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Rectangular Adjustable Simple Type Damper CB/T 3726-1995 Type D

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 D of CB/T 3726-1995 is rectangular simple type, used in middle of cube shape air piping of ventilation system.

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

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

Air Piping			Air Shutter Main Size
Nominal Size			Air Shutter Main Size						Weight
DN	a	b	E	D	L	L1	R≈	δ	kg≈
80	60	90	88	58	100	50	30	2	0.3
100	60	140	138	58	150	75	40		0.4
100	80	120	118	78	130	65			0.4
125	60	220	218	58	230	115			0.5
	80	160	158	78	170	85
	100	130	128	98	140	70
150	80	250	248	78	260	130	60		0.6
	100	200	198	98	210	105
	120	150	148	118	160	80
175	80	350	348	78	360	100			0.9
	100	250	248	98	260	130
	120	210	208	118	220	110
200	100	350	348	98	360	180			1.3
	120	280	278	118	290	145
	150	220	218	148	230	115
250	120	470	468	118	480	240	100		1.7
	150	350	348	148	360	180
	190	280	278	188	290	145
300	150	530	528	148	540	270		2.5	2.3
	190	390	388	188	400	200
	240	300	298	238	310	155
350	190	550	548	188	560	280			2.6
	240	420	418	238	430	215
	290	360	358	288	370	185
400	190	760	758	188	770	385			3.2
	240	550	548	238	560	280
	290	460	458	288	470	235
450	240	730	728	238	740	370	180		4.3
	290	580	578	288	590	295
	350	480	478	348	490	245
500	240	930	928	238	940	470			5.1
	290	730	728	288	740	370
	350	600	598	348	610	305
600	290	1100	1098	288	1110	565			7.2
	350	880	878	348	890	445
	420	710	708	418	720	360
700	350	1240	1238	348	1250	625	200		9.8
	420	990	988	418	1000	500
	500	810	808	498	820	410