Vacuum Tubing and Weld Fittings
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Our team of engineers utilize techniques such as port pulling, boring, and coping, and CNC tube bending in fabricating these widely used shapes. Our ISO 9001:2015 certified manufacturing processes ensure your vacuum system nipples, elbows, tees, and components exceed your performance requirements.
Contact us for more information about PV V&E's full line of tube and weld fittings. Need a custom quote? Click here or email pvvesales.us@pfeiffer-vacuum.com today!
Vacuum Tubing and Weld Fittings Features
- 304 stainless steel standard
- 316L stainless steel optional
Flanged Vacuum Fittings for Your Application
Reducer Nipples Weld Fittings
We manufacture reducer nipple weld fittings from formed 304 stainless steel. These conical reducers form simpler, straight transitions between tubes of different diameters. Experience smooth transitions with low conductance losses. Multiple OD and lengths are in-stock with customization options.Elbows Weld Fittings
Our standard flanged elbow fittings are manufactured from CNC bent tubing and form a 45- 90- or 180-degree bend with custom bend options. Port lengths range from 1” to 3,” with miter and radius elbow types.Tees Weld Fittings
Tee weld fittings are used to make standard flanged fittings as well as build-to-print custom manifolds where 90-branches of the same or a different diameter is required. Our 304 stainless steel weld tees are available in port lengths from 0.750" to 6.06", with specific models featuring two different port lengths.Crosses Weld Fittings
Vacuum cross fittings join multiple outlets, create branch lines in an existing vacuum system, or even construct a small impromptu vacuum chamber. We offer 4-way, 5-way, 6-way, and reducer cross fittings manufactured from stainless steel. Tube OD and port lengths vary and can be customized upon request.End Caps Weld Fittings
End cap weld fittings can put a welded termination on a vacuum tube or pump header or create unique pumpline geometries in your vacuum system. Pfeiffer Vacuum Valves & Engineering carries fittings with extended tangents ideal for orbital welders. These stainless steel end caps can fit every standard tube size.Flexible Bellows Hose Fittings
Our flexible hose fittings are manufactured from 321 stainless steel and 304 stainless steel end cuffs. These are used in the fabrication of standard flanged flex hoses, or in custom manifolds that require a flexible section.Tubing
We offer a complete line of 304/304L and 316/316L grade stainless steel tubing in 10-foot lengths. Special cleaning and packaging processes are available upon request.Tubing and Weld Fittings Features
Our tubing & weld fitting specifications vary depending on the exact component. General features of our tubing and weld fitting components include:- 304 stainless steel standard
- 316L stainless steel optional
- Alternate materials available
- ISO 9001:2015 certified
Questions About Weld Fittings?
Our experts are available to answer any of your questions from design, manufacturing, quality assurance, or anything else you need! If you don't see your question below, contact us.What are the different finishes available on fittings and tubings?
Nor-Cal Products, Inc dba Pfeiffer Vacuum Valves & Engineering offers Bead-Blasted and Electropolished finishes on tubings and fittings. Exterior surface finish is usually a customer preference to match other components on the system cosmetically. On the outside of the tubing, the only difference between bead-blast and electropolish is cosmetic.
Bead-blast has a dull “satin” finish, and the surface is generally only on the exterior. Still, in some cases, PV V&E's flanges, fittings, and elbows can be special-ordered with bead-blasted internal surfaces. Bead-blasted internal surfaces can aid in the removal of process deposits. Electropolished surfaces are closer to a shiny mirror finish and incur an extra expense. Electropolishing also finishes the inside of the tube, so an electropolished internal finish reduces pump-down times.
What are the differences between formed bellows and edge-welded bellows?
Edge-welded bellows are made from separate round discs welded together in segments. Welded bellows provide the greatest stroke and dynamic flexibility. Welded bellows hoses can have a virtually unlimited length and can be manufactured in a variety of different thicknesses and materials as special orders. Formed bellows are made from a single piece of very thin tubing. They are designed to compensate for static misalignments where the tubing is not actively and repeatedly flexed. The inherent design of formed bellows limits their length.
