API6d Manual Three Pieces Trunnion Mounted Ball Valve
Product Description
Material: Stainless Steel Driving Mode: Turbine Channel: Straight Through Type Type: Fixed Ball Valve Temperature: Normal Temperature Size: 2′′-40′′ Ends Con: RF,Rtj,Sw,Bw Trademark: FYV Origin: Wenzhou, Zhejiang Connection Form: Flange Nominal Pressure: ANSI CLASS 150-900 Structure: Fixed Ball Valve Function: Blow-Down Valve Application: Industrial Usage, Water Industrial Usage, Household Usage Class: 150lb-1500lb O-Ring Sealing: PTFE,NBR,Rptfe Specification: CE, SGS HS Code: 8481804090 Double Piston Effect Ball Valve
Trunnion Mounted Ball valves are straight-through flow valves which provide positive shutoff with minimal pressure drop and flow turbulence. The barrier to flow is a ball which is rotated 90 degrees to the direction of flow.
In Trunnion Mounted valves, the ball is held in a fixed axial position by upper and lower stems (trunnions) and can move only in a rotational mode. The resilient seats are contained in metal carriers which are spring loaded against the ball. Hoeever metal seats normally tungsten carbide coated can also be used. Line pressure applied to a close valve increases the spring load on the upstream seat to effect a tight seal. The primary seating is therefore on the upstream seat permitting trunnion mounted ball valves to be used for
"block and bleed" service.
A variation of this is the Double Piston valve in which the upstream seat works as a standard trunnion mounted seat, but the downstream seat can also be pulled on with pressure by pressure in the body cavity, this is often used in top entry welded in line ball valves were a test can be applied into the body after an over haul without pressure testing the entire pipeline.
Because the stem motion from full open to full closed is a 90 degree rotation, ball valves are ideally suited for automatic operation.
Contact us if you need more details on Trunnion Mounted Ball Valve. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Ball Valve、Steel Ball Valve. If these products fail to match your need, please contact us and we would like to provide relevant information.
Trunnion Mounted Ball valves are straight-through flow valves which provide positive shutoff with minimal pressure drop and flow turbulence. The barrier to flow is a ball which is rotated 90 degrees to the direction of flow.
In Trunnion Mounted valves, the ball is held in a fixed axial position by upper and lower stems (trunnions) and can move only in a rotational mode. The resilient seats are contained in metal carriers which are spring loaded against the ball. Hoeever metal seats normally tungsten carbide coated can also be used. Line pressure applied to a close valve increases the spring load on the upstream seat to effect a tight seal. The primary seating is therefore on the upstream seat permitting trunnion mounted ball valves to be used for
"block and bleed" service.
A variation of this is the Double Piston valve in which the upstream seat works as a standard trunnion mounted seat, but the downstream seat can also be pulled on with pressure by pressure in the body cavity, this is often used in top entry welded in line ball valves were a test can be applied into the body after an over haul without pressure testing the entire pipeline.
Because the stem motion from full open to full closed is a 90 degree rotation, ball valves are ideally suited for automatic operation.
| Type | (Lb) | /ºC |
| Z41Y-150(Lb)~600(Lb) | 150~600 | ≤425 |
| Z41Y-150(Lb)P~600(Lb)P | 150~600 | ≤150 |
| Type | Material | |||
| Body and Bonnet | Disc | Stem | Filling,Gasket | |
| Z41Y-150(Lb)~600(Lb) | WCB | 2Cr13 | WCB | Viton,PTFE,RPTFE,NBR |
| Z41Y-150(Lb)P~600(Lb)P | ZG1Cr18Ni9Ti | 1Cr18Ni9Ti | ZG1Cr18Ni9Ti | |
| DN/in | L | H | D | D1 | D2 | b | z×Φd | D0 |
| 2 | 178 | 409 | 152 | 120.5 | 92 | 19.1 | 4×Φ19 | 200 |
| 3 | 203 | 470 | 190 | 152.5 | 127 | 23.9 | 4×Φ19 | 250 |
| 4 | 229 | 590 | 229 | 190.5 | 157 | 23.9 | 8×Φ22 | 300 |
| 6 | 267 | 630 | 279 | 241.5 | 216 | 25.4 | 8×Φ22 | 300 |
| 8 | 292 | 960 | 343 | 298.5 | 270 | 28.5 | 8×Φ22 | 350 |
| 10 | 330 | 1158 | 406 | 362 | 324 | 30.2 | 12×Φ25 | 400 |
| 12 | 356 | 1378 | 483 | 432 | 381 | 31.8 | 12×Φ25 | 450 |
| 14 | 381 | 1543 | 533 | 176.5 | 413 | 35 | 12×Φ29 | 500 |
| 16 | 406 | 1738 | 597 | 539.5 | 470 | 36.6 | 16×Φ29 | 600 |
| 18 | 432 | 1959 | 635 | 578 | 533 | 39.7 | 16×Φ32 | 600 |
| 20 | 457 | 2214 | 698 | 635 | 584 | 42.9 | 20×Φ32 | 680 |
| 24 | 508 | 2599 | 813 | 749.5 | 692 | 47.7 | 20×Φ35 | 760 |
| 30 | 610 | 3183 | 985 | 914 | 857 | 74.5 | 28×Φ35 | 915 |
| 36 | 711 | 3737 | 1170 | 1086 | 1022 | 90.5 | 32×Φ41 | 915 |
Contact us if you need more details on Trunnion Mounted Ball Valve. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Ball Valve、Steel Ball Valve. If these products fail to match your need, please contact us and we would like to provide relevant information. Product Categories : Trunnion Ball Valve
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