A20-S Brass Ball Structure and Water Media Auto Drain Valve with Timer

Auto drain & Water cooling system
Electric brewing system
Heating & Cooling HAVC system
Water cooling bleed system
Rain water harvesting
Solar heating,undefloor heating
Irrigation system
Leak detection & water shut off system
Water saving system
And some other automatic control system.....

Online Service

Tel:86-576-84297288 81100233

Email: tonhe@139.com

Fax: 86-576-81100232


Technical Parameters

Product size

NPT/BSP 1/4" 3/8" 1/2"  3/4''   1" (Optional )

Maximum working pressure

1.0 MPa

Circulation medium

Fluid, air

Valve open /closed time

≤ 7S

Working Voltage

AC/DC9-24V  AC110-230V(Optional )

Keeping valve open time


Keeping valve closed time


Working current


Stall current setting


Life time

70000 times

Valve Body material


Actuator material


Sealing material


Actuator rotation


Max. torque force


Cable Length


Environment temperature


Liquid temperature


Manual override


Open/close Indicator 


Protection Class


Assemble Drawing 

Product Picture

Design Features


1 All-copper gear design, high accuracy output torque, especially for multi-channel scaling system. 

2 Small size, compact structure.
3 A variety of control methods, either to accept remote valve position control signal, but also the feedback signal in place for computer intelligence unit testing.
4 Good sealing performance





1 IC card water meter, heat meter.
2 Air-conditioning fan coil, fire sprinkler.
3 Solar energy drain valve, high efficiency water-saving.
4 Automatic control systems, university water system, small-scale industrial automation  equipment,  environmental protection







When you inquiry the valve, pls confirm the detail  technical data :

1, valve size , materail 

2, working voltage

3, wire control 

4,valve manual override & indicator ( yes or no)

5, actuator cable length


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A20-S Brass Ball Structure and Water Media Auto Drain Valve with Timer

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