Vacuum Flanges and Fittings

Bored and Blank Flanges

Our 304 and 316 stainless steel and aluminum blank flanges and bored weld rings are available in a range of styles, including ISO-KF (NW), ISO-K, ISO-F, CF (Conflat), ASA, EVAC, and WireSeal. Find the perfect fit for your HV or UHV custom vacuum system design or in discrete vacuum fittings.

Features

• Clamped and bolt-style connections
• Clearance hole and tapped configurations
• Imperial and metric threads

Full, Half, and Reducer Nipples

PV V&E offers welded and flanged end full nipples, half nipples, and reducer nipples for most vacuum systems and terminations, including ISO-KF (NW), ISO-K, CF (Conflat), and ASA.

Features

• 304 stainless steel construction
• Common standard lengths
• Straight and conical shapes
• Custom configurations possible

Elbows

Find flanged end 90 and 45-degree elbow configurations for ISO-KF (NW), ISO-K, CF (Conflat), and ASA terminations based on your vacuum system needs.

Features

• 304 stainless steel construction
• Custom configurations possible 
• Different length tangents, mitered, and radius shapes

Tees

Browse standard and reducer tees for any vacuum system, including flanged end terminations such as ISO-KF (NW), ISO-K, CF (Conflat), and ASA.

Features

• 304 stainless steel construction
• Common standard lengths
• Custom designs possible
• Full-size or reducer tee configurations

Cross Fittings

PV V&E has 4-way, 5-way and 6-way vacuum crosses for building vacuum chambers, available with including ISO-KF (NW), ISO-K, CF (Conflat), and ASA flanged end terminations.

Features

• Alternate materials and custom designs are possible
• Easy to install
• Standard lengths and diameters

Flexible Hoses and Couplings

Dampen vibrations form quick and easy connections between misaligned points with PV V&E flexible hoses and couplings with ISO-KF (NW), ISO-K, CF (Conflat), and ASA flanged end terminations.

Features

• 321 stainless steel formed bellows construction
• Custom designs possible
• Many different hose and coupling lengths and diameters

Adapters & Transitions

Incorporate additional components and instrumentation into your vacuum system with aluminum-to-stainless and glass-to-Kovar, ISO-KF (NW), ISO-K, CF (Conflat), and ASA flanged end adapters and transitions.

Features

• Custom designs possible
• Flange-to-fitting adapters with Swagelok, VCR, NPT, Quick Disconnect (QD), and Welch Pump connections
• Flange-to-flange adapters with straight and conical tubes, tees, crosses, and zero-length double-sided flanges

Seals, Clamps, and Bolt Kits

Make vacuum-tight connections with Pfeiffer Vacuum Valves & Engineering’s complete range of clamps, bolt-kits, gaskets, seals, and centering rings designed to meet ISO standards. Intended for ISO-KF (NW), ISO-F, ISO-K, CF (Conflat), ASA, Wire Seal, and EVAC flange systems.

Features

• Aluminum and steel clamps and hardware
• Elastomer seal rings in a range of materials, including FKM, FFKM, Silicon, Buna, and more
• Metal UHV seals, including copper, silver-plated copper, and aluminum

Tubing & Weld Fittings

PV V&E stocks tubing and all types of elbows, tees, crosses, reducer nipples, end caps, flexible bellows hoses, and weld fittings to create custom manifolds, forelines, and long-run connections to pump and other facilities.

Features

• 304 stainless steel standard
• 316L stainless steel optional