Purpose and Characteristics
It can automatically sense the supply air temperature and adjust the air supply direction automatically.
In summer, when the supply air temperature is lower than 17°C, the airflow of the diffuser presents horizontal attached diffusion.
In winter, when the supply air temperature is higher than 28°C, the airflow blows vertically downward to achieve a longer air supply throw.
The temperature-sensing actuator requires no power supply, featuring energy saving, environmental protection, maintenance-free, stable performance and intelligent operation.

Description
Available specifications include Φ150, Φ200, Φ250, Φ300, Φ350, Φ400 and Φ450.
Butterfly valve is available as an optional accessory.
Custom types: Manual type, Temperature-sensing type.


SH-YS Thermostatic Diffuser Dimension Drawing


Model Designation Method of SH-YS Thermostatic Diffuser


SH-YS Thermostatic Diffuser Dimension Comparison Table

Model & Specification	Neck Size(mm)	Face Size(mm)	Opening Size(mm)	T(mm)	w(mm)	H(mm)
WATCD-F-150	150	338	285	15	30	125
WATCD-F-200	200	438	385	15	30	135
WATCD-F-250	250	502	450	20	30	145
WATCD-F-300	300	608	520	25	45	155
WATCD-F-350	350	708	620	25	45	165
WATCD-F-400	400	808	720	25	45	175
WATCD-F-450	450	908	820	25	45	185

Performance Table of SH-YS Thermostatic Diffuser

Model & Specification	Neck Air Velocity (m/s)		2	2.5	3	3.5	4	4.5	5	6	6.5
WATCD-F -150	Air Volume (m³/h)		127	159	191	223	254	286	318	382	413
	Static Pressure Loss (Pa)	H	2	3	5	6	8	10	13	18	21
		V	5	8	11	15	20	25	31	45	53
	Diffusion Radius (m)	H	0.5	0.6	0.8	0.9	1	1.2	1.3	1.6	1.8
	Effective Throw (m)	V	1.1	1.4	1.6	1.9	2.2	2.5	2.7	3.3	3.6
	Noise Level dB (A)	H	-	-	-	26	28	31	33	36	40
		V	-	-	26	28	30	32	34	37	42
WATCD-F -200	Air Volume (m³/h)		226	283	339	396	452	509	565	678	735
	Static Pressure Loss (Pa)	H	2	3	5	6	8	10	13	18	21
		V	5	8	11	15	20	25	31	45	53
	Diffusion Radius (m)	H	0.7	0.9	1.1	1.3	1.4	1.6	1.8	2.2	2.4
	Effective Throw (m)	V	1.4	1.8	2.1	2.5	2.9	3.2	3.6	4.3	4.6
	Noise Level dB (A)	H	-	26	28	30	32	34	36	38	42
		V	-	28	31	32	35	36	38	40	44
WATCD-F -250	Air Volumem3/h		286	358	429	501	572	644	715	858	930
	Static Pressure Loss (Pa)	H	2	3	5	6	8	10	13	18	21
		V	5	8	11	15	20	25	31	45	53
	Diffusion Radius (m)	H	0.9	1.1	1.4	1.6	1.8	2	2.3	2.7	2.9
	Effective Throw (m)	V	1.8	2.2	2.7	3.1	3.5	4	4.5	5.3	5.8
	Noise Level dB (A)	H	26	28	30	32	34	36	38	41	43
		V	28	30	32	34	37	39	41	42	45
WATCD-F -300	Air Volume (m³/h)		509	636	763	890	1017	1145	1272	1526	1653
	Static Pressure Loss (Pa)	H	2	3	5	6	8	10	13	18	21
		V	5	8	11	15	20	25	31	45	53
	Diffusion Radius (m)	H	1	1.3	1.6	1.8	2.1	2.4	2.6	3.1	3.4
	Effective Throw (m)	V	2.1	2.6	3.1	3.7	4.1	4.7	5.2	6.3	6.8
	Noise Level dB (A)	H	28	30	32	35	36	37	39	42	44
		V	31	33	35	37	38	40	42	43	46
WATCD-F -350	Air Volume (m³/h)		692	866	1039	1212	1384	1558	1731	2077	2250
	Static Pressure Loss (Pa)	H	2	3	5	6	8	10	13	18	21
		V	5	8	11	15	20	25	31	45	53
	Diffusion Radius (m)	H	1.2	1.5	1.8	2.1	2.4	2.7	3	3.6	3.9
	Effective Throw (m)	V	2.5	3	3.6	4.2	4.8	5.4	6	7.2	7.5
	Noise Level dB (A)	H	29	30	32	35	37	39	41	43	45
		V	31	32	35	37	39	41	43	45	47
WATCD-F -400	Air Volume (m³/h)		904	1130	1357	1583	1808	2035	2261	2713	2939
	Static Pressure Loss (Pa)	H	2	3	5	6	8	10	13	18	21
		V	5	8	11	15	20	25	31	45	53
	Diffusion Radius (m)	H	1.3	1.7	2	2.3	2.7	3	3.3	4	4.3
	Effective Throw (m)	V	3	3.8	4.5	5.3	6	6.8	7.5	9	9.8
	Noise Level dB (A)	H	31	33	35	37	39	40	42	44	46
		V	33	36	38	40	42	42	44	46	48
WATCD-F -450	Air Volume (m³/h)		1145	1431	1717	2003	2289	2575	2861	3434	3720
	Static Pressure Loss (Pa)	H	2	3	5	6	8	10	13	18	21
		V	5	8	11	15	20	25	31	45	53
	Diffusion Radius (m)	H	1.4	1.8	2.1	2.5	2.8	3.1	3.5	4.2	4.5
	Effective Throw (m)	V	3.7	4.6	5.6	6.5	7.4	8.3	9.2	11.1	12
	Noise Level dB (A)	H	31	33	35	37	39	41	43	45	47
		V	34	37	39	40	42	43	45	47	49
Note: 1. H stands for horizontal attached airflow, and V stands for vertical downward airflow. The effective throw and diffusion radius refer to the distance from the air outlet to the position where the wind speed is 0.5 m/s. 2. The data in the above table are tested based on isothermal airflow. 3. For non-isothermal airflow, the effective throw and diffusion radius shall be corrected according to the air supply temperature difference.