Products

New Products

Bellows Valve Series

TK-FUJIKIN Bellows Valves are available in variety of models for system versatility and designed to meet UHP system requirements.
Major features of bellows valve offers a long life cycle, excellent purification and minimum particle generation, due to stem support that is located in the outer part, preventing the fiction between the components.
TK-FUJIKIN can provide 4 different types based on the product configuration,
such as Miniature, Forged, Casting and Y-Type bellows valve.

Low Pressure Full Flow Manual Bellows Valve (YBV)

■ Y type.
■ Achieved large Cv value.
■ Inner surface has uniform surface roughness.
■ The valve seat is designed to produce less dust and gas residue. 
002-Low Pressure Full Flow Manual Bellows Valve (Y TYPE).gif
Major Specifications
Size 1/2″ 3/4″ 1″
Cv Value 17 23 38
Max. Working Pressure (G.) 1MPa
Max. Working Temp. -10℃ ~ 80℃
Internal Leakage Allowance (He)
Test Pressure ≤ 1×10-2 Torr
Holding Time ≥ 15 sec.
4x10-6Pa · m3/s 1x10-6Pa · m3/s
External Leakage Allowance (He)
Test Pressure ≤ 1×10-2 Torr
Holding Time ≥ 1 min.
4x10-6Pa · m3/s 1x10-6Pa · m3/s
Particle Inspection (EP only)
Pressure : 60~80psi N2 Gas
Sample Volume : 1CFM
0.1㎛ and Larger
No count No count
Product Grade
GRADE AP BA EP
Inner
Surface
Roughness
Ry ≤ 25㎛
Cut off Length : 2.5mm
Measuring Length : 12.5mm
Ry ≤ 3.0㎛
10 μinch Ra(Avg.)
Cut off Length : 0.8mm
Measuring Length : 4mm
Ry ≤ 0.7㎛
5 μinch Ra(Avg.)
Cut off Length : 0.25mm
Measuring Length : 1.25mm
Polishing Machining Finish Machining Finish Electro Polishing Finish
Material
NO. NAME MATERIAL
1 Body 316L Stainless Steel
304 Stainless Steel
2 Disk PCTFE / PTFE
3 Bellows Stainless Steel 316L
4 Handle ALUMINUM
Ordering Number
MATERIAL SIZE CONNECTION GRADE
S 316L Stainless Steel T8 1/2″ TW Butt Weld AP AP Grade
4S 304 Stainless Steel T12 3/4" - - BLANK BA Grade
- - T16 1″ - - P EP Grade

MODEL CONNECTION SIZE A B C D
Butt Weld 1/2″ 180 8.4 109 52
3/4″ 200 11.5 127 59
Butt Weld 1″ 257 17.7 187 65