Thin Film Materials Logo
Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
KF (QF) HV Half Nipples (Aluminum 6061-T6)

KF (QF) HV 304L Stainless Steel Half Nipples (Inch Tube)

KF (QF) HV 304L Stainless Steel Half Nipples (Inch Tube): Precision Fittings for Standard Vacuum Integration

KF (QF) HV 304L Stainless Steel Half Nipples (Inch Tube) are essential components in the assembly of high-vacuum (HV) systems that use inch-based tubing. These half nipples feature a single KF (QF) flange on one end, allowing for quick integration with standard vacuum hardware, while the open end accommodates direct connection to inch-dimensioned tubing through welding, brazing, or mechanical assembly.

Manufactured using high-quality 304L stainless steel, these fittings are designed to provide long-term corrosion resistance, mechanical strength, and low outgassing performance in high-vacuum environments. Their durability and compatibility with standard vacuum plumbing make them ideal for use in foreline lines, chamber extensions, or instrumentation ports—particularly in research labs, industrial vacuum processes, and OEM system platforms that adhere to inch-based standards.

Unlike full nipples, which are equipped with KF flanges at both ends for extended straight-line connections, KF (QF) HV 304L Stainless Steel Half Nipples (Inch Tube) are optimized for compact integration where only one KF flange is required. This makes them highly efficient for building modular vacuum sections or attaching custom tubing assemblies to larger systems.

Each half nipple is machined to tight tolerances and finished to a vacuum-compatible smooth internal surface. This attention to detail supports vacuum conditions down to 10⁻⁶ Torr or lower, depending on system cleanliness and assembly quality. The KF flange interface ensures easy, tool-free connection with centering rings and clamps, allowing users to assemble or reconfigure systems rapidly without specialized equipment.

TFM offers standard sizes for immediate use, but we also provide customization services for vacuum professionals who require non-standard tube lengths, diameters, or features such as precision weld preps or electropolished finishes. Our in-house engineering and fabrication capabilities allow us to deliver made-to-order solutions that meet the specific dimensional and material standards of your system.

In summary, KF (QF) HV 304L Stainless Steel Half Nipples (Inch Tube) are robust, vacuum-ready fittings tailored for inch-sized tubing systems. Their single-flange design, combined with proven 304L stainless steel performance, makes them a versatile and reliable choice for modern HV infrastructure.

Ordering Table

Flange Size/OD Type Flange Material Part Number
KF10 (1.18" OD) Half Nipple, Clamp Style 6061-T6 Aluminum QF10-050-LFA
KF16 (1.18" OD) Half Nipple, Clamp Style 6061-T6 Aluminum QF16-050-LFA
KF16 (1.18" OD) Half Nipple, Clamp Style 6061-T6 Aluminum QF16-075-LFA
KF25 (1.57" OD) Half Nipple, Clamp Style 6061-T6 Aluminum QF25-100-LFA
KF40 (2.16" OD) Half Nipple, Clamp Style 6061-T6 Aluminum QF40-150-LFA
KF50 (2.95" OD) Half Nipple, Clamp Style 6061-T6 Aluminum QF50-200-LFA

Accessories Table

KF (QF) HV 304L Stainless Steel Half Nipples (Inch Tube) 2

Description For Per Package Part Number
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 (Aluminum with Fluorocarbon O-Ring) KF10 Flanges 1 QF10-050-ARV
Centering Ring (Aluminum with Fluorocarbon O-Ring) KF16 Flanges 1 QF16-075-ARV
Centering Ring (Aluminum with Fluorocarbon O-Ring) KF25 Flanges 1 QF25-100-ARV
Centering Ring (Aluminum with Fluorocarbon O-Ring) KF40 Flanges 1 QF40-150-ARV
Centering Ring (Aluminum with Fluorocarbon O-Ring) KF50 Flanges 1 QF50-200-ARV
Description For Per Package Part Number

Reviews

There are no reviews yet.

Be the first to review “KF (QF) HV 304L Stainless Steel Half Nipples (Inch Tube)”

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