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High Pressure manual Diaphragm Valve(STD TYPE)

FEATURES
■ Highly resistant to corrosion using nickel-cobalt alloy diaphragm.
■ Minimal particle generation.
■ Permanently heat code laser marked; material traceable to original mill
certificate of test.
■ Electropolished, D.I. water cleaned, assembled, tested and packed in a
certified clean room. 
High Pressure manual Diaphragm Valve.gif  
MAJOR SPECIFICATIONSS
Size 1/4″ 1/2″
Cv Value 0.29 0.7
Orifice Size 4.4mm 7mm
Max. Working Pressure (G.) 20.6MPa
Max. Working Temp. PCTFE : -40°C ~ 71°C PCTFE : -40°C ~ 65°C
Internal Leakage Allowance (He) 1x10-10 Pa · m3/s
Test Pressure ≤ 1×10-2 Torr
Holding Time ≥ 30 sec.
External Leakage Allowance (He) 1x10-10 Pa · m3/s
Test Pressure ≤ 1×10-2 Torr
Holding Time ≥ 1 min.
Particle Inspection (EP only) No count
Pressure : 60~80psi N2 Gas
Sample Volume : 1CFM
0.1µm and Larger
PRODUCT GRADE
GRADE AP BA EP
Inner
Surface
Roughness
Ry ≤ 25µm
Cut off Length : 2.5mm
Measuring Length : 12.5mm
Ry ≤ 3.0µm
10 µinch Ra(Avg.)
Cut off Length : 0.8mm
Measuring Length : 4mm
Ry ≤ 0.7µm
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 VAR
304 Stainless Steel
2 Seat PCTFE
3 Diaphragm Ni-Co Alloy
4 Handle Aluminum
ORDERING INFORMATION
MATERIAL SIZE CONNECTION GRADE
S 316L Stainless Steel 4 1/4″ VM MFS Male AP AP Grade
D 316L Stainless Steel VAR 8 1/2" VF MFS Female BLANK BA Grade
4S 304 Stainless Steel         P EP Grade
                   

MODEL CONNECTION SIZE A B C D E F G
  MFS Male 1/4" 58.7 11.1 72.8 48 18 28  
1/2" 82.5 18.3 87 48 27 44.3 X 38  
  MFS Female 1/4" 76.2 11.1 72.8 48 18 28  
1/2" 114.3 18.3 87 48 27 44.3 X 38