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Cylinder Valve Series

Cylinder valve is basically attached to the high pressure cylinder and controls the gas flow.
It is designed to meet high pressure and high temperature environment and provided with
diversified CGA connections suitable for international standards.
The internal structure of the valve is configured with diaphragm and
seat holder providing sealing integrity by gasket, and preventing the heat deformation from welding.

High Pressure Cylinder Valve (CLV4)

■ Diaphragm seal type. 
cylinder_valve.gif
Major Specifications
Cv Value 0.3
Orifice Size 3.5mm
Max. Working Pressure (G.) 20.6MPa
Max. Working Temp. -20℃ ~ 70℃
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.
1x1010Pa · m3/s
Particle Inspection (EP only)
Pressure : 60~80psi N2 Gas
Sample Volume : 1CFM
0.1㎛ and Larger
No count
Inner
Surface
Roughness
Ry ≤ 3.0㎛
10 μinch Ra(Avg.)
Cut off Length : 0.8mm
Measuring Length : 4mm
Material
NO. NAME MATERIAL
1 Body 316L Stainless Steel
304 Stainless Steel
2 Seat Packing PCTFE
3 Seat Stainless Steel 316L
4 Flow Ring Stainless Steel 316L
5 Packing PCTFE 25% GF
6 Burst Disc Nickel
7 Handle Aluminum
Ordering Number
MATERIAL INLET CONNECTION OUTLET CONNECTION STANDARD
S 316L Stainless Steel 8N 1/2″-14NGT Thread 632 CGA632 K KS Standard
4S 304 Stainless Steel 12N 3/4″-14NGT Thread 640 CGA640 G CGA Standard
- - 16N 1″-11 1/2NGT Thread 724 CGA724 - -
- - W28 W28-14 W22 W22-14 - -
- - - .
.
.
(Customer Option)
- .
.
.
(Customer Option)
- -

Safety Devices Outlet Cap Designs
A TYPE B TYPE C TYPE D TYPE E TYPE
A TYPE : CGA 170, 180, 320, 330, 660, 670 B TYPE : CGA 290, 326, 346, 350, 540 C TYPE : CGA 296, 510, 580, 590 D TYPE : CGA 678, 679 E TYPE : CGA DISS SERIES (632 ~ 642, 712 ~ 728)