详细介绍：

RE/RE-7R Replaceable Element Disks

The unique fail          safe design of the RE™ type disk assures the disk cannot be installed          incorrectly in the safety head as the disk will burst at its rated burst          pressure in either direction. Additionally, the disk and safety head          assembly may be installed in either direction between pipe flanges. A disk          with a burst pressure of 22psig (1.52 bar) or above will withstand full          vacuum.

• RE-7R™ Safety Head
             The RE™ type disk is installed in a            precision machined RE-7R™ safety head for direct installation between            standard international pipe flanges

• Flange Ratings
             The safety heads are designed to fit            between all standard international pipe flanges, ANSI, DIN, AFNOR, BS,            JIS and to nestle within the flange bolts

• Material
             Safety heads are available in impregnated            graphite or 316SS as standard

• Patented: US 5,121,847 Japan 2611105

Specifications

Nominal Size		Burst Ratings @ 22ºC (72ºF)				Internal                  Diameter		Total Assembly Thickness
		min.		max.				316SS		Graphite
in.	mm	barg	psig	barg	psig	mm	in.	mm	in.	mm	in.
1	25	0.70	10.0	30.0	435	32	1.26	28	1.10	28	1.10
1.5	40	0.48	7.0	20.0	290	48	1.89	28	1.10	31	1.22
2	50	0.20	3.0	15.0	217	64	2.52	28	1.10	32	1.26
2.5	65	0.20	3.0	12.0	174	76	2.99	30	1.18	37	1.46
3	80	0.15	2.2	10.0	145	89	3.50	35	1.38	42	1.65
4	100	0.15	2.2	8.0	116	114	4.49	37	1.46	47	1.85
5	125	0.10	1.5	6.0	87	140	5.51	40	1.57	47	1.85
6	150	0.07	1.0	5.0	72	165	6.50	44	1.73	47	1.85
8	200	0.07	1.0	4.0	58	216	8.50	50	1.97	61	2.38
10	250	0.07	1.0	3.0	43	267	10.51	53	2.09	68	2.68
12	300	0.07	1.0	2.5	36	318	12.52	61	2.40	76	2.99
14	350	0.07	1.0	2.0	29	356	14.02	63	2.48	80	3.15
16	400	0.07	1.0	1.5	21	406	15.98	70	2.76	83	3.27
18	450	0.07	1.0	1.5	21	457	17.99	77	3.03	92	3.62
20	500	0.07	1.0	1.2	17	508	20.00	88	3.46	105	4.13
24	600	0.07	1.0	1.2	17	610	24.02	93	3.66	111	4.37