The RT series bi-eccentric butterfly valve was developed for high performance, in accordance with API 609 Category B, aiming to fill a gap in the market to meet the demands of the most severe applications.
Monobloc
Headquarters with stainless steel ring
Interchangeability of Soft Headquarters to Metal Headquarters
Diversity of materials
Body
Built in a single part in WAFER, LUG and flanged settings are designed to ensure maximum safety and reliability. It has an extended neck that facilitates access to the rod sealing system through an accommodation for the premium gasket. The top flange allows direct coupling of actuators without the need for supports - eliminating the possibility of freight between these components.
Disco
Astm A-351 GR. CF8M Bi-Excentric Stainless Steel Steel Disc, reducing friction with headquarters and increasing its service life, as well as allowing a small opening angles for low load loss and torque reduction.
Sealing
Fixed to the body by device that does not require the use of counterflanges or any other part outside the valve, to ensure its sealing even when installed end of the line.
Superior axis sealing
Adjustable PTFE gaskets with a squeeze system that dispenses with the removal of the actuator for adjustments.
Lower axis sealing
Lower shaft sealing made through the O'Rings camera located on the stems and bearings.
Fixing the axes on the disc
Fixing the disc on the disc made through conical stainless steel pins ASTM A564 Condition H1075 (17-4ph) with 1:50 connection with bolts and pressure washers at one end to ensure perfect fixation.
Beam
Built in material composed of autolubrifier polymer.
SETTINGS
Construction Standard
API 609 Category B
Body construction
Wafer
Lug
Flangeada
Long or short body
Face a face
API 609 Category B
Dimensions
26″ a 54″
Pressure Limits
150# a 300#
100 psi
Site
PTFE
Inter-hard
Inter-Steam
AISI 316
Station
Incondo and
Material
| Body | Disco | Site | Haste |
|---|---|---|---|
| ASTM A-351 CF8M Stainless Steel | Astm A-351 CF8 Stainless Steel | PTFE | ASTM A-246 Tp.410 |
| Astm A-351 CF8 Stainless Steel | ASTM A-351 CF8M Stainless Steel | RTFE | ASTM-564 Tp.630 17-4PH |
| Carbon Steel ASTM ASTM WCB | FoFo Nodular 65-45-12 (Rev. hard chrome on edge) | Inter-steam | |
| FoFo Nodular 65-45-12 | Station |
Dimensional table
Values in millimeters
| DN | 26″ | 28″ | 30″ | 32″ | 36″ | 40″ | 42″ | 48″ | 54″ | |
|---|---|---|---|---|---|---|---|---|---|---|
| A | 167 | 167 | 167 | 190 | 200 | 218 | 251 | 281 | 294 | |
| B | 554 | 578 | 603 | 328 | 379 | 736 | 771 | 888 | 1012 | |
| C | 1066 | 1143 | 1181 | 1232 | 1341 | 1452 | 1516 | 1736 | 2004 | |
| D | 765 | 829 | 880 | 937 | 1045 | 1159 | 1216 | 1380 | 1514 | |
| F | 55 | 55 | 55 | 55 | 140 | 140 | 140 | 152 | 152 | |
| G | 3.5/8″ | 4″ | 4.1/4″ | 4.1/4″ | 4.1/4″ | |||||
| H | 45 | 45 | 45 | 55 | ||||||
| J | 4 | 4 | 4 | 4 | 8 | 8 | 8 | 8 | 8 | |
| N | 22 | 22 | 22 | 18 | 18 | 18 | 22 | 22 | 22 | |
| O | 165 | 165 | 165 | 254 | 254 | 254 | 298 | 298 | 298 | |
| ISO | F16 | F16 | F16 | F25 | F25 | F25 | F30 | F30 | F30 |
Exploded view
| Item | Description |
|---|---|
| 1 | Corpo (Wafer/Lug/Flangeado) |
| 4 | Disco |
| 5 | Site |
| 6 | Haste superior |
| 7 | Haste lower |
| 8 | Beam |
| 9 | Plug de torque |
| 12 | Gaskets |
| 19 | Seat Ring |
| 28 | Cover gasket |
| 32 | Kit tampa |
| 33 | Kit preme |
| 34 | Retaining ring kit |
Peso
Orientative (approximate) values in kilograms (kg.)
| Type | 26″ | 28″ | 30″ | 32″ | 36″ | 40″ | 42″ | 48″ | 54″ |
|---|---|---|---|---|---|---|---|---|---|
| Wafer | 250 | 276 | 345 | 355 | 573 | 732 | 828 | 1176 | 1395 |
TRIMs
| TRIM | Body | Disco | Site | Haste | Gaskets |
|---|---|---|---|---|---|
| 614 | Carbon steel | Stainless steel cf8m | PTFE | 17-4ph stainless steel | PTFE |
| 616 | Carbon steel | Stainless steel cf8m | Inter-hard | 17-4ph stainless steel | PTFE |
| 617 | Carbon steel | Stainless steel cf8m | Station | 17-4ph stainless steel | PTFE |
| 618 | Carbon steel | Stainless steel cf8m | Inter-steam | 17-4ph stainless steel | PTFE |
| 634 | Stainless steel cf8m | Stainless steel cf8m | PTFE | 17-4ph stainless steel | PTFE |
| 636 | Stainless steel cf8m | Stainless steel cf8m | Inter-hard | 17-4ph stainless steel | PTFE |
| 637 | Stainless steel cf8m | Stainless steel cf8m | Station | 17-4ph stainless steel | PTFE |
| 638 | Stainless steel cf8m | Stainless steel cf8m | Inter-steam | 17-4ph stainless steel | PTFE |
| 705 | Bronze/AL B148 | Bronze/AL B148 | RPTFE | Monel K500 | PTFE |
| TRIM | Body | Disco | Site | Haste | Gaskets |
|---|---|---|---|---|---|
| 814 | Carbon steel | CF8M Stainless Steel Chrome | Stainless steel 316 chrome | 17-4ph stainless steel | Grafite/PTFE |
| 816 | Carbon steel | CF8M Stainless Steel Chrome | Incoloy | 17-4ph stainless steel | Grafite/PTFE |
| 834 | Stainless steel cf8m | CF8M Stainless Steel Chrome | Stainless steel 316 chrome | 17-4ph stainless steel | Grafite/PTFE |
| 836 | Stainless steel cf8m | CF8M Stainless Steel Chrome | Incoloy | 17-4ph stainless steel | PTFE |
| 500 | Bronze/AL B148 | Bronze/AL B148 | Bronze | Monel K500 | Grafite/PTFE |
Prohibition
Leakage control by valve headquarters, tolerance and specifications (ANSI/FCI 70.2)
| Sealing class | Maximum leakage | Testing | Pressure and Temperature |
|---|---|---|---|
| Class IV | 0.01% of the total valve capacity | Air or water | P. of service or 50 psid. (3.4 Differential Bar) |
| Class V | 5 x 10-4 ml/min/psig/in. of diameter (5 x 10-12 m³/sec/bar differential/mm. diameter) | Water | P. of service or 50 to 125º F (10th to 52º C) |
| Sealing class | Nominal diameter | Bubbles per minute | Ml. per minute | Testing | Pressure and Temperature |
|---|---|---|---|---|---|
| Class there | 2″ | 3 | 0.45 | Air or nitrogen | P. of service or 50 psig (3.4 differential bar) |
| Class there | 2.5″ | 4 | 0.60 | Air or nitrogen | P. of service or 50 psig (3.4 differential bar) |
| Class there | 3″ | 6 | 0.90 | Air or nitrogen | P. of service or 50 psig (3.4 differential bar) |
| Class there | 4″ | 11 | 1.70 | Air or nitrogen | P. of service or 50 psig (3.4 differential bar) |
| Class there | 6″ | 27 | 4.00 | Air or nitrogen | P. of service or 50 psig (3.4 differential bar) |
| Class there | 8″ | 45 | 6.75 | Air or nitrogen | P. of service or 50 psig (3.4 differential bar) |
Flow
Orientative values for specific water weight (1.0 to 20 ° C)
| Opening angle | 26″ | 28″ | 30″ | 32″ | 36″ | 40″ | 42″ | 48″ | 54 |
|---|---|---|---|---|---|---|---|---|---|
| 25º | 1902 | 2156 | 2819 | 2938 | 4356 | 4948 | 5112 | 6825 | 8327 |
| 30º | 2661 | 3014 | 3986 | 4154 | 5936 | 6925 | 7326 | 9612 | 11727 |
| 40º | 4729 | 5358 | 7080 | 7378 | 9790 | 11862 | 12793 | 16785 | 20478 |
| 50º | 7760 | 8790 | 11328 | 11805 | 15572 | 19304 | 20830 | 27331 | 33344 |
| 60º | 12305 | 13939 | 18090 | 18851 | 25053 | 30636 | 32803 | 43039 | 52508 |
| 70º | 20325 | 23023 | 28844 | 30058 | 40086 | 50406 | 54680 | 70485 | 85992 |
| 75º | 30302 | 34325 | 35924 | 37436 | 49877 | 62198 | 69627 | 89635 | 109355 |
| 80º | 34205 | 38674 | 43003 | 44813 | 59667 | 73990 | 84574 | 108786 | 132719 |
| 90º | 36955 | 41860 | 52443 | 54650 | 77089 | 91400 | 102861 | 132794 | 162000 |
