Rotary Piston Vacuum Pump Gas Ballast Valve

August 12, 2025

Model NO.: DDCY-65Q
Power Supply: DC Solenoid Valve
Usage: Safety
Standard: BSW
Application: Industrial Usage
Leak Rate(PA .L/S): <6.7X10-2
Open&Close Time(S): <3
Power(W): 14
Supply: -220V 50Hz
Weight(Kg): 5
Valve Body: Carbon Steel
Seal: Rubber
Trademark: DVE
Transport Package: Neutral Wood Box
Specification: Spare Parts Of High Level
Origin: Zhejiang, China
HS Code: 8414100000

DESCRIPTIONS
The DDCY-Q series vacuum pressure solenoid valve is installed on a dedicated mechanical vacuum pump. It is placed at the inlet of the mechanical vacuum pump and synchronizes the opening and closing of the pump.

When the pump stops working or the power supply is suddenly interrupted, the valve can automatically close due to atmospheric pressure and the vacuum valve plate, maintaining the vacuum in the system. Air fills through the orifice valve into the pump chamber to prevent contamination of the vacuum pump oil from the reverse flow system.
Rotary Piston Vacuum Pump Gas Ballast Valve
SPECIFICATIONS
MODEL DN(mm) SIZE(mm) SPECIFICATION MATERIAL
D D1 H n-d LEAK RATE(Pa .L/s) OPEN&CLOSE TIME(s) POWER(w) SUPPLY WEIGHT(kg) VALVE BODY SEAL
DDCY-20Q 20 65 50 50 4-M6 <6.7X10-2 <3 14 -220V 50Hz 1.3 CARBON STEEL RUBBER
DDCY-25Q 25 70 55 85 1.5
DDCY-32Q 32 78 64 95 2
DDCY-40Q 40 85 70 95 3
DDCY-50Q 50 110 90 100 4-M8 3.5
DDCY-65Q 65 125 105 110 5
DDCY-80Q 80 145 125 120 6.5
DDCY-100Q 100 170 145 140 8-M10 10
DDCY-125Q 125 195 170 165 15
DDCY-150Q 150 220 195 190 20
DDCY-200Q 200 275 250 240 12-M10 30
Applicable working medium: air and non-corrosive gases.

Note: The upper flange has a sealing groove, the lower flange does not have a sealing groove.
STM DESCRIPTION QTY REMARK
4 BELT 5 *
13 O-RING 2 *
14 SHAFT SEAL 2 *
14A SHAFT SEAL 3 *
16 LONG SHAFT SLEEVE 1 *
17 O-RING 5 *
18 BEARING 2 **
21 GAS BALLAST VALVE 1 *
25 SHORT SHAFT SLEEVE 2 *
29 O-RING 1 *
32 KEY 2 **
34 KEY 1 **
35 KEY 2 **
45 VACUUM RESERVOIR OIL VALVE 1 **
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