Products

New Products

Diaphragm Valve Series

UHP Products

High Pressure Manual Diaphragm Valve (HDV3)

■ Branch type.
■ 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.
■ Various end connections are available (MFS Male, MFS Female, Lok). 
High Pressure Manual Diaphragm Valve (BRANCH Type).gif
Major Specifications
Size 1/4″
Cv Value 0.1
Orifice Size 2.3mm
Max. Working Pressure (G.) 23.5MPa
Max. Working Temp. -10℃ ~ 40℃
Internal Leakage Allowance (He)
Test Pressure ≤ 1×10-2 Torr
Holding Time ≥ 30 sec.
1x10-10Pa · m3/s
External Leakage Allowance (He)
Test Pressure ≤ 1×10-2 Torr
Holding Time ≥ 1 min.
1x10-10Pa · 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
304 Stainless Steel
2 Seat PCTFE
3 Diaphragm Ni-Co Alloy
4 Handle ALUMINUM
Ordering Number
MATERIAL SIZE CONNECTION FLOW GRADE
S 316L Stainless Steel 4 1/4″ VM MFS Male 12T3
AP AP Grade
D 316L Stainless
 Steel Remelted
- - VF MFS Female BLANK BA Grade
4S 304 Stainless Steel - - SW Lok 13T2
P EP Grade
- - - - TW Butt Weld - -

MODEL CONNECTION A B C D E F G H

MFS Male 57 11 74 48 - 25.4 28.5 3.5

MFS Female 70.6 11 74 48 - 25.4 28.5 3.5

Lok 74 11 74 48 13.5 25.4 28.5 3.5

Butt Weld 135 11 74 48 - 25.4 28.5 3.5