Gate Valve , Pneumatic Drive , CCQ-200A DN200 , 1E+5 to 1E-7 Pa
The valve utilizes screw (manual and electric) or cylinder rod
(pneumatic) drive to push (pull) link mechanism under the axial
movement of seal shaft, thus to drive valve spool assembly to do
axial movement.New type (A-type) ultrahigh vacuum gate valve series
are ultra-thin type gate valves developed based on original
old-type gate valves, which are applicable for ultrahigh vacuum.
External surface of valve adopts silver gray matte finishing. It
looks high-grade and generous. Main parts and components such as
valve body and valve plate are made from 304 stainless steel with
very low air bleeding amount, and drive component which realizes
movement of valve body adopts 316L stainless steel welded bellows.
Imported fluorine rubber gasket with very low air bleeding amount
is used for sealing of valve plate.
Applications:
The series ultrahigh vacuum gate valve is one of important elements
of Ultrahigh vacuum system, which can be used as a switching
mechanism of Ultrahigh vacuum line.
The series Ultrahigh vacuum gate valve is applicable for the
occasions with air and non-corrosive gas as working media.
Advantages:
1. Good tightness and ultra-low air bleeding rate
2. Stable motion, small noise and vibration
3. asy installation and compact structure
4. Elegant appearance
Specifications:
| Model | CCQ-200A |
| Flange | ISO-K/ F, CF |
| nominal Diameter | DN200 |
(Pa)
range of application | 105 —10-7 |
Leakage rate(Pa▪m3/ s
) | ≤1.3×10-10 |
| Drive mode | Pneumatic |
| (MPa)Working pressure | 0.4～0.5 |
| Valve In-place Indication | Magnetic |
| (℃)Baking temperature | on | 150 |
| off | 120 |
| Mounting position | Any |
Structure features
1. Stainless steel whole internal welding valve body, with good
sealing, small volume, light weight and elegant appearance.
2. Valve spool assembly has simple structure, less welding parts,
simple welding process, convenient assembly and debugging, and
dual-rail roller bearing mechanism is used for its axial movement,
with stable movement and high steering accuracy.
3. Seal plate and support plate adopt whole plate structure, and
have even support force distribution and good rigidity.
4. When the valve is opened, the support steel ball is located at
steel ball sleeve hole and steel ball groove of seal plate and
support plate; when the valve is closed, the steel ball will be
pushed out from the groove and located at the plane of seal plate
and support plate, playing a role of splitting and supporting.
5. Drive mechanism adopts planar linkage mechanism, with simple
structure, large bearing capacity and high action stability.
Cylinder (or handle) is located at axle wire of valve.
6. Drive shaft (link) is sealed with 316L stainless steel welded
bellow, with good sealing performance, and can be installed at any
position.
7. The user can select manual, pneumatic or electric mode as
required. Manual valve has simple structure, which operates easily
and flexibly; and pneumatic and electric valve are suitable for
automatic control.
8. The series gate valve have three connection methods in vacuum
system: CF flange sealed with copper washer and ISO-F and ISO-K
flanges sealed with fluorine rubber ring.
9. Overall dimensions and main connection dimensions of the series
gate valve:
