Orifice Flange TypeOF TypeOFJ
Outline
Orifice Flange assembly is the combination of orifice plate, flanges having pressure outlet opening, and bolts, nuts and gasket.
Flanges are, of JIS, ASME, JPI etc.
These shall be connected to line pipe by:
１）butt welding (weld neck) or,
２）insert and weld （slip-on, socket weld).
Also, there are flat face(FF), raised face(RF), ring joint(RTJ), etc, depends on the shape of gasket seat.
Flange tap is used for take out differential pressure.
For estimation or order, please advice the fllowing data.
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Facing
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OF : RF-Raised face
OFJ: RTJ-Ring joint groove |
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Size
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50A～400A
If you need the sizes of loss than 50A or more than 400A, please ask us. |
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Rating
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Type OF：
JIS10K , 20K , 30K JPI/ANSI 150 , 300 , 600 , 900 Type OFJ： JPI/ANSI 600 , 900 , 1500 |
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Flange
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Weld-neck：WN
Slip-on weld：S-ON （only for JIS10K） Slip-on weld：SW （～80A , JIS10K and 20K） |
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Orifice Flange material
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SF440A , SFVC2A , SUSF304 , 304L , 316 , 316L , Titanium , HASTELLOY, etc.
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Bolt / Nut material
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SNB7/S45C , SUS304/SUS304 etc
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Differential pressure Outlet Connection
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Rc1/2 fimale screw
Nipple＋R1/2screw , Nipple+NPT1/2 screw Nipple , plane-end Nipple＋Pressure take out flange |
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Plate Type
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Concentric sharp edge , Quadrant , Eccentric , Segmental
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Orifice Plate material
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SUS304 , 304L , 316 , 316L , Titanium , Hastelloy , etc.
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Others
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If any of the following item is necessary, please advise.
Plate thickness Gasket material Serration Hardening of orifice edge Special shape, etc. Special material, etc. |
Please advise the necessary data on“Flow element Specification”for
calculation of orifice sizing , differential pressure and flow rate, referencing “Necessary items for flow calculation”
