Products

New Products

Check Valve Series

A check valve is a mechanical device which normally
allows fluid (Liquid or Gas) to flow in only one direction and prevents back flow.
TK-FUJIKIN can provide two different types with pan spring & coil spring and
customers prefer globally due to excellent performance and
optimum cracking & reseal pressure.

Check Valve (CHV1)

■ Using SUS316L as a material , corrosion resistance is improved.
■ All-welded design provides reliable containment of system fluid.
■ Conserves panel space.
■ Noise free operations.
■ Cleanroom assembled and packaged. 
check_valve.gif
Major Specifications
Size 1/4″ 3/8″, 1/2″
Cv Value 0.55 0.7
Max. Working Pressure (G.) 20.6MPa
Nominal Reseal Pressure (G.) 27.6KPa
Nominal Cracking Pressure (G.) 13.8KPa
Max. Working Temp. -10℃ ~ 80℃
External Leakage Allowance (He)
Test Pressure ≤ 1×10-2 Torr
Holding Time ≥ 1 min.
1x1010Pa · 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
316L Stainless Steel Remelted
2 Seal Ring FPM / NEOPRENE /E
3 Spring HASTELLOY C-22
Ordering Number
MATERIAL SIZE CONNECTION GRADE
S 316L Stainless Steel 4 1/4″ TW Butt Weld AP AP Grade
D 316L Stainless Steel Remelted 8 1/2″ - - BLANK BA Grade
- - - - - - P EP Grade

MODEL CONNECTION SIZE A B
  MFS Male 1/4″ 45.8 22
1/2″ 52.3 27