IVB

The low-cost IVB series bellows seal isolation valve structure provides high seal performance and the stainless steel body can handle a wide range of gases.

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FEATURES

The IVB series realize lower cost and easy-to-maintain simple structure by reducing the number of component parts.
By adopting a stainless steel body (SUS304), a wide range of gases can be handled with excellent corrosion resistance.
These valves have high seal performance due to their bellows seal structure.
The IVB series realizes lower cost by utilizing a square-shaped body.

WETTED AREA MATERIAL

SUS304, SUS316L
A6063 (built-in magnet for magnetic proximity switch)
Fluorine rubber

PRECAUTIONS

The flow direction of the vacuum valves is designed so that the pump can be connected either to the side or bottom, but, depending on the velocity of the fluid passing through the valve, the lifetime of the bellows may decrease markedly if connected to the side.
We recommend connecting the vacuum pump to the bottom side.
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 tub-es to assure proper performance.

Product Selection

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Product Details

Specifications
Fluid Temperature		-15~100°C (maximum 70°C for actuator)
Pressure Range		1.4x10^-10~29 psia (1x10^-6 ~2x10⁵ Pa (abs) [0.1MPa (G)])
Standard Materials		Body/SUS304
		Bellows/SUS316L
		Actuator/A6063 (built-in magnet for magnetic proximity switch)
		Seat/fluorine rubber *Other materials not listed may be available.
Bellows Durability		Actual results more than 1M cycles (in vacuum) (the bellows cycle life drops when it is used on the pressurized side).
Actuation Pressure		58~101 psig (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^-10Pa·m³/sec)
IVB Series
		15A	25A	40A	50A
Orifice (mm)		0.63 (16)	0.91 (23)	1.10 (28)	1.50 (38)
Valve Lift (mm)		0.39 (10)	0.47 (12)	0.59 (15)	0.79 (20)
Conductance (ℓ/sec)		5	11	28	42
Cylinder Volume NC/NO (cc)		9	13	16	33
Cylinder Volume DA (cc)		9	13	16	33

PRODUCT CODE KEY

Model

Size

Operation

Valve Shape

Connection (Seat Side)

Connection (OUT Side)

Seat Material

Custom Specifications

Accessories

RoHS

IVB

Specific Code

(RS)

IVB: Square Shaped Bellows Valve

15: 15A
25: 25A
40: 40A
50: 50A
65S: 65A
80S: 80A
100S: 100A

M: Manual
C: Normally Closed
D: Double Acting
O: Normally Open

A: Angle Type
Y: Y-shape Straight
Z: Z-shape Inline

NW: ISO KF Flange
VF: JIS VF Flange
VG: JIS VG Flange
CF: ConFlat Flange
MF: ISO MF Flange

Not Shown: Same Cases As (Seat Side) Omitted
F: JIS VF Flange
G: JIS VG Flange

F: Fluorine Rubber

Not Shown: Standard Products Are Omitted

Not Shown: No Switch
SO: With Switch On the Open Position
SC: With Switch On the Closed Position
W: With Open and Closed Position
*1

Not Shown: With PD31L3 Switch
PE: With PE33L3 Switch
*1

(RS): RoHS Compliant Product

* We handle materials and shapes other than those noted.
*1 The accessories switch is an option only for the pneumatic type.