SR13 series floating/modulating valve is driven by bi-directional motor. The floating /modulating thermostat will continuously collect the data and make processing, and send out control signals to operate or stop the motor so as to control the open/close angle of the valve.

Material	Valve body: Forged brass
	Seal: Nitrile butadiene rubber (NBR)
	Chassis and Cover: Fireproof ABS plastic
Working media	Chilled/hot water
Media temperature	2~94℃ (36~201℉)
Body pressure	1.6Mpa (232psi)
Pipe connection:	NPT(N), BSP(G), Sweat(S), Inverted Flare(I)
Sealing method	Rubber ball sealing
Power supply	24VAC(A1), 110VAC(A2), 120VAC(A3), 220VAC(A4), 230VAC(A5) , 50/60Hz
Working ambient temperature	＜40'C (104'F)
Working ambient humidity	10~90% RH no condensation
Storage temperature	-20~65'C (-68~149'F)
Timing protection (for optional)	Ensure the motor reliable and durable, for 24VAC only
Proportional input signal	0(2)~10V or 0(4)~20mA DC

Model	Type	Size	Kvs/Cvs	Full stroke time (Second)	Closing-off pressure (Mpa/psi)
SR13G21520A(B)4	2-way	G1/2″/ 15mm	2.0/2.3	55	0.3/44
SR13G21532A(B)4	2-way	G1/2″/ 15mm	3.2/3.7	55	0.3/44
SR13G31532A(B)4	3-way	G1/2″/ 15mm	3.2/3.7	60	0.3/44
SR13G22032A(B)4	2-way	G3/4″/ 20mm	3.2/3.7	55	0.3/44
SR13G22046A(B)4	2-way	G3/4″/ 20mm	4.6/5.4	55	0.3/44
SR13G32046A(B)4	3-way	G3/4″/ 20mm	4.6/5.4	60	0.3/44
SR13G22557A(B)4	2-way	G1″/ 25mm	5.7/6.7	60	0.3/44
SR13G22568A(B)4	2-way	G1″/ 25mm	6.8/8.0	60	0.3/44
SR13G32557A(B)4	3-way	G1″/ 25mm	5.7/6.7	65	0.3/44
SR13G232A0A(B)4	2-way	G11/4″/ 32mm	10.0/12	80	0.3/44
SR13G33284A(B)4	3-way	G11/4″/ 32mm	8.4/9.8	105	0.3/44

Note: With built-in PCB to do as a modulating valve, add “-E” behind the model, for example: SR13G21520A1-E, there is only 24VAC (A1) power supply provided.