1021 Diaphragm Valve for Medical/Laboratory/ Instruments Application

• Media: Water, Air and Some of Organic Solvents
• Temperature: Ordinary Temperature
• Actuator: Electric
• Connection Form: Threaded, Barbed
• Type: Direct Acting
• Material: PPS/PVDF/POM Body, EPDM/FKM/Ffkm Membrane
• Model NO.: 1021-22-EHN/5N
• Pressure: -70 Kpa ~ 0.3 MPa
• Valve Structure: Direct Action Diaphragm Structure
• Power Supply: DC Solenoid Valve
• Usage: Flow Control
• Standard: GB
• Application: Industrial Usage, Water Industrial Usage, Medical Device Usage
• Size: 20.5*42.5*58.2 mm
• Voltage: 24V
• Power: 4.2W
• Orifice: 2mm
• Transport Package: Bulk Package
• Specification: CE, RoHS
• Trademark: Keyto
• Origin: China
• HS Code: 8481804090
• Production Capacity: 1000, 000 PCS/Year

Product Description

1 .Production Overview
The solenoid valve of 1021-2 way series is a family of diaphragm valve with 2mm orifice
diameter, controlling the on/off of fluid flow path. This series solenoid valve is a high
performance, low cost and maintenance free diaphragm valve with multiple model options,
which are suitable for different reagents under different working conditions. Its life cycle
can be operated more than 3 million.

1.1 Characteristics Of 1021-2 Series
Orifice diameter: 2mm; low resistance;
 Large flow: Cv≥0.05; flow≥8.5mL/s (pressure drop 50KPa, 25ºC, pure water)
Small dead volume: zero dead volume inside the solenoid valve.
Multiple option for wetted material:
1. Body Material:POM,PVDF,PTFE.
2. Seal Material:EPDM,FKM, FFKM.
Long lifetime, high performance.

Respomse Time(T)

Input air/water at 0.25MPa and maximum working pressure drop from inlet port, input rated control electrical signal to make the tested solenoid valve open and close, then we'll get the change of outlet pressure which we can measure from pressure sensor. At the same time,
we'll get the lapse of time which starts from power on/off to rise to 90% of max pressure (normally closed valve) and drop to 10% of max pressure (normally open valve) by quick response time measure devise. Repeatedly test several times and take the average value as the power on response time and the power off response time.
As engineering experience, it is the design critical value that response time above 50ms. The aspiration of valve may not stable. Therefore, the response time is not beyond 50ms within nominal lifetime.
In addition, there is a response time at current method in this industry. The change of circuit leads to current change, according to the action of solenoid valve. The response time T1, T2 at current method is normally less than the response time(T) which measured by air flow method.
 

Seal Capability

Pressure strengthen (outside leakage).

1. Solenoid valve powers on, the outlet is close, and the inlet water under condition of 5ºC~40ºC and 1.5 times of nominal pressure. Then ensure all connector won't leak within 1min.
2. Sealing(inside leakage).

For two normally closed branches, give one port pressures; put the other port into
water. Under the nominal pressure, there is no bubble come out in 1min.


Specification: 

Structure	Direct acting poppet type
Type	2/3-way
No.Of Ports	2
Orifice Diameter	2.0mm
Coefficient Of Variation (CV)	0.05
Mediums	Water, air, diluent, cleaning fluid, weak acid, weak base.
Operating Temperature	5ºC~50ºC
Operating Pressure(in - out)	-70kpa~0.3Mpa
Leakage Rate	0
Response Time	<30ms
Dead Volume	0
Voltage Tolerance	DC12V,24V
Fluctuation Of Voltage	From-10% to+10%
Power Consumption	4.2W
Type of coil insulation	B
Wight	80g

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