Functional Features:
The DYC-Q series vacuum electromagnetic differential pressure charging valve is installed on the mechanical vacuum pump to prevent pump backflow and avoid contamination of the vacuum system by pump oil. This valve is connected to the pump on the same power supply. When the electromagnetic valve is closed or suddenly loses power, the valve automatically closes the vacuum system using the atmospheric pressure difference and fills the pump chamber with atmospheric air. When powered on, the pilot valve cuts off the atmosphere, and the vacuum pump draws air, and the valve plate automatically opens, allowing the vacuum system to operate normally. The applicable working medium is air and non-corrosive gases.
| Item |
Parameter |
| Application Range (Pa) |
105∼10−3 |
| Valve Leakage Rate (Pa·L/s) |
≤6.5×10−3 |
| Medium Temperature (℃) |
−25∼+80 |
| Opening/Closing Time (s) |
≤3 |
| Power Supply (V/Hz) |
220/50 |
| Installation Method |
Vertical |
| Part Name |
Material |
| Valve Body |
Carbon Steel with Nickel Plating |
| Seal |
Nitrile Butadiene Rubber (NBR) |
| Model |
Nominal Diameter (DN) |
ΦD (Valve Outer Diameter) |
ΦB (Flange Outer Diameter) |
H₁ (Flange Inner Diameter) |
H₂ (Valve Total Height) |
L (Valve Axial Length) |
Flange Standard |
| DYC-Q16/KF |
16 |
60 |
30 |
17.2 |
115 |
72 |
GB 4982 |
| DYC-Q25/KF |
25 |
70 |
40 |
26.2 |
130 |
76 |
GB 4982 |
| DYC-Q40/KF |
40 |
100 |
55 |
41.2 |
160 |
90 |
GB 4982 |
| DYC-Q50/KF |
50 |
110 |
75 |
52.2 |
195 |
95 |
/ |
| Model |
Nominal Diameter (DN) |
ΦD (Flange Outer Diameter) |
ΦB (Flange Sealing Face Diameter) |
H (Valve Total Height) |
Mounting Holes |
Flange Standard |
| DYC-Q16 |
15 |
60 |
45 |
75 |
4-M6 |
GB 6070 |
| DYC-Q20 |
20 |
65 |
50 |
80 |
4-M6 |
GB 6070 |
| DYC-Q25 |
25 |
70 |
55 |
90 |
4-M6 |
GB 6070 |
| DYC-Q32 |
32 |
90 |
70 |
100 |
4-M8 |
GB 6070 |
| DYC-Q40 |
40 |
100 |
80 |
110 |
4-M8 |
GB 6070 |
| DYC-Q50 |
50 |
110 |
90 |
123 |
4-M8 |
GB 6070 |
| DYC-Q63 |
65 |
125 |
105 |
147 |
4-M8 |
GB 6070 |
| DYC-Q80 |
80 |
145 |
125 |
147 |
4-M8 |
GB 6070 |
| DYC-Q100 |
100 |
165 |
145 |
165 |
8-M8 |
GB 6070 |
| DYC-Q125 |
125 |
200 |
175 |
185 |
8-M10 |
GB 6070 |
| DYC-Q150 |
150 |
220 |
195 |
211 |
8-M10 |
GB 6070 |
| DYC-Q160 |
160 |
225 |
200 |
211 |
8-M10 |
GB 6070 |
| DYC-Q200 |
200 |
285 |
260 |
240 |
12-M10 |
GB 6070 |
| DYC-Q250 |
250 |
335 |
310 |
285 |
12-M10 |
GB 6070 |
| DYC-Q300 |
300 |
425 |
395 |
310 |
12-M10 |
GB 6070 |
