| VALQUA No. |
Name / Description |
Application |
Size |
| (3DW) |
Dynamic Bellows
Metal welded bellows consisting of sheet metals molded into a
ring of S or Y-shaped cross-section and welded at the inside and
outside diameters. |
Used in stem seals
for various types of valves, vacuum drive seals in semiconductor
production equipment, expansion pipe joints for vacuum sealing
of accelerators and nuclear fusion equipment and mechanical seals
for oil control and pulsation dampening due to its flexible stretchability
and spring constant.
Pressure range :
extremely high vacuum to 49MPa {500kgf/cm2} |
Manufacturing
range :
| Inside diameter: |
 |
3-1,000mm dia. (2,000mm sq.) |
| Thickness: |
|
0.03-1.0mm |
| Configuration: |
|
circle, ellipse, square |
| Number of folds: |
|
optional |
| Material: |
|
SUS (304, 304L, 316, 316L, 321, 347), AM-350,
Inconel, hastelloy, titanium, Monel and others |
|
| (3DW) |
Dynamic Bellows
(V Series)
Standard metal welded bellows consisting of desired number of
blocks with a free length of 10 mm to ensure ease of use depending
on the required amount of expansion. |
Used in a variety
of equipment based on a combination of standard size and number
of blocks.
Pressure range :
Differential pressure 0.098MPa {1kgf/cm2} |
Manufacturing
range :
Inside diameter: 8-210mm dia.
Standard material :
SUS304 (Substandard SUS316L) |
| (3DW) |
Dynamic Bellows
(M Series)
Metal welded bellows that have been developed using structural
analysis technology and offer a long service life at a low cost. |
Used in drive seals
for vacuum equipment, semiconductor production equipment and bellows
cylinders, bellows pumps and manipulators. |
Standard dimension
:
Inside diameter: 8-50mm dia.
Standard material :
SUS316L |
| (3DU) |
Dynamic Bellows
Pump
Pneumatic carrier pump using dynamic bellows. The bellows construction
excludes minglement of oil or carbon and ensures supply of pure
gas without altering gas properties. |
Used in biological
instrument, analyzers for monitoring air pollution, nuclear equipment,
medical equipment, emission analyzers for automobiles, vacuum
equipment, high-purity gas circulation systems and analyzers. |
Standard models
:
VP-016 (16 l/min)
VP-040 (40 l/min) |
