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Ion Gauge Tube, Kovar Glass
NW25 PORT
Iridium Filament (Single)

GK-IR-NW25
Replacement Ion (Hot Filament) Gauge Tube
Glass Bayard-Alpert Type Ionization Vacuum Gauge
Hot Cathode Ion Gauge Tube
Standard Range
NW25 (KF25) Port OD: Ø1.57"

• Uncoated Kovar Glass
• High Vacuum Glass Ion Gauge Tube
• Iridium Filament (Single)

NW25 High Vacuum Flange Equivalents
KF25, KF-25, K100, NW-25, QF25, ISO-QF

Former LDS PN: 1050-1020-NW25
Varian Equivalent: K2471306, X3004-64306
(571 Series)
Granville Equivalent: 274032

571 equivalent ionization gauge tube with thoria-coated iridium filament, NW25 KF

Equivalents: X3004-64306, 0571-K2471-306, 0571-K2471306, G100KQF25, I-KF25, P104509, P102036, 274032


Single Iridium Filament
NW25 (KF25) Flange
GK-IR-NW25

GK-IR-NW25$359.00

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View All Ion Gauge Tubes


All NW25 Hardware


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NW25 (KF25) UHV Conversion Hardware



Operating at a pressure below 10-8?
Viton O-Ring Sealed compression ports limit the system pressure because of leakage and permeation.
Use Conflat Flanges & Copper Gaskets Instead!

Click Here To Change Port To Conflat Flange

Single Ion Calibration

NW25 Flange OD: 1.57"

***NW25 Flange Accessories Available Below***
NW25 Centering Rings
NW25 Clamps, All Types
NW25 Plastic Caps

Contact LDS Vacuum with any questions:
Phone (407)862-4643 via Fax (407)862-8723 or
info@ldsvacuum.com

LDS Vacuum Products is a 100% woman owned company.
The logos and/or trademarks appearing on this page are not owned by or registered to LDS but, rather, designate products sold by LDS, and are owned and/or registered to the manufacturers or suppliers of the products.