ISO Flanges / Flange Check Valve / Screw End Check Valve

August 24, 2025

ISO Flanges / Flange Check Valve / Screw End Check Valve
ISO Flanges / Flange Check Valve / Screw End Check Valve 

  1. Brief Introduction
This series of valves is suitable for the start and stop of ultra-high vacuum systems. They are two types of vacuum block valves: manual and pneumatic. These valves offer many advantages such as stability, durability, excellent sealing, and long service life, making them a preferred choice 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 closes automatically due to spring force. The valves can handle pure air and non-corrosive gases.                               
  1. Features
  1. Designed in a standard and modular way, making it easy to replace and maintain.
  2. Easy to clean and maintain.
  3. Equipped with stainless steel bellows and Viton O-rings, no lubrication required.
  4. The internal body of the valve is welded with stainless steel, ensuring low leakage rate.
  1. Order Information
Each product has specific order numbers that customers can refer to based on the operation mode and DN size. For example, 2089 refers to a High Vacuum Manual Block Straight Valve with DN=16mm and CF flange. Below is the detailed order number table:
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 range: 1×10⁻⁶ Pa to 1.2×10⁵ Pa
  2. Differential pressure before opening: ≤1.2×10⁵ Pa in any direction
  3. Leak rate of valve body and base: < 1.3×10⁻⁷ Pa·L/s
  4. Cycles until first service: 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 (for 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. Valve position indication
- Manual valves: Indication of open and closed positions
- Pneumatic valves: Indication of open and closed positions (with magnet switch)
  1. Valve weight: Refer 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 provide OEM and ODM services based on your drawings and requirements
ISO Flanges / Flange Check Valve / Screw End Check Valve

Packaging & Delivery

Packaging Details: Inner: plastic bag. Outer: carton or wooden case or according to customer's request.
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. It specializes in the development, design, production, sales, and service of vacuum products. The company has 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 customized chamber processing, along with vacuum system integration and other vacuum products. These products are widely used in fields such as new energy, new materials, aerospace, semiconductors, and IC equipment. We also design and manufacture products for universities and research institutions in the field of vacuum technology applications.

Our Product Range
ISO Flanges / Flange Check Valve / Screw End Check Valve
 

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