Vacuum Valves with Bellows
  • Range: 1×10⁻⁷ PA - 1×1.2×10⁵ PA
  • Cycles Until First Service: 200,000 Times
  • Transport Package: Carton
  • Origin: China
  • Leak Rate: 1.3×10⁻⁷ PA L/S
  • Trademark: cbvac
  • Specification: Stainless steel / Aluminum
  • HS Code: 8481804090

                 Vacuum Valves with Bellows 


Vacuum Valves with Bellows
  1. Brief Introduction
This series of valves is suitable for the start and stop of ultra-high vacuum systems in vacuum lines. They are two types of vacuum block valves: manual and pneumatic. These valves offer several advantages such as stability, durability, excellent sealing, and a long service life, making them a preferred choice for initial use in ultra-high vacuum equipment. Manual valves operate using a handwheel, while pneumatic valves use compressed air. When the air supply is lost, the valve plates close automatically due to spring force. The applicable media include pure air and non-corrosive gases.
  1. Features
  1. Designed in a standard and modular way, easy to change and maintain.
  2. Easy to clean.
  3. Utilizes stainless steel bellows and Viton O-rings, no lubrication required.
  4. The inner body of the valve is welded with stainless steel, resulting in a low leak rate.
  1. Order Information
The order numbers for each product are listed below. Customers can search based on the operation mode of the valves and DN.
Order Example: 2089
High Vacuum Manual Block Straight Valves, DN=16mm, CF flange
DN (mm) Order No. Weight (kg)
Manual Pneumatic Manual Pneumatic
16 2089 2297 0.50 0.70
25 2090 2298 1.80 1.70
40 2091 2299 2.20 2.10
50 2092 2300 2.70 3.55
  1. Major Capacity Targets:
  1. Application scope:1×10⁻⁶ Pa~1.2×10⁵ Pa
  2. Differential pressure before open valve plates: ≤1.2×10⁵ Pa in any direction
  3. Leak rate of valves’ body and base: <1.3×10⁻⁷ Pa·L·s⁻¹
  4. Cycling numbers before initial repair: 200,000 times
  5. Baking temperature of valve bodies: Open ≤200°C; Close ≤150°C
  6. Installation position: Any direction
  7. Power supply: AC 220V 50Hz, 6W or DC 24V, 3W (Cycles until first service)
  8. Compressed air (only for pneumatic valves): 0.4~0.7 MPa
  9. Speed of closing and opening (only for pneumatic valves): ≤1s
  10. Indications of valves’ position
- Manual valves: with indication of start and stop positions
- Pneumatic valves: with indication of start and stop positions (magnet switch)
  1. Valves’ weight: Referring to the above table.
  1. External Dimensions
  1. Manual
            
Model DN Connecting flange Manual
A B C D E F G
CD-J16B 16 CF16 106 16 40 48 64 40 28
CD-J25B 25 CF25 137 25 55 69 89.5 50 40
CD-J40B 40 CF35 153 35 63 69 97.5 63 40
CD-J50B 50 CF50 192 50 80 92 126 63 40
  Pneumatic 
 
Model		 DN Connecting flange Pneumatic
A B C D E F G
CDQ-J16B 16 CF16 125 16 40 48 85 113 28
CDQ-J25B 25 CF25 149 25 55 69 111 140 40
CDQ-J40B 40 CF35 167 35 63 69 118 150 40
CDQ-J50B 50 CF50 207 50 80 92 144 210 50
 
 
CF flanges comply with GB/T 6071-2003
Optional Parts: Magnet switch.

We can OEM and ODM as per your drawings and requirements
Vacuum Valves with Bellows

Packaging & Delivery

Packaging Details: Inner: plastic bag. Outer: carton or wooden case or according to customers' needs.
Delivery Detail: Shipped within 3 days after payment

Our Company Introduction

Chuanbei Vacuum Technology (Beijing) Co., Ltd. (Registered Brand CBVAC), established in 2002, is a national high-tech enterprise and a key member of the Chinese Vacuum Association. Specializing in the development, design, production, sales, and service of vacuum products, we have undertaken major projects from MOST, the intelligent digital workshop from NDRC, and technology upgrades from MIIT.

CBVAC offers various series of vacuum valves, vacuum pumps, vacuum bellows, vacuum flange connectors, and custom chamber processing, along with vacuum system integration and other vacuum products. Our industry belongs to high-end equipment manufacturing. Vacuum products and technologies are widely used in new energy, new materials, aerospace, semiconductors, IC equipment, and other fields. We also

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August 23, 2025