Class 2500 Raised Face Weld Neck Orifice Flanges Dimensions

Size in Inch	Size in mm	Outer Dia.	Flange Thick.	Hub OD	Weld Neck OD	Welding Neck Length	RF Dia.	RF Height	PCD	Orifice Hole dia	No of Bolts	Bolt Size UNC	RF Stud Length	Hole Size	ISO Stud Size	Weight in kg
		A	B	C	D	E	F	G	H	I
1	25	160	38.1	57	33.5	92	50.8	7	108	6.4	4	7/8	150	1	M24	6.5
1 1/2	40	205	44.5	79	48.3	111	73	7	146	6.4	4	1 1/8	180	1 1/4	M30	13
2	50	235	50.8	95	60.3	127	92.1	7	171.4	6.4	8	1	185	1 1/8	M27	19
2 1/2	65	265	57.2	114	73	143	104.8	7	196.8	6.4	8	1 1/8	205	1 1/4	M30	24
3	80	305	66.7	133	88.9	168	127	7	228.6	9.5	8	1 1/4	230	1 3/8	M33	43
4	100	355	76.2	165	114.3	190	157.2	7	273	12.7	8	1 1/2	260	1 5/8	M39	66
6	150	485	108	235	168.3	273	215.9	7	368.3	12.7	8	2	350	2 1/8	M52	172
8	200	550	127	305	219.1	318	269.9	7	438.2	12.7	12	2	385	2 1/8	M52	261
10	250	675	165.1	375	273	419	323.8	7	539.8	12.7	12	2 1/2	490	2 5/8	M64	485
12	300	760	184.2	441	323.8	464	381	7	619.1	12.7	12	2 3/4	540	2 7/8	M72	730

» Come with either raised faces or ring type joint (RTJ) facings.
» Used for flow/rate metering of piping systems
» Available with raised face or RTJ face
» There are the orifice plate carriers in these flanges for the reason of fitting meter connections.
» The additional bolts available serve as a jack to allow the separation of the two flanges to change the orifice plate or for other relevant services like inspection.
» Steel Tubes can supply the plate, pressure connection holes, and jack screws with the orifice flange unit
» The orifice flanges have modifications of radial tapped holes in the flange ring for meter connections. Need A Reliable Fitting?