Pressboard Full-Face Flange Protectors

PRB Series

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Specifications:

Material: Pressboard

Features:

Designed to ANSI/ASME B16.5 and ANSI/ASME B16.47 specifications
Provides full face flange protection on the flange's exposed sealing surface
Fasteners required see below chart

Part Number	Nominal Pipe Size In	Class Pressure Rating	Actual OD In	Bolt Circle Dia.
PRB150-1/2A	1/2	150	3.500	2.375
PRB300-1/2A	1/2	300, 400, 600	3.750	2.625
PRB900-1/2A	1/2	900, 1500	4.750	3.250
PRB2500-1/2A	1/2	2500	5.250	3.500
PRB150-3/4A	3/4	150	3.875	2.750
PRB300-3/4A	3/4	300, 400, 600	4.625	3.250
PRB900-3/4A	3/4	900, 1500	5.125	3.500
PRB2500-3/4A	3/4	2500	5.500	3.750
PRB150-1A	1	150	4.250	3.125
PRB300-1A	1	300, 400, 600	4.875	3.500
PRB900-1A	1	900, 1500	5.875	4.000
PRB2500-1A	1	2500	6.250	4.250
PRB150-1-1/4A	1-1/4	150	4.625	3.500
PRB300-1-1/4A	1-1/4	300, 400, 600	5.250	3.875
PRB900-1-1/4A	1-1/4	900, 1500	6.250	4.375
PRB2500-1-1/4A	1-1/4	2500	7.250	5.125
PRB150-1-1/2A	1-1/2	150	5.000	3.875
PRB300-1-1/2A	1-1/2	300, 400, 600	6.125	4.500
PRB900-1-1/2A	1-1/2	900, 1500	7.000	4.875
PRB2500-1-1/2A	1-1/2	2500	8.000	5.750
PRB150-2A	2	150	6.000	4.750
PRB300-2A	2	300, 400, 600	6.500	5.000
PRB900-2A	2	900, 1500	8.500	6.500
PRB2500-2A	2	2500	9.250	6.750
PRB150-2-1/2A	2-1/2	150	7.000	5.500
PRB300-2-1/2A	2-1/2	300, 400, 600	7.500	5.875
PRB900-2-1/2A	2-1/2	900, 1500	9.625	7.500
PRB2500-2-1/2A	2-1/2	2500	10.500	7.750
PRB150-3A	3	150	7.500	6.000
PRB300-3A	3	300, 400, 600	8.250	6.625
PRB900-3A	3	900	9.500	7.500
PRB1500-3A	3	1500	10.500	8.000
PRB2500-3A	3	2500	12.000	9.000
PRB150-3-1/2A	3-1/2	150	8.500	7.000
PRB300-3-1/2A	3-1/2	300, 400, 600	9.000	7.250
PRB150-4A	4	150	9.000	7.500
PRB300-4A	4	300, 400	10.000	7.875
PRB600-4A	4	600	10.750	8.500
PRB900-4A	4	900	11.500	9.250
PRB1500-4A	4	1500	12.250	9.500
PRB2500-4A	4	2500	14.000	10.750
PRB150-5A	5	150	10.000	8.500
PRB300-5A	5	300, 400	11.000	9.250
PRB600-5A	5	600	13.000	10.500
PRB900-5A	5	900	13.750	11.000
PRB1500-5A	5	1500	14.750	11.500
PRB2500-5A	5	2500	16.500	12.750
PRB150-6A	6	150	11.000	9.500
PRB300-6A	6	300, 400	12.500	10.625
PRB600-6A	6	600	14.000	11.500
PRB900-6A	6	900	15.000	12.500
PRB1500-6A	6	1500	15.500	12.500
PRB2500-6A	6	2500	19.000	14.500
PRB150-8A	8	150	13.500	11.750
PRB300-8A	8	300, 400	15.000	13.000
PRB600-8A	8	600	16.500	13.750
PRB900-8A	8	900	18.500	15.500
PRB1500-8A	8	1500	19.000	15.500
PRB2500-8A	8	2500	21.750	17.250
PRB150-10A	10	150	16.000	14.250
PRB300-10A	10	300, 400	17.500	15.250
PRB600-10A	10	600	20.000	17.000
PRB900-10A	10	900	21.500	18.500
PRB1500-10A	10	1500	23.000	19.000
PRB2500-10A	10	2500	26.500	21.250
PRB150-12A	12	150	19.000	17.000
PRB300-12A	12	300, 400	20.500	17.750
PRB600-12A	12	600	22.000	19.250
PRB900-12A	12	900	24.000	21.000
PRB1500-12A	12	1500	26.500	22.500
PRB2500-12A	12	2500	30.000	24.380
PRB150-14A	14	150	21.000	18.750
PRB300-14A	14	300, 400	23.000	20.250
PRB600-14A	14	600	23.750	20.750
PRB900-14A	14	900	25.250	22.000
PRB1500-14A	14	1500	29.500	25.000
PRB150-16A	16	150	23.500	21.250
PRB300-16A	16	300, 400	25.500	22.500
PRB600-16A	16	600	27.000	23.750
PRB900-16A	16	900	27.750	24.250
PRB1500-16A	16	1500	32.500	27.750
PRB150-18A	18	150	25.000	22.750
PRB300-18A	18	300, 400	28.000	24.750
PRB600-18A	18	600	29.250	25.750
PRB900-18A	18	900	31.000	27.000
PRB1500-18A	18	1500	36.000	30.500
PRB150-20A	20	150	27.500	25.000
PRB300-20A	20	300, 400	30.500	27.000
PRB600-20A	20	600	32.000	28.500
PRB900-20A	20	900	33.750	29.500
PRB1500-20A	20	1500	38.750	32.750
PRB150-22A	22	150	29.500	27.250
PRB300-22A	22	300, 400	33.000	29.250
PRB600-22A	22	600	34.250	30.625
PRB150-24A	24	150	32.000	29.50
PRB300-24A	24	300, 400	36.000	32.000
PRB600-24A	24	600	37.000	33.000
PRB900-24A	24	900	41.000	35.500
PRB1500-24A	24	1500	46.000	39.000
PRB150-26A	26	150	34.250	31.750
PRB300-26A	26	300, 400	38.250	34.500
PRB600-26A	26	600	40.000	36.000
PRB900-26A	26	900	42.750	37.500
PRB150-28A	28	150	36.500	34.000
PRB300-28A	28	300, 400	40.750	37.000
PRB600-28A	28	600	42.250	38.000
PRB900-28A	28	900	46.000	40.250
PRB150-30A	30	150	38.750	36.000
PRB300-30A	30	300, 400	43.000	39.250
PRB600-30A	30	600	44.500	40.250
PRB150-32A	32	150	41.750	38.500
PRB300-32A	32	300, 400	45.250	41.500
PRB600-32A	32	600	47.000	42.500
PRB150-34A	34	150	43.750	40.500
PRB300-34A	34	300	47.500	43.500
PRB150-36A	36	150	46.000	42.750
PRB300-36A	36	300	50.000	46.000

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Pressboard Full-Face Flange Protectors

PRB Series