24VDC water solenoid valve/zero pressure start solenoid valve

Model

2W31

Characteristic

1.Direct lifting diaphragm construction 
2.Open from zero bar for low pressure system use
3.High frequency of DIN plug coil

Working Medium

 Water, air,city gas,oil,Petroleu etc.

Type

Normally closed type

Operating Temperture

NBR Seal: 14F to 176F, -10~80°C
EPDM Seal:  14F to 250F,-10~120°C
VITON Seal : 14F to 300F, -10~150°C

Port Size

3/8,1/2,3/4,1,1 1/4,1 1/2,2

Port Thread

  BSPP ,BSPT ,NPT ,Flange, UNF

Orifice (mm)

  12,15,20,25

Voltage

DC - 12V,24V
AC - 24V,120V, 240V@60HZ 110V,220V@50HZ

Tolerance

-10%~+10%

Working-pressure

0~1.0Mpa

Coils

  S91B, 17VA(AC), 10W(DC), IP65,100%ED
                         NASS COIL 0543 on request
Special coils:     Latching coil. DC 6 ~ 12 V

Material

Body:Brass or Stainless steel
Seal:NBR,EPDM,PTFE or VITON
Armature Tube:Stainless Steel 304
Plunger:Stainless Steel 430F
Stop:SS430F
Springs:SS304
Shading Rings:Stainless Steel 304 

Port

Size

Orifice

Cv

Min Pressure

Max Pressure

Seals
Material

Body 
Material

Valve Body

Coil

AC(17VA)

DC(10W)

3/8"

12

4.5

0. 0MPa

1. 0MPa

1. 0MPa

EPDM,PTFE,
VITON,

Brass, or
Stainless Steel

2W3112 X X X

S91B

1/2"

15

4.5

0. 0MPa

1. 0MPa

1. 0MPa

2W3115 X X X

S91B

3/4"

20

9.3

0. 0MPa

1. 0MPa

1. 0MPa

2W3120 X X X

S91B