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Diaphragm Valve Series

UHP Products

Ultra High Flow Manual Diaphragm Valve (HFLDV)

■ Internally threadless and springless
■ Fully functional from a vacuum to 275psig
■ Aerodynamic, fully swept flow passages
■ Minimum particle generation and particle areas
■ 100% Helium leak tested 
09-Ultra High Flow Manual Diaphragm Valve (STD TYPE).gif
Major Specifications
Size 3/4″, 1″, 1-1/2″, 2″
Cv Value 10
Max. Working Pressure (G.) 1.86MPa
Max. Working Temp. -10℃ ~ 80℃
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 Disk PCTFE
3 Diaphragm 316L Stainless Steel
4 Handle ALUMINUM
Ordering Number
MATERIAL SIZE CONNECTION
S 316L Stainless Steel 12 3/4″ TW Butt Weld(3/4″,1″,1-1/2″,2″)
D 316L Stainless Steel Remelted 16 1" VM MFS Male(3/4″,1″)
4S 304 Stainless Steel 24 1 - 1/2″ VF MFS Female(3/4″,1″)
- - 32 2″ - -

PURGE PORT LOCATION PURGE PORT CONNECTIONS GRADE
P0 Outlet Side PVM 1/4″ MFS Male AP AP Grade
P1 Inlet and Outlet BLANK BA Grade
P2 Inlet Side PVF 1/4″ MFS Female P EP Grade
Blank No Purge Port - -


OUTSIDE DIMENSIONS
  PORT SIZES
3/4″, 1″ 1-1/2″, 2″
A 19 29.2
B 218 228