Click to enlarge

NW40 to 1-3/8" Quick Coupling
A: 1.39"
B: 2.1"

NW40 to 1.38" Quick Connect Coupling
Overstock Price

• Compression Type Quick Disconnect
• Compression Port
• For tube connections & tubulated gauges
• NW40 (KF40) Vacuum Coupling
• 304 Stainless

NW40 (KF40) Flange OD: Ø2.18"
• NW40 Centering Ring Counter Bore: 1.62"

NW40 High Vacuum Flange Equivalents
KF40, KF-40, K150, NW-40, QF40, ISO-QF
NW40-Q138-OS Compare to: QF40XVC137 P104168 734032 K150XDS-138 1000015 QF40XQD138-2.28

NW40 Quick Coupling To 1-3/8" Tube Size

NW40-Q138-OSPrice: $165.00Overstock: $73.00

Click to enlarge
Click to enlarge
138 Series (1-3/8") O-Ring, Viton

All NW40 Hardware

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Click to enlarge
NW Quick Couplings (ALL)

Quick Couplings (ALL)

NW40 Flange OD: 2.18"

***NW40 Flange Accessories Available Below***
NW40 Centering Rings
NW40 Clamps, All Types
NW40 Plastic Caps

Contact LDS with any questions:
Phone (407) 862-4643 via Fax (407) 862-8723 or

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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.