"Variac" Variable Flow Valve

The Variac valve can function as both a needle valve and a pneumatic valve. The variable flow can be controlled by turning the black handle on the actuator as well as actuating the valve to open fully. Available for fluids to 180C.

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FEATURES

The flow can be controlled by rotating the black handle on top of the actuator. One valve can act as two valves — a pneumatic valve and a needle valve. This enables a simpler piping layout, space conservation, and cost reduction.
High temperature Variac valves (maximum operating temperature 180°C) are also available upon request. A dedicated hot shell heater is also available as a separate part.

WETTED AREA MATERIAL

SUS316L

PRECAUTIONS

The set amount of flow may vary depending on the usage conditions.
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 Selection

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Product Details

Specifications
Size		IB4V (1/4")	IB6V (3/8")·IB8V (1/2")
Disk Material		PCTFE, O-ring (fluorine rubber)
Cv		Adjustment range: 0.03~0.28	Adjustment range: 0.05~0.74
Wetted Area Volume		0.185in³ (3.03cm³)	0.359in³ (5.88cm³)
		CVC male, OPEN state
Maximum Operating Pressure		142psig (0.98MPa(G))
Fluid Temperature		Standard -10~100ºC
		High-temperature specifications -10~180ºC
Atmospheric Temperature		-10ºC~60ºC
Actuation Pressure		0.4~0.7MPa (G)
Leak Rates	Across the Seat He Leak Rates	≤ 1×10^-9 sccs (≤ 1×10^-10 Pa·m³/sec)
	Inboard He Leak Rates	≤ 1×10^-9 sccs (≤ 1×10^-10 Pa·m³/sec
Cycle Life*		1 million cycles
* Test Condition / Seat material : PCTFE Gas : N2 Pressure : 0.98MPa
Product Grade
Grade		STD	EP
Material		SUS316L
Surface Roughness	Only Body's Internal Surface	≤ Rz 3.2 µm	≤ Rz 0.7 µm
		≤ Ra 0.5 μm / 20 μin	≤ Ra 0.13 μm / 5 μin
		No bead cut in welded area
Cleaning		Degreasing + Precision cleaning
Packaging		Single bagged package	Double bagged package

PRODUCT CODE KEY

Model	Size	Type	Operation	Valve Shape		Connection	Bonnet Gasket Material	Disk Material		Grade + Body Material
IB	4	V	C	S	-	V	C	C	-	EP-316L
IB- type bellows Seal Valve	4: 1/4" 6: 3/8" 8: 1/2"	V: Variac	C: Normally Closed O: Normally Open	S: Straight		V: CVC Male VF: CVC Female S: Compression	C: PCTFE M: SUS316L (Fluorine resin coating)	C: PCTFE F: Fluorine Rubber		STD-316L: Mechanical Polished + SUS316L EP-316L: Electro Polished + SUS316L

* In the products that have a maximum usage temperature of 180°C, the disk material is fluorine rubber, and the bonnet gasket material is SUS316L (PFA coated).
The actuator dimension φA in that case will be φ44 from 1/4" to 1/2". We also offer a hot seal for a special-purpose heater.
* All of the parts that come in contact with gas are made of SUS316L.

“Variac” Variable Flow Valve