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VPKF40B-E-Z

Borosilicate KF Viewport for flange installation, Standard | 349725

Connection type

Nominal diameter

Leak rate

< 1E-9 mbar ∙ l/s

Max. operating temperature

150 °C

View diameter

40 mm

Window material

Borosilicate

Transmission range

400-2500 nm

Window mounting

FKM O-Ring

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Connection type

Nominal diameter

Leak rate

< 0.75E-9 Torr ∙ l/s

Max. operating temperature

302 °F

View diameter

1.575 ″

Window material

Borosilicate

Transmission range

400-2500 nm

Window mounting

FKM O-Ring

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available

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Category	Borosilicate KF Viewport for flange installation, Standard
Bakeout temperature	302 °F
Max. bakeout temperature	150 °C
Window thickness	0.157 ″
Article no.	349725
Connection type	KF
Nominal diameter	40
Leakrate	< 1E-9 mbar ∙ l/s
Max. operating temperature	150 °C
Max. operating temperature	302 °F
Outer diameter	57 mm
Outer diameter	2.244 ″
Diameter	55,1 mm
Diameter	2.169 ″
Length	10 mm
Length	0.394 ″
Diameter	2.169in
View diameter	1.575 ″
Window mounting	FKM-O-Ring
Window thickness	4 mm
Window material	Borosilicate
Transmission range	appr. 400 - 2500 nm
View diameter	40 mm

Product	Nominal diameter	Connection type	Length	Window thickness	Window material	View diameter	Availability
VPKF40B-E	40	KF	8 mm	4 mm	Borosilicate	40 mm	available
VPKF50B-E	50	KF	8 mm	4 mm	Borosilicate	50 mm	available
VPKF50B-E-Z	50	KF	10 mm	4 mm	Borosilicate	50 mm	available

DN	Nominal diameter	40
AD	Outer Diamter	57 mm
D1	View diameter	40 mm
D2	Diameter	55,1 mm
L1	Hight	10 mm
L2	Window thickness	4 mm

DN	Nominal diameter	40
AD	Outer Diamter	2.244 ″
D1	View diameter	1.575 ″
D2	Diameter	2.169 ″
L1	Hight	0.394 ″
L2	Window thickness	0.157 ″

Downloads	(DE) VACOM Produktinformationen ISO & KF Standardschaugläser.pdf (EN) VACOM product information ISO & KF standard viewports.pdf
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Accessories

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XA40

KF Clamp Chains | 303289

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on request

VPKF40B-WINDOW

Replacement window for standard KF-viewport, DN40 | 380660

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available

KF40VR-VP

Replacement O-ring for standard KF-viewports, DN40 | 380670

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available

Upselling Products

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VPKF40Q-E-Z

Fused Silica KF Viewport for flange installation, Standard | 349733

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Product	Availability
VPKF40B-L	in production	- +