Cutter Sizes Hot Tapping through Gate Valves

The table below is for reference only. If you plan to make a Hot Tap, let the supplier confirm the maximum bore of the valve.

NPS	Class	Cutter Sizes inch	Cutter Sizes mm
2	150	1.3/8	34.92
	300	1.1/4	31.75
	600	1	25.4
2.1/2	150	1.13/16	46.04
	300	1.11/16	42.86
	600	1.3/8	34.93
3	150	2.1/2	63.5
	300
	600	2.9/32	57.94
4	150	3.17/32	89.69
	300
	600	3.1/2	88.9
6	150	5.15/32	138.91
	300
	600	5.19/32	142.08
8	150	7.3/8	187.33
	300
	600
10	150	9.11/32	237.33
	300
	600	9.1/4	234.95
12	150	11.9/32	286.54
	300
	600	11.1/8	282.58
14	150	12.3/4	323.85
	300
	600	12.7/16	315.91
16	150	14.5/16	363.54
	300
	600
18	150	15.1/16	382.59
	300
	600
20	150	17	431.8
	300
	600
24	150	21	533.4
	300
	600	20.3/4	527.05

The table above is for reference only. If you plan to make a Hot Tap, let the supplier confirm the maximum bore of the valve.

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Cutter Sizes Hot Tapping through Gate Valves

NPS