Centering Ring KF-16 Overpressure Fittings, Alum. Outer Ring, SS Inner Ring & Viton O-ring These KF-16 Centering Ring overpressure vacuum fittings follow ISO-KF standards and have a flange size of NW-16. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel with Viton® O-Ring. Viton® is well known for its excellent resistance to heat (400°F/200°C) and to aggressive fuels and chemicals. Viton® is a registered trademark of DuPont Performance Elastomers.KF-16 Centering Ring Overpressure with Viton® O-RingISO-KF Flange Size: NW-16 Pressure Rating: This overpressure centering ring, when used with standard clamps, can be used up to 100 PSIG. Please ensure that all other system components can handle positive pressure outputs before applying pressure.

Centering Ring KF-25 Overpressure Fittings, Alum. Outer Ring, SS Inner Ring & Viton O-ring These KF-25 Centering Ring overpressure vacuum fittings follow ISO-KF standards and have a flange size of NW-25. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel with Viton® O-Ring. Viton® is well known for its excellent resistance to heat (400°F/200°C) and to aggressive fuels and chemicals. Viton® is a registered trademark of DuPont Performance Elastomers.KF-25 Centering Ring Overpressure with Viton® O-RingISO-KF Flange Size: NW-25Pressure Rating: This overpressure centering ring, when used with standard clamps, can be used up to 100 PSIG. Please ensure that all other system components can handle positive pressure outputs before applying pressure.

Centering Ring KF-40 Overpressure Fittings, Alum. Outer Ring, SS Inner Ring & Viton O-ring These KF-40 Centering Ring overpressure vacuum fittings follow ISO-KF standards and have a flange size of NW-40. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel with Viton® O-Ring. Viton® is well known for its excellent resistance to heat (400°F/200°C) and to aggressive fuels and chemicals. Viton® is a registered trademark of DuPont Performance Elastomers.KF-40 Centering Ring Overpressure with Viton® O-RingISO-KF Flange Size: NW-40 Pressure Rating: This overpressure centering ring, when used with standard clamps, can be used up to 75 PSIG. Please ensure that all other system components can handle positive pressure outputs before applying pressure.

Centering Ring KF-50 Overpressure Fittings, Alum. Outer Ring, SS Inner Ring & Viton O-ring These KF-50 Centering Ring overpressure vacuum fittings follow ISO-KF standards and have a flange size of NW-50. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel with Viton® O-Ring. Viton® is well known for its excellent resistance to heat (400°F/200°C) and to aggressive fuels and chemicals. Viton® is a registered trademark of DuPont Performance Elastomers.KF-50 Centering Ring Overpressure with Viton® O-RingISO-KF Flange Size: NW-50 Pressure Rating: This overpressure centering ring, when used with standard clamps, can be used up to 50 PSIG. Please ensure that all other system components can handle positive pressure outputs before applying pressure.