WELDING NECK ORIFICE CLASS 400 FLANGES

Description

DrillingRing Type Joint
Nom SizeODThicknessOD of RFDia at BaseDia BevelLTHDia of Pressure ConnectionBolt CircleHole Dia# of holesBolt DiaGrove #Pitch DiaGroove DepthGroove widthRad at BottomSpec Oval RH
OCRXAYTTPEFr maxW
in4101.56.195.754.53.5 1/27.8818 7/8R375.8750.3120.4690.031.06
mm25438.1157146114.388.912.7200.225.422.2149.2257.92511.9130.826.9
in612.51.628.58.126.634.06 1/210.62112 7/8R458.3120.3120.4690.031.06
mm317.541.1216206168.410312.7269.725.422.2211.1257.92511.9130.826.9
in8151.8810.6210.258.634.62 1/2131.12121R4910.6250.3120.4690.031.06
mm38147.8270260219.211712.7330.228.425.4269.8757.92511.9130.826.9
in1017.52.1212.7512.6210.754.88 1/215.251.25161 1/8R5312.750.3120.4690.031.06
mm444.553.8324321273.112412.7387.431.828.6323.8507.92511.9130.826.9
in1220.52.251514.7512.755.38 1/217.751.38161 1/4R57150.3120.4690.031.06
mm520.757.2381375323.913712.7450.935.131.8381.0007.92511.9130.826.9
in14232.3916.2516.75145.88 1/220.251.38201 1/4R6116.50.3120.4690.031.06
mm584.260.7413426355.614912.7514.435.131.8419.1007.92511.9130.826.9
in1625.52.518.519166 1/222.51.5201 3/8R6518.50.3120.4690.031.19
mm647.763.5470483406.415212.7571.538.134.9469.9007.92511.9130.830.2
in18282.622121186.5 1/224.751.5241 3/8R69210.3120.4690.031.19
mm711.266.5533533457.216512.7628.738.134.9533.4007.92511.9130.830.2
in2030.52.752323.12206.62 1/2271.62241 1/2R73230.3750.5310.061.25
mm774.769.958458750816812.7685.841.138.1584.2009.52513.4871.531.8
in2436327.2527.62246.88 1/2321.89241 3/4
mm914.476.2692.2702609.6174.812.7812.84844.5

Note: Weld neck flanges NPS 3″ and smaller are identical to Class 600 flanges and may be so marked.

(1) Bore diameter to be specified by purchaser
(2) Other NPT and SW connections available upon request.
Welding Neck Orifice Class 400 Flange PDF (for printing).

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