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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 Pneumatic Bellows Valve (APBV)

■ Forged body reduced the total weight.
■ The valve seat is designed to produce less dust and gas residue. 
006-Low Pressure Pneumatic Bellows Valve (FORGED A TYPE).gif
Major Specifications
Size 15A 1″ 20A 25A
Cv Value 2.9 4.1 4.1 6.9
Orifice Size 15mm 19mm 19mm 25mm
Max. Working Pressure (G.) 1MPa
Operating Pressure (G.) 0.4 ~ 0.7MPa
Max. Working Temp. -10℃ ~ 80℃
Internal Leakage Allowance (He)
Test Pressure ≤ 1×10-2 Torr
Holding Time ≥ 15 sec.
1x10-6Pa · m3/s
External Leakage Allowance (He)
Test Pressure ≤ 1×10-2 Torr
Holding Time ≥ 1 min.
1x10-6Pa · m3/s
Particle Inspection (EP only)
Pressure : 60~80psi N2 Gas
Sample Volume : 1CFM
0.1㎛ and Larger
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
3 Bellows Stainless Steel 316L
4 Actuator ALUMINUM
Ordering Number
MATERIAL SIZE CONNECTION OPERATION METHOD GRADE
S 316L Stainless Steel 15 15A TW Butt Weld C Normally Close AP AP Grade
4S 304 Stainless Steel T16 1″ FL Flange(JIS 10K) O Normally Open BLANK BA Grade
- - 20 20A - - - - P EP Grade
- - 25 25A - - - - - -

MODEL CONNECTION SIZE A B C D E
Butt Weld 15A 190 24 204 110 30
1″ 200 28 215 135 35
20A 200 28 215 135 35
25A 210 33 226 135 40

MODEL CONNECTION SIZE A B C D E F G N-H
Flange 15A 108 47.5 228 110 95 70 51 4-Ø15
1″ 117 50 237 135 100 75 56 4-Ø15
20A 117 50 237 135 100 75 56 4-Ø15
25A 127 62.5 256 135 125 90 67 4-Ø19