VLCD Compact Diaphragm Valves

The VLCD series, is the compact version of our VLD series valves. The external size is reduced by 20% making this a light and low-cost option.

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Achieves 20% reduction in external size as compared to the conventional KD series. (Available only in 1/4″)
Achieves low cost pricing through commonization of parts and utilization of a forged body.
Because the cleaning and inspection processes are the same as our conventional products, the VLCD series can be used in the manufacturing of Semiconductor, FPD, and LED production devices.

The valves are designed to be used under atmospheric pressure. Usage such as under vacuum vessels are not guaranteed.
For high temperature applications, please select appropriate material for air-fittings and tubes to assure proper performance.

Product Details

Specifications
Size		VLCD4 (1/4")
Cv		0.1
Maximum Operating Pressure		142psig(0.98MPa (G))
Wetted Area Volume		0.85cm³
Fluid Temperature		-10ºC~80ºC
Leak Rates	Across the Seat He Leak Test Rates	≤ 1×10^-10Pa·m³/sec
	Inboard He Leak Test Rates	≤ 1×10^-10Pa·m³/sec
Atmospheric Temperature		-10ºC~60ºC
Actuation Pressure (Pneumatic)		0.4~0.6MPa (G)
Cycle Life *		4 million cycles
* Test Condition / Seat material : PCTFE Gas : N2 Pressure : 0.98MPa
Product Grade
Grade	STD	EP
Body Material	SUS316L
Surface Roughness	≤ Rz 3.2 µm	≤ Rz 0.7 µm
	≤ Ra 0.5 μm / 20 μin	≤ Ra 0.13 μm / 5 μin
Polish	Mechanical Polished	Electro Polished
Cleaning	Degreasing + Precision Cleaning
Packaging	Single bagged package	Double bagged package

PRODUCT CODE KEY

Model	Size	Operation	Valve Shape		Connection	Seat Material		Grade + Body Material
VLCD	4	C	S	-	VF	C	-	EP-316L
VLCD - type Diaphragm Valve	4: 1/4"	C: Normally Closed O: Normally Open	S: Straight		V: CVC Male VF: CVC Female	C: PCTFE		STD-316L: Mechanical Polished + SUS316L EP-316L: Electro Polished + SUS316L