Water valve- DHD21 pilot diaphragm structure
Characteristic: 1.Pilot operated diaphragm construction with less power consumption for longtime working;
2. Applied to pressure system opened from 0.3 bars;
3. Lifespan can be at 1 million cycles.
Medium: Water, air, gas, etc.
Temperature: NBR Seal: 14F to 176F, -10 to 80
EPDM Seal: 14F to 250F, -10 to 120
VITON Seal: 14F to 300F, -10 to 150
Pressure: DHD21: 0.3 ~ 10 bar
Port Size: 3/8", 1/2", 3/4", 1", 1 1/4", 1 1/2", 2"
Port Thread: BSPP, BSPT, NPT, Flange, UNF, M8X1
Orifice (mm): 12, 15, 20, 25, 32, 40, 50
Voltage: DC - 12V, 24V
AC - 24V, 120V, 240V/60HZ; 110V, 220V/50HZ
Tolerance: +/- 10%
Coils: S91B/H, 17VA (AC), 10W (DC), IP65, 100%ED
Special coils: EX coil AC 220 V, DC 24 V;
Latching coil. DC 6 ~ 12 V on request)
Equivalent code DHL21 series
NASS COIL 0543 is suitable for DHD21
Material: Stainless steel/BRASS
Seal -NBR, EPDM, or VITON
Armature Tube - Stainless Steel 304
Plunger - Stainless Steel 430F
Stop -Stainless Steel 430F
Springs - SS 304
Shading Rings - Stainless Steel 304
DHD21 Series Normally Closed, with Coil S91B, DIN
Port Size
|
Orifice
|
Cv
|
Min Pressure(bar)
|
Max Pressure(bar)
|
Valve Body
|
Coil
|
AC(22VA)
|
DC(14W)
|
3/8"
|
12
|
4.5
|
0. 3
|
10
|
10
|
DHD2112 X X X
|
S21B/H
|
1/2"
|
15
|
4.5
|
0. 3
|
10
|
10
|
DHD2115 X X X
|
S21B/H
|
3/4"
|
20
|
9.3
|
0. 3
|
10
|
10
|
DHD2120 X X X
|
S21B/H
|
1"
|
25
|
12
|
0. 3
|
10
|
10
|
DHD2125 X X X
|
S21B/H
|
1 1/4"
|
32
|
24
|
0. 3
|
10
|
10
|
DHD2132 X X X
|
S21B/H
|
1 1/2"
|
40
|
29
|
0. 3
|
10
|
10
|
DHD2140 X X X
|
S21B/H
|
2"
|
50
|
48
|
0. 3
|
10
|
10
|
DHD2150 X X X
|
S21B/H
|
F2 1/2"
|
65
|
68
|
0. 3
|
10
|
10
|
DHD2165 X X X
|
S21B/H
|
F3"
|
80
|
100
|
0. 3
|
10
|
10
|
DHD2180 X X X
|
S21B/H
|
F4"
|
100
|
175
|
0. 3
|
10
|
10
|
DHD21100 X X X
|
S21B/H
|
F5"
|
125
|
200
|
0. 3
|
10
|
10
|
DHD21125X X X
|
S21B/H
|
F6"
|
150
|
250
|
0. 3
|
10
|
10
|
DHD21150X X X
|
S21B/H
|