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Bakeable All Metal Valve
2.75" OD Conflat Flange
*Vacuum Essential*

Manual UHV Metal Valve
2.75" OD Conflat Flange
Ultra High Vacuum Valve
Vacuum Essential

• A: 2.46"
• B: 6.69"
• C: 7.44"
• D: 2.12"

Rotatable CF Conflat Flange with Thru Holes
Former PN: UHV-275-VE

2-3/4" OD CF Conflat Flange:
• 1.50" Tube OD
• 6 Clearance (Thru) Holes
• 0.265" Bolt Hole Diameter

2.75" OD CF Conflat Flange (CFF) Equivalents
275CF, CF35, CF38, CF40, CF275
UHV-CF275 UHV-275

2.75" OD Conflat Flange Bakeable All Metal Valve


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Spare Replacement Copper Seal for

2.75" OD Conflat Series Hardware

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Conflat Valves (All)

• Operating temperature: -200°C to 400°C
• Maximum bakeout, Open: 400°C
• Maximum bakeout, Closed: 300°C
• Vacuum rated: 1x10-10 Torr - UHV
• Helium leak rated: 10-10 standard cc/second or less
• Torque Range: 260 in-lbs. maximum 520 in-lbs.

• Pulled port body: 304 stainless steel
• Bellows: Formed 321 stainless steel
• Poppet seal: OFHC Copper
• Finish: Electro-Polish
• Actuation: Manual using self-lubricating bronze nuts with ACME threads

**This Vacuum Essential Includes**
Bakeable All Metal Valve, 2.75" Conflat: UHV-CF275
• 2-Bolt Kits (275-BK Series)
• 10-Copper Gaskets (275-CG Series)

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

LDS Vacuum Products is a 100% woman owned company and
certified Woman Owned Small Business (WOSB)
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.