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Top Entry Trunnion Ball Valve

Top entry trunnion ball valves are trunnion valves that the ball is assembled from the top side.

The top entry design enables maintenance while keeping the valve in service; the valve internal parts can be inspected and repaired without removing the valve from the pipeline.

The top entrytrunnion mounted ball valves are used in applications that require minimal disassembly for in-line maintenance, such as high-pressure applications that require infrequent maintenance or butt welding ends.

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top-entry trunnion mounted ball valve
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Design Features

top entry trunnion ball valve design feature

①　Two O-ring seals prevent leakage from the stem area.
②　Blow-out-proof stems provide a safety feature that functions to assure stem sealing at all pressures.
③　Back-up metal-to-metal sealing provides a secondary metal-to-metal seal. If primary soft-seat materials are burned, the metal-to-metal seal provides shutoff.
④　One-piece body construction provides the same rigidity as the pipe.
⑤　O-ring and gasket combinations prevent leakage risk from the body connection area.
⑥　Floating spring-loaded seats ensure sealing even at low pressures.
⑦　Emergency sealant injection fitting allows external intervention to prevent seat leakage.


Explosive Drawing
 

top entry trunnion ball valve drawing
 

Material Specifications

No. Part Standard Stainless Steel Sour Service Low Temperature
Service
1 Body ASTM A216-WCB ASTM A351-CF8M ASTM A216-WCB ASTM A352-LCB
2 Bonnet ASTM A105N ASTM A182 F316 ASTM A105N ASTM A350-LF2
3 Ball ASTM A105N/ENP ASTM A182 F316 ASTM A105N/ENP ASTM A350-LF2/ENP
4 Supporting Ring Stainless Steel Stainless Steel Stainless Steel Stainless Steel
5 Seat Insert RPTFE/NYLON/PEEK RPTFE/NYLON/PEEK RPTFE/NYLON/PEEK RPTFE/NYLON/PEEK
6 Seat Ring ASTM A105N/ENP ASTM A182 F316 ASTM A105N/ENP ASTM A350-LF2/ENP
7 Spring Support ASTM A105N/ENP ASTM A182 F316 ASTM A105N/ENP ASTM A350-LF2/ENP
8 Stem ASTM A105N/ENP ASTM A182 F316 ASTM A105N/ENP ASTM A350-LF2/ENP
9 Gasket 316SS+Graphite 316SS+Graphite 316SS+Graphite 316SS+Graphite
10 Fire safe seal 316SS+Graphite 316SS+Graphite 316SS+Graphite 316SS+Graphite
11 Injection Stainless Steel Stainless Steel Stainless Steel Stainless Steel
12 Injection Stainless Steel Stainless Steel Stainless Steel Stainless Steel
13 Key Carbon Steel Stainless Steel Carbon Steel Stainless Steel
14 Yoke Carbon Steel Carbon Steel Carbon Steel Carbon Steel
15 Thrust Washer PTFE PTFE PTFE PTFE
16 Thrust Washer PTFE PTFE PTFE PTFE
17 Bearing 316SS+PTFE 316SS+PTFE 316SS+PTFE 316SS+PTFE
18 Bearing 316SS+PTFE 316SS+PTFE 316SS+PTFE 316SS+PTFE
19 Vent Valve Stainless Steel Stainless Steel Stainless Steel Stainless Steel
20 Drain Stainless Steel Stainless Steel Stainless Steel Stainless Steel
21 Gland Flange ASTM A105N Stainless Steel ASTM A105N ASTM A350-LF2
22 Gland Stainless Steel Stainless Steel Stainless Steel Stainless Steel
23 Packing 316SS+Graphite 316SS+Graphite 316SS+Graphite 316SS+Graphite
24 Trunnion ASTM A105N/ENP ASTM A182 F316 ASTM A105N/ENP ASTM A350-LF2/ENP
25 Spring Inconel X-750 Inconel X-750 Inconel X-750 Inconel X-750
26 Anti-Static Device Stainless Steel Stainless Steel Stainless Steel Stainless Steel
27 O-Ring HNBR/VITON HNBR/VITON HNBR/VITON HNBR/VITON
28 O-Ring HNBR/VITON HNBR/VITON HNBR/VITON HNBR/VITON
29 O-Ring HNBR/VITON HNBR/VITON HNBR/VITON HNBR/VITON
30 O-Ring HNBR/VITON HNBR/VITON HNBR/VITON HNBR/VITON
31 Stud ASTM A193-B7 ASTM A193-B8 ASTM A193-B7M ASTM A320-L7M
32 Nut ASTM A194-2H ASTM A194-8 ASTM A194-2HM ASTM A194-7M
33 Body Stud ASTM A193-B7 ASTM A193-B8 ASTM A193-B7M ASTM A320-L7M
34 Body Nut ASTM A194-2H ASTM A194-8 ASTM A194-2HM ASTM A194-7M
35 Screw Carbon Steel Stainless Steel Carbon Steel ASTM A320-L7M


Dimensions and Weight

Class 600 top entry trunnion ball valve dimension

Class 600 Full Port

Size D L H1 H2 W Weight
inch mm inch mm inch mm inch mm inch mm inch mm lb Kg
1-1/2 40 1.50 38 9.49 241 8.23 209 2.76 70 15.75 400 66.1 30
2 50 2.01 51 11.50 292 7.68 195 4.33 110 15.75 400 83.8 38
3 80 2.99 76 14.02 356 9.45 240 4.33 110 29.53 750 176.4 80
4 100 4.02 102 17.01 432 11.02 280 6.89 175 39.37 1000 330.7 150
6 150 5.98 152 22.01 559 12.01 305 7.68 195 11.81 *300 652.6 296
8 200 7.99 203 25.98 660 15.75 400 11.02 280 11.81 *300 965.6 438
10 250 10.00 254 30.98 787 17.13 435 11.22 285 19.69 *500 1325.0 601
12 300 12.01 305 32.99 838 17.32 440 12.60 320 23.62 *600 1377.9 625
14 350 13.27 337 35.00 889 19.88 505 13.39 340 23.62 *600 2711.6 1230
16 400 15.24 387 39.02 991 23.23 590 16.14 410 23.62 *600 3384.0 1535
18 450 17.24 438 42.99 1092 27.56 700 17.52 445 23.62 *600 4706.8 2135
20 500 19.25 489 47.01 1194 30.51 775 20.08 510 23.62 *600 5820.1 2640
24 600 23.27 591 55.00 1397 33.07 840 25.20 640 23.62 *600 8730.2 3960


Class 600 Reduced Port

Size d D L H1 H2 W Weight
inch mm inch mm inch mm inch mm inch mm inch mm inch mm lb Kg
2*1-1/2 50*40 1.50 38 2.01 51 11.50 292 8.23 209 2.76 70 15.75 400 88.2 40
3*2 80*50 2.01 51 2.99 76 14.02 356 7.68 195 4.33 110 15.75 400 119.0 54
4*3 100*80 2.99 76 4.02 102 17.01 432 9.45 240 4.33 110 29.53 750 218.3 99
6*4 150*100 4.02 102 5.98 152 22.01 559 11.02 280 6.89 175 39.37 1000 467.4 212
8*6 200*150 5.98 152 7.99 203 25.98 660 12.01 305 7.68 195 11.81 *300 670.2 304
10*8 250*200 7.99 203 10.00 254 30.98 787 15.75 400 11.02 280 11.81 *300 1124.3 510
12*10 300*250 10.00 254 12.01 305 32.99 838 17.13 435 11.22 285 19.69 *500 1988.5 902
14*12 350*300 12.01 305 13.27 337 35.00 889 17.32 440 12.60 320 23.62 *600 2403.0 1090
16*14 400*350 13.27 337 15.24 387 39.02 991 19.88 505 13.39 340 23.62 *600 2888.0 1310
18*16 450*400 15.24 387 17.24 438 42.99 1092 23.23 590 16.14 410 23.62 *600 3615.5 1640
20*18 500*450 17.24 438 19.25 489 47.01 1194 27.56 700 17.52 445 23.62 *600 5357.1 2430
24*20 600*500 19.25 489 23.27 591 55.00 1397 30.51 775 20.08 510 23.62 *600 7583.8 3440

 

Class 900 top entry trunnion ball valve dimension


Class 900 Full Port

Size D L H1 H2 W Weight
inch mm inch mm inch mm inch mm inch mm inch mm lb Kg
1-1/2 40 1.50 38 12.01 305 8.46 215 3.15 80 15.75 400 88.2 40
2 50 2.01 51 14.49 368 7.87 200 4.72 120 29.53 750 114.6 52
3 80 2.99 76 15.00 381 9.45 240 5.12 130 39.37 1000 191.8 87
4 100 4.02 102 17.99 457 11.02 280 6.89 175 59.06 1500 352.7 160
6 150 5.98 152 24.02 610 13.78 350 8.66 220 11.81 *300 848.8 385
8 200 7.99 203 29.02 737 15.35 390 10.24 260 15.75 *400 1234.6 560
10 250 10.00 254 32.99 838 18.90 480 12.20 310 23.62 *600 1807.8 820
12 300 12.01 305 37.99 965 21.18 538 16.14 410 23.62 *600 2480.2 1125

Class 900 Reduced Port

Size d D L H1 H2 W Weight
inch mm inch mm inch mm inch mm inch mm inch mm inch mm lb Kg
2*1-1/2 50*40 1.50 38 2.01 51 14.49 368 8.46 215 3.15 80 15.75 400 97.0 44
3*1-1/2 80*40 2.01 51 2.99 76 15.00 381 7.87 200 4.72 120 29.53 750 123.5 56
4*3 100*80 2.99 76 4.02 102 17.99 457 9.45 240 9.45 240 39.37 1000 207.2 94
6*4 150*100 4.02 102 5.98 152 24.02 610 11.02 280 11.02 280 59.06 1500 498.2 226
8*6 200*150 5.98 152 7.99 203 29.02 737 13.78 350 13.78 350 11.81 *300 1058.2 480
10*8 250*200 7.99 203 10.00 254 32.99 838 15.35 390 15.35 390 15.75 *400 1433.0 650
12*10 300*250 10.00 254 12.01 305 37.99 965 18.90 480 18.90 480 23.62 *600 1913.6 868

 

Class 1500 top entry trunnion ball valve dimension


Class 1500 Full Port

Size D L H1 H2 W Weight
inch mm inch mm inch mm inch mm inch mm inch mm lb Kg
1-1/2 40 1.50 38 12.01 305 8.66 220 3.54 90 15.75 400 88.2 40
2 50 2.01 51 14.49 368 8.07 205 4.72 120 29.53 750 132.3 60
3 80 2.99 76 18.50 470 8.27 210 4.92 125 39.37 1000 253.5 115
4 100 4.02 102 21.50 546 9.65 245 6.30 160 11.81 *300 427.7 194
6 150 5.75 146 27.76 705 13.19 335 10.04 255 15.75 *400 1278.7 580
8 200 7.64 194 32.76 832 16.81 427 13.39 340 19.69 *500 1657.8 752
10 250 9.49 241 39.02 991 19.76 502 15.00 381 23.62 *600 2634.5 1195
12 300 11.38 289 44.49 1130 20.98 533 17.24 438 23.62 *600 4784.0 2170

Class 1500 Reduced Port

Size d D L H1 H2 W Weight
inch mm inch mm inch mm inch mm inch mm inch mm inch mm lb Kg
2*1-1/2 50*40 1.50 38 2.01 51 14.49 368 8.66 220 3.54 90 15.75 400 97.0 44
3*1-1/2 80*40 2.01 51 2.99 76 18.50 470 8.07 205 4.72 120 29.53 750 180.8 82
4*3 100*80 2.99 76 4.02 102 21.50 546 8.27 210 4.92 125 39.37 1000 330.7 150
6*4 150*100 4.02 102 5.75 146 27.76 705 9.65 245 6.30 160 11.81 *300 650.4 295
8*6 200*150 5.75 146 7.64 194 32.76 832 13.19 335 10.04 255 15.75 *400 1521.2 690
10*8 250*200 7.64 194 9.49 241 39.02 991 16.81 427 13.39 340 19.69 *500 2050.3 930
12*10 300*250 9.49 241 11.38 289 44.49 1130 19.76 502 15.00 381 23.62 *600 2954.1 1340

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Valve type (ball, gate, globe, check etc.), valve size, pressure class, valve material, and end connection (flanged, butt welding etc.)

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