Designed and manufactured in accordance with API American Petroleum Institute standards.
Basic structure form (butterfly plate axis and valve body/seat centerline coincidence)
a.DB71F46 fully lined type
The valve body is fully lined/the butterfly plate is fully lined/the butterfly plate and the butterfly plate shaft are integrated;
b.DB71F4 fully lined type
The valve body is fully lined/ butterfly plate is fully lined/ butterfly plate and disk shaft are combined and assembled;
c.DB71F/P half-lined type valve body fully lined / butterfly plate for stainless steel (not lined) butterfly plate and butterfly plate shaft assembly.
Design and Manufacturing | GB/T12238/API609(median line) |
Structure length | GB/T12221/API609(A |
Flange Size | HG/T20592/ASMEB 16.5 (NPS≤24 |
pressure test | GB/T13927/API598 |
symbolize | GB/T12220/MSS SP-25 |
fill | JB/T7928/API609 |
Nominal Pressure (lbs) ANSI150Lb
Nominal Diameter (inch) NPS 2~24
handlebar rotation | DB71F/P DB71PFA D871F4 Da71F46 | Half-lined Fully lined Fully lined Fully lined | worm-gear rotation | DB371F/P DB371PFA DB371F4 Da371F46 | half-lining Lined Fully lined Fully lined |
get angry | DB671F/P DB671PFA Dg671F4 Dg671F46 | Half-lined Fully lined Fully lined Fully lined | Electricity | De971F/P DB971PFA De971F De971F46 | Half-lined Fully lined Fully lined Fully lined |
serial number | Part Name | gray cast iron | carbon steel | stainless steels | Ultra-low carbon stainless steel | ||
Z | C | P | R | PL | RL | ||
1 | Upper and lower valve body | A126 C.135A | A216 WCB | A351 CF8 | A351 CF8M | A351 CF3 | A351 CF3M |
2 | butterfly plate | A216 WCB | A105 | A351 CF8 | A351 CF8M | A351 CF3 | A351 CF3M |
3 | Butterfly plate shaft | A182 F6 | A182 F6 | A182 F304 | A182 F316 | A182 F304L | A182 F316L |
4 | Lining/seat | PTEE(F4)PCTFE(F3)FEP(F46)PFA(Soluble polytetrafluoroethylene)PO(polyolefin) | |||||
5 | O-ring | FPM(fluoroelastomer) | FPM(Fluoroelastomer) | ||||
6 | pad | SiR(silicone rubber) | SiR(silicone rubber) | ||||
7 | Adjustable Positioning Seat | A182 F304 | A182 F304 | A182 F304 | A182 F304 | A182 F304L | A182 F316L |
8 | bolt (male component of nut and bolt) | A193 B7 | A193 B7 | A193 B8M | A193 B8M | A193 B8M | A193 B8M |
9 | nut (female component of nut and bolt) | A1942H | A1942H | A1948 | A1948 | A1948 | A1948 |
10 | video game controller | ZL101(Casting Aluminum Alloy) | |||||
Nominal diameter | standard value | reference point | |||||||||
DN (mm) | NPS (inch) | L | D | D1 | D2 | f | b | Z-Φd | Do | H | W(kg |
Class 150Lb | |||||||||||
50 | 2 | 43 | - | 120.7 | 92.1 | 3.5 | - | 4-Φ19 | 200 | 150 | 5 |
65 | 21/2 | 46 | - | 139.7 | 104.8 | 3.5 | - | 4-Φ19 | 250 | 160 | 7 |
80 | 3 | 46 | - | 152.4 | 127 | 3.5 | - | 4-Φ19 | 2580 | 170 | 10 |
100 | 4 | 52 | - | 190.5 | 157.2 | 3.5 | - | 8-Φ19 | 300 | 185 | 14 |
125 | 5 | 56 | - | 215.9 | 185.7 | 3.5 | - | 8-Φ22 | 300 | 210 | 22 |
150 | 6 | 56 | - | 241.3 | 215.9 | 4 | - | 8-Φ22 | 200* | 230 | 32 |
200 | 8 | 60 | - | 298.5 | 269.9 | 4 | - | 8-Φ22 | 240* | 285 | 66 |
250 | 10 | 68 | - | 362 | 323.8 | 4 | - | 12-Φ25 | 240* | 325 | 80 |
300 | 12 | 78 | - | 431.8 | 381 | 4.5 | - | 12-Φ25 | 280* | 360 | 94 |
350 | 14 | 78 | - | 476.3 | 412.8 | 4.5 | - | 12-Φ28.6 | 280* | 430 | 125 |
400 | 16 | 102 | - | 539.8 | 469.9 | 5 | - | 16-Φ28.6 | 320* | 475 | 150 |
450 | 18 | 114 | - | 577.9 | 533 | 5 | - | 16-Φ31.8 | 320* | 525 | 172 |
500 | 20 | 127 | - | 635 | 584 | 6 | - | 20-Φ31.8 | 360* | 565 | 225 |
600 | 24 | 154 | - | 749.3 | 692 | 6 | - | 20-Φ34.9 | 360* | 630 | 290 |
The flange size in the table is according to ASME B16.5 when NPS≤24, and according to ASME B16.47 when NPS>24.
Flange size D, D1, D2, Z-φd, f, d, the value is the standard flange size connected with the butterfly valve, the size code in the sketch is only part of it.
Designed and manufactured in accordance with API American Petroleum Institute standards.
Basic structure form (butterfly plate axis and valve body/seat centerline coincidence)
a.DB71F46 fully lined type
The valve body is fully lined/the butterfly plate is fully lined/the butterfly plate and the butterfly plate shaft are integrated;
b.DB71F4 fully lined type
The valve body is fully lined/ butterfly plate is fully lined/ butterfly plate and disk shaft are combined and assembled;
c.DB71F/P half-lined type valve body fully lined / butterfly plate for stainless steel (not lined) butterfly plate and butterfly plate shaft assembly.
Design and Manufacturing | GB/T12238/API609(median line) |
Structure length | GB/T12221/API609(A |
Flange Size | HG/T20592/ASMEB 16.5 (NPS≤24 |
pressure test | GB/T13927/API598 |
symbolize | GB/T12220/MSS SP-25 |
fill | JB/T7928/API609 |
Nominal Pressure (lbs) ANSI150Lb
Nominal Diameter (inch) NPS 2~24
handlebar rotation | DB71F/P DB71PFA D871F4 Da71F46 | Half-lined Fully lined Fully lined Fully lined | worm-gear rotation | DB371F/P DB371PFA DB371F4 Da371F46 | half-lining Lined Fully lined Fully lined |
get angry | DB671F/P DB671PFA Dg671F4 Dg671F46 | Half-lined Fully lined Fully lined Fully lined | Electricity | De971F/P DB971PFA De971F De971F46 | Half-lined Fully lined Fully lined Fully lined |
serial number | Part Name | gray cast iron | carbon steel | stainless steels | Ultra-low carbon stainless steel | ||
Z | C | P | R | PL | RL | ||
1 | Upper and lower valve body | A126 C.135A | A216 WCB | A351 CF8 | A351 CF8M | A351 CF3 | A351 CF3M |
2 | butterfly plate | A216 WCB | A105 | A351 CF8 | A351 CF8M | A351 CF3 | A351 CF3M |
3 | Butterfly plate shaft | A182 F6 | A182 F6 | A182 F304 | A182 F316 | A182 F304L | A182 F316L |
4 | Lining/seat | PTEE(F4)PCTFE(F3)FEP(F46)PFA(Soluble polytetrafluoroethylene)PO(polyolefin) | |||||
5 | O-ring | FPM(fluoroelastomer) | FPM(Fluoroelastomer) | ||||
6 | pad | SiR(silicone rubber) | SiR(silicone rubber) | ||||
7 | Adjustable Positioning Seat | A182 F304 | A182 F304 | A182 F304 | A182 F304 | A182 F304L | A182 F316L |
8 | bolt (male component of nut and bolt) | A193 B7 | A193 B7 | A193 B8M | A193 B8M | A193 B8M | A193 B8M |
9 | nut (female component of nut and bolt) | A1942H | A1942H | A1948 | A1948 | A1948 | A1948 |
10 | video game controller | ZL101(Casting Aluminum Alloy) | |||||
Nominal diameter | standard value | reference point | |||||||||
DN (mm) | NPS (inch) | L | D | D1 | D2 | f | b | Z-Φd | Do | H | W(kg |
Class 150Lb | |||||||||||
50 | 2 | 43 | - | 120.7 | 92.1 | 3.5 | - | 4-Φ19 | 200 | 150 | 5 |
65 | 21/2 | 46 | - | 139.7 | 104.8 | 3.5 | - | 4-Φ19 | 250 | 160 | 7 |
80 | 3 | 46 | - | 152.4 | 127 | 3.5 | - | 4-Φ19 | 2580 | 170 | 10 |
100 | 4 | 52 | - | 190.5 | 157.2 | 3.5 | - | 8-Φ19 | 300 | 185 | 14 |
125 | 5 | 56 | - | 215.9 | 185.7 | 3.5 | - | 8-Φ22 | 300 | 210 | 22 |
150 | 6 | 56 | - | 241.3 | 215.9 | 4 | - | 8-Φ22 | 200* | 230 | 32 |
200 | 8 | 60 | - | 298.5 | 269.9 | 4 | - | 8-Φ22 | 240* | 285 | 66 |
250 | 10 | 68 | - | 362 | 323.8 | 4 | - | 12-Φ25 | 240* | 325 | 80 |
300 | 12 | 78 | - | 431.8 | 381 | 4.5 | - | 12-Φ25 | 280* | 360 | 94 |
350 | 14 | 78 | - | 476.3 | 412.8 | 4.5 | - | 12-Φ28.6 | 280* | 430 | 125 |
400 | 16 | 102 | - | 539.8 | 469.9 | 5 | - | 16-Φ28.6 | 320* | 475 | 150 |
450 | 18 | 114 | - | 577.9 | 533 | 5 | - | 16-Φ31.8 | 320* | 525 | 172 |
500 | 20 | 127 | - | 635 | 584 | 6 | - | 20-Φ31.8 | 360* | 565 | 225 |
600 | 24 | 154 | - | 749.3 | 692 | 6 | - | 20-Φ34.9 | 360* | 630 | 290 |
The flange size in the table is according to ASME B16.5 when NPS≤24, and according to ASME B16.47 when NPS>24.
Flange size D, D1, D2, Z-φd, f, d, the value is the standard flange size connected with the butterfly valve, the size code in the sketch is only part of it.
