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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 - 32A ~ 50A (APBV)

■ Cast steel valves suitable for works demanding strength, shock resistance, elongation and heat resistance.
■ The valve seat is designed to produce less dust and gas residue. 
003-Low Pressure Pneumatic Bellows Valve - 32A ~ 50A (CASTING A TYPE).gif
Major Specifications
Size 32A 40A 2″ 50A
Cv Value 16 16 16 21
Orifice Size 40mm 40mm 40mm 50mm
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 SCS16, 316L Stainless Steel
SCS13, 304 Stainless Steel
2 Disk PTFE
3 Bellows Stainless Steel 316L
4 Actuator ALUMINUM
Ordering Number
MATERIAL SIZE CONNECTION OPERATION METHOD GRADE
S SCS16,
316L Stainless Steel
32 32A TW Butt Weld C Normally Close AP AP Grade
4S SCS13,
304 Stainless Steel
40 40A FL Flange(JIS 10K) O Normally Open BLANK BA Grade
- - T32 2″ - - - - P EP Grade
- - 50 50A - - - - - -

MODEL CONNECTION SIZE A B C D
Butt Weld 32A 270 51 309 188
40A 270 51 309 188
2″ 270 51 309 188
50A 295 57 350 188
MODEL CONNECTION SIZE A B C D E F G N-H
Flange 32A 165 67.5 309 188 135 100 76 4-Ø19
40A 165 70.0 309 188 140 105 81 4-Ø19
2″ 165 70.0 309 188 140 105 81 4-Ø19
50A 203 77.5 350 188 155 120 96 4-Ø19