ANSI/ ASME B16.36 class 300 slip on orifice flange
Orifice flange is used to measure the flow rate of the liquids in a piping system,it could be water,gas or other liquids.The orifice flanges are usually used with the orifice plates or meters in the pipe joints.Orifice flanges are manufactured to ANSI/ASME B16.36 standard in multiple size and material grades.In ANSI/ASME B16.36 class 300 there are three types of orifice flange:welding neck orifice flange,slip on orifice flange and threaded orifice flange.And the sealing face of orifice flange can be raised face(RF) or ring type joint(RTJ).
ANSI ASME B16.36 class 300 slip on orifice flange
ANSI ASME B16.36 class 300 slip on orifice flange
Dimensions of ANSI/ASME B16.36 class 300 slip on orifice flange:
| Nominal pipe size | Outside diameter of raised face | Outside diameter of flange | Thickness of flange,min | Length through hub | Diameter of hub | Bore | Diameter of pressure connection | Drilling Template | Bolt length[3][4] | ||||
| R | O | tf | Y2 | X | B2 | TT | Bolt circle | Number of holes | Diameter of holes | Diameter of bolts | Machine bolts | Stud bolts | |
| 1 | 50.8 | 125 | 36.6 | 46 | 54 | 34.5 | 6.4 | 88.9 | 4 | 1 1/16 | 5/8 | 115 | 125 |
| 1½ | 73.0 | 155 | 36.6 | 46 | 70 | 49.5 | 6.4 | 114.3 | 4 | 1 3/16 | 3/4 | 120 | 135 |
| 2 | 92.1 | 165 | 36.6 | 48 | 84 | 61.9 | 6.4 | 127.0 | 8 | 1 1/16 | 5/8 | 115 | 125 |
| 2½ | 104.8 | 190 | 36.6 | 49 | 100 | 74.6 | 6.4 | 149.2 | 8 | 1 3/16 | 3/4 | 120 | 135 |
| 3 | 127.0 | 210 | 36.6 | 51 | 117 | 90.7 | 9.5 | 168.3 | 8 | 1 3/16 | 3/4 | 120 | 135 |
| 4 | 157.2 | 255 | 36.6 | 52 | 146 | 116.1 | 12.7 | 200.0 | 8 | 1 3/16 | 3/4 | 120 | 135 |
| 6 | 215.9 | 320 | 36.6 | 52 | 206 | 170.7 | 12.7 | 269.9 | 12 | 7/8 | 3/4 | 120 | 135 |
| 8 | 269.9 | 380 | 39.7 | 60 | 260 | 221.5 | 12.7 | 330.2 | 12 | 1 | 7/8 | 125 | 145 |
| 10 | 323.8 | 445 | 46.1 | 65 | 321 | 276.2 | 12.7 | 387.4 | 16 | 1 1/8 | 1 | 145 | 165 |
| 12 | 381.0 | 520 | 49.3 | 71 | 375 | 327.0 | 12.7 | 450.8 | 16 | 1 1/4 | 1 1/8 | 160 | 180 |
| 14 | 412.8 | 585 | 52.4 | 75 | 425 | 359.2 | 12.7 | 514.4 | 20 | 1 1/4 | 1 1/8 | 165 | 185 |
| 16 | 469.9 | 650 | 55.6 | 81 | 483 | 410.5 | 12.7 | 571.5 | 20 | 1 3/8 | 1 1/4 | 180 | 195 |
| 18 | 533.4 | 710 | 58.8 | 87 | 533 | 461.8 | 12.7 | 628.6 | 24 | 1 3/8 | 1 1/4 | 185 | 205 |
| 20 | 584.2 | 775 | 62.0 | 94 | 587 | 513.1 | 12.7 | 685.8 | 24 | 1 3/8 | 1 1/4 | 190 | 215 |
| 24 | 692.2 | 915 | 68.3 | 105 | 702 | 616.0 | 12.7 | 812.8 | 24 | 1 5/8 | 1 1/2 | 210 | 240 |
General notes:
- (a) Dimensions are in millimeters, except for bolts and bolt holes. Reference Mandatory Appendix I for U.S. Customary.
- (b) Weld neck flanges NPS 3 and smaller are identical to Class 600 flanges and may be so marked.
- (c) All other dimensions are in accordance with ASME B16.5.
Notes:
- [1] Other NPT sizes may be furnished if required.
- [2] For slip-on and threaded flanges,verify that TT drilling extends to inside diameter of pipe after assembly and is free from burrs.
- [3] Bolt lengths include allowance for orifice and gasket thickness of 6 mm (0.25 in.) for NPS 1–12 and 10 mm (0.38 in.) for NPS 14–24.
- [4] In conformance with ASME B16.5,stud bolt lengths do not include point heights.
- [5] Bore diameter of weld neck flanges is to be specified by the purchaser.
- [6] Threaded flanges are furnished in NPS 1-8 only.
Materials of ANSI/ASME B16.36 welding neck orifice flange:
Carbon steel: ASTM A105,A350 LF2,SS400,P235GH,P250GH,C22.8,Q235,20#,16Mn.
Stainless steel: ASTM A182 F304,F304L,F316,F316L,F321,F347,F310,F44,F51 etc.
Alloy steel: ASTM A694 F42,F46,F52,F56,F60,F65,F70,A182 F5,F9,F91,F12,F11,F22 etc.
Haihao Group can provide a variety orifice flange,as follows:
- ANSI/ASME B16.36 class 300 welding neck orifice flange
- ANSI/ASME B16.36 class 300 slip on orifice flange
- ANSI/ASME B16.36 class 300 threaded orifice flange
- ANSI/ASME B16.36 class 400 welding neck RF orifice flange
- ANSI/ASME B16.36 class 400 welding neck RTJ orifice flange
- ANSI/ASME B16.36 class 600 welding neck RF orifice flange
- ANSI/ASME B16.36 class 600 welding neck RTJ orifice flange
- ANSI/ASME B16.36 class 900 welding neck RF orifice flange
- ANSI/ASME B16.36 class 900 welding neck RTJ orifice flange
- ANSI/ASME B16.36 class 1500 welding neck RF orifice flange
- ANSI/ASME B16.36 class 1500 welding neck RTJ orifice flange
- ANSI/ASME B16.36 class 2500 welding neck RF orifice flange
- ANSI/ASME B16.36 class 2500 welding neck RTJ orifice flange
Haihao Group manufacture & supply piping products more than 30 years,which contain seamless steel pipes,welded steel pipes(ERW,SSAW,LASW pipes),butt welding & forged pipe fittings(elbow,tee,reducer,coupling,cap,bend,cross,nipple,outlet,etc) and forged flanges(weld neck flange,blind flange,slip on flange,lap joint flange,threaded flange,socket weld flange,orifice flange,plate flange,etc).If you want to know more about our piping products,please email us:sales@haihaogroup.com