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Rectangular Pull Ring Type Adjustable Damper CB/T 3726-1995 Type F

The Adjustable damper is also called the air volume control valve, which is used to seal the pipeline and adjust and distribute the air volume.

All models in the standard of CB/T 3726-1995 are manual operation type with a hand lever. they are suitable for various types of ship ventilation systems, but not for thermally insulated spiral ducts.

Type F of CB/T 3726-1995 is rectangular rectangular ring type, used in middle or end of rectangular shape air piping of ventilation system. When used in middle of air piping, flange net shall be canceled.

CB/T 3726-1995 Type F Adjustable Damper Structure:

Dimensions Data Sheet of each Nominal Size-3726-1995 Type F Adjustable Damper`

Air Piping			Flange Size		Air Shutter Main Size				Weight
Nominal Size			Outer Side	Inner Size	Air Shutter Main Size				Weight
DN	a	b	AxB	A1xB1	E	D	L	δ	kg≈
80	60	90	115x115	65x95	68	85	98	2	3.1
100	60	140	115x195	65x145	68	135	98		4.1
100	80	120	135x175	85x125	90	115	120		4.1
125	60	220	115x275	65x225	68	215	98		4.6
	80	160	135x215	85x165	90	155	120
	100	130	155x185	105x135	112	125	143
150	80	250	135x305	85x255	90	245	120		5.2
	100	200	155x255	105x205	113	195	143
	120	150	175x205	125x155	135	145	165
175	80	350	135x405	85x355	90	345	120		6.5
	100	250	155x305	105x255	113	245	143
	120	210	175x265	125x215	135	205	165
200	100	350	155x405	105x355	113	345	143		7.9
	120	280	175x335	125x285	135	275	165
	150	220	206x276	156x226	170	215	200
250	120	470	175x525	125x475	135	465	165		9.8
	150	350	206x406	156x356	170	345	200
	190	280	246x336	196x286	215	275	245
300	150	530	206x586	156x536	170	525	200	2.5	12.9
	190	390	246x446	196x396	215	385	245
	240	300	297x357	247x307	271	295	301
350	190	550	246x606	196x556	215	545	245		15.7
	240	420	297x477	247x427	271	415	301
	290	360	350x420	300x370	331	355	361
400	190	760	246x816	196x766	215	755	245		19.4
	240	550	297x607	247x557	271	545	301
	290	460	350x520	300x470	331	455	361
450	240	730	297x787	247x737	271	725	301		24.9
	290	580	350x640	300x590	331	575	361
	350	480	410x540	360x490	398	475	428
500	240	930	297x987	247x937	271	925	301		28.8
	290	730	350x790	300x740	331	725	361
	350	600	410x660	360x610	398	595	428
600	290	1100	350x1160	300x1110	331	1095	361		38.2
	350	880	410x940	360x890	398	875	428
	420	710	480x770	430x720	476	705	506
700	350	1240	410x1300	360x1250	398	1235	428		51.1
	420	990	480x1050	430x1000	476	985	506
	500	810	560x870	510x820	566	805	596