Thin Film Materials Logo
Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
KF (QF) HV Full Nipples (304L SS)

KF (QF) HV Full Nipples (304L SS)

KF (QF) HV Full Nipples (304L SS): Dual-Flanged Stainless Steel Connectors for High-Vacuum Line Integrity

KF (QF) HV Full Nipples (304L SS) are precision-engineered vacuum components featuring two KF (QF) flanges connected by a straight section of 304L stainless steel tubing. These full nipples are ideal for connecting vacuum lines, extending chamber ports, or linking instruments in high-vacuum (HV) systems where leak-tight, corrosion-resistant, and modular construction is critical.

Manufactured by TFM to meet stringent vacuum performance standards, KF (QF) HV Full Nipples (304L SS) are widely used in through-line or foreline plumbing applications and serve as essential structural elements in vacuum chambers, pump stations, and analytical equipment. Their full-flange design enables rapid installation or removal between mating KF flanges using elastomeric o-rings, centering rings, and circumferential clamps.

The use of 304L stainless steel provides superior resistance to corrosion, chemical exposure, and thermal cycling—key characteristics for HV environments subjected to frequent venting, reactive gas flows, or elevated temperatures. The low carbon content of 304L ensures minimal risk of intergranular corrosion, even after welding or prolonged system operation. These properties make KF (QF) HV Full Nipples (304L SS) ideal for cleanroom, semiconductor, thin-film deposition, and R&D vacuum applications.

Each KF (QF) HV Full Nipple (304L SS) is supplied with two KF-standard flanges (e.g., KF16, KF25, KF40, KF50), allowing tool-free integration with existing KF hardware. The tube between the flanges is welded, seamless, and cut to standard or custom-specified lengths, enabling direct integration between vacuum pumps, valves, or diagnostic ports without the need for additional adapters or fittings.

The connection system is simple yet effective: each end of the full nipple is clamped to another KF flange using a centering ring with an o-ring, which is compressed between two chamfered sealing faces. The resulting seal supports vacuum levels down to 10⁻⁸ Torr, with temperature limits governed by the o-ring material—typically in the range of 0 °C to 120–180 °C.

TFM offers KF (QF) HV Full Nipples (304L SS) in a variety of standard lengths and flange sizes to suit common vacuum system architectures. For specific design needs, custom fabrication is available, including non-standard lengths, vented tube options, and precision internal surface finishes (e.g., electropolishing) for ultra-clean applications.

In summary, KF (QF) HV Full Nipples (304L SS) deliver robust, vacuum-compatible connectivity for critical HV system segments. With dual KF flanges, corrosion-resistant stainless steel tubing, and seamless compatibility with KF hardware, these nipples are a cornerstone component in building high-performance, modular vacuum environments.

Ordering Table

Flange Size/OD Type Flange Material Drawing Part Number
KF16 (1.18" OD) Full Nipple, Clamp Style 304L SS Tooltip QF16-075-N
KF16 (1.18" OD) Full Nipple, Clamp Style 304L SS Tooltip QF16-075-NL
KF25 (1.57" OD) Full Nipple, Clamp Style 304L SS Tooltip QF25-100-N
KF25 (1.57" OD) Full Nipple, Clamp Style 304L SS Tooltip QF25-100-NL
KF40 (2.16" OD) Full Nipple, Clamp Style 304L SS Tooltip QF40-150-N
KF40 (2.16" OD) Full Nipple, Clamp Style 304L SS Tooltip QF40-150-NL
KF50 (2.95" OD) Full Nipple, Clamp Style 304L SS Tooltip QF50-200-N
KF50 (2.95" OD) Full Nipple, Clamp Style 304L SS Tooltip QF50-200-NL

Accessories Table

Description For Per Package Part Number
Cast Clamps (SS) KF10, KF16 Flanges 1 QF16-075-CS
Cast Clamps (SS) KF25 Flanges 1 QF25-100-CS
Cast Clamps (SS) KF40 Flanges 1 QF40-150-CS
Cast Clamps (SS) KF50 Flanges 1 QF50-200-CS
Cast Clamps (Aluminum) KF10, KF16 Flanges 1 QF16-075-C
Cast Clamps (Aluminum) KF25 Flanges 1 QF25-100-C
Cast Clamps (Aluminum) KF40 Flanges 1 QF40-150-C
Cast Clamps (Aluminum) KF50 Flanges 1 QF50-200-C
Lever Clamps (Aluminum) KF10, KF16 Flanges 1 QF16-075-CHA
Lever Clamps (Aluminum) KF25 Flanges 1 QF25-100-CHA
Lever Clamps (Aluminum) KF40 Flanges 1 QF40-150-CHA
Centering Ring (SS with Fluorocarbon O-Ring) KF10 Flanges 1 QF10-050-SRV
Centering Ring (SS with Fluorocarbon O-Ring) KF16 Flanges 1 QF16-075-SRV
Centering Ring (SS with Fluorocarbon O-Ring) KF25 Flanges 1 QF25-100-SRV
Centering Ring (SS with Fluorocarbon O-Ring) KF40 Flanges 1 QF40-150-SRV
Centering Ring (SS with Fluorocarbon O-Ring) KF50 Flanges 1 QF50-200-SRV
Description For Per Package Part Number

Reviews

There are no reviews yet.

Be the first to review “KF (QF) HV Full Nipples (304L SS)”

Your email address will not be published. Required fields are marked *

Related Products

Related products

FAQ

Tube fittings are designed for tubes (measured by outside diameter and wall thickness) used in high-pressure and instrumentation applications, whereas pipe fittings are for pipes (identified by nominal pipe size) primarily used in fluid transport.

 

Common valve types include ball valves, gate valves, check valves, butterfly valves, and globe valves. Each serves a specific function—from quick shutoff (ball/gate valves) to flow regulation (globe valves).

 

  • For tubing, measure the outside diameter; for pipes, refer to the nominal pipe size (using conversion charts if needed). Always match the valve or fitting size to your pipe’s dimensions and flow requirements.

  • Frequently used thread types include NPT (National Pipe Tapered), BSP (British Standard Pipe), and UNC, along with slip-fit options that rely on compression or fusion rather than threads.

Interchangeability depends on manufacturer specifications and certification. Always verify compatibility via manufacturer guides or certified interchangeability charts.

 

  • A coupling is a short, straight fitting used to join two pipes or tubes. It provides a secure, leak-tight connection and can sometimes serve to extend or repair piping runs.

Consider valve type, pressure and temperature ratings, material compatibility with your fluid, actuation method (manual or automatic), and maintenance requirements.

 

  • Valves regulate flow by opening, closing, or partially obstructing the pathway. Their mechanisms (such as the rotation of a ball or the linear movement of a gate) determine the speed and precision of flow control.

  • A flange is a flat, circular component used to connect pipes, valves, or other equipment. Bolted together with gaskets, flanges provide a secure, leak-proof joint that facilitates both assembly and maintenance.

  • Manual valves require physical operation via handles or levers, whereas actuated valves use mechanisms—pneumatic, electric, or hydraulic—to open and close automatically or remotely.

  • Issues include leaks caused by improper installation, over-tightening, degraded seals, material incompatibility, and fatigue from repeated cycling. Regular inspection and proper installation practices help mitigate these problems.

Regular maintenance involves periodic inspections, cleaning or replacing worn seals, ensuring proper torque during installation, and adhering to manufacturer guidelines and local plumbing codes to preserve system integrity.

 

Shopping Cart
Scroll to Top