Features:
1. Anti-Static Device: As a standard between the stem and the ball, an anti-static spring is used.
2. The stem is anti-blow-out proof.
3. A good stem gasket guarantees consistent tightness and low emission performance.
4. For long service life and reliable sealing, use low seat-ball friction materials and surface finishes.
5. Create a design with a low operating torque.
6. An emergency sealant injection system for ball valve sizes 6"and larger (or smaller size on request), is equipped with a sealant injection located at the stem and seat area.
7. DBB (dual block and bleed seat)
8. On request, double isolation and bleed (DIB).
9. API 607/API 6FA fire safe design
10. PMSS-Primary metal seated, secondary soft seated with differential hardness between the ball and seat to prevent galling of the substrate.
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
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, 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, 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, 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, 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, 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, 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 |
How A Trunnion Ball Valve Works
The trunnion ball valve is a form of quarter-turn ball valve which uses a solid, perforated, and 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 cost of the valve actuation package.
Related Information
Valve body material selection guide
Ball valve seat material selection guide
