Product Overview
The MOTOKU KF25 (NW25) to KF16 (NW16) Conical Reducer is a high-quality stainless steel vacuum adapter designed to connect vacuum systems with different flange sizes. This component facilitates a smooth transition between a KF-25 flange (40 mm diameter) and a KF-16 flange (30 mm diameter), ensuring compatibility and reliable performance in vacuum applications.
Key Features
- Type: KF25 (NW25) to KF16 (NW16) Conical Reducer
- Material: High-grade Stainless Steel 304 for durability and corrosion resistance.
- Flange Dimensions: KF-25 flange with 40 mm diameter, KF-16 flange with 30 mm diameter.
- Length: End-to-end length of 40 mm.
- Compatibility: Designed for seamless integration with standard vacuum fittings.
- Application: Ideal for creating transitions in vacuum lines where different KF flange sizes are present.
Product Images



Setup and Installation
This conical reducer is designed for straightforward installation within KF (Klein Flange) vacuum systems. Proper installation is crucial for maintaining vacuum integrity.
- Preparation: Ensure all mating KF flanges and the reducer are clean, dry, and free from any debris, dust, or oils. Use lint-free wipes and appropriate cleaning agents if necessary.
- Gasket Placement: Place a new, clean O-ring gasket (typically Viton or Buna-N, depending on application requirements) into the groove of each KF flange that will connect to the reducer.
- Alignment: Carefully align the KF25 end of the reducer with the KF25 flange of your vacuum component and the KF16 end with the KF16 flange of the other component. Ensure the O-rings are properly seated and not pinched.
- Clamping: Secure the connections using appropriate KF clamps (e.g., wing nut clamps or bolt clamps). Tighten the clamps evenly to apply uniform pressure around the flange, compressing the O-ring gasket to create a vacuum-tight seal. Do not overtighten, as this can damage the O-ring or flanges.
- Leak Check: After installation, perform a leak check on the entire vacuum system to confirm the integrity of the new connection.
Operating Considerations
The KF25 to KF16 conical reducer is a passive component and does not require active operation. Its function is to provide a reliable connection between different KF flange sizes within a vacuum system. Ensure that the material compatibility (Stainless Steel 304) is suitable for the gases and vacuum levels of your specific application.
Maintenance
Regular maintenance of vacuum components, including this reducer, is essential for optimal performance and longevity.
- Cleaning: Periodically inspect the reducer for any signs of contamination, such as dust, oil residue, or corrosion. Clean the surface with appropriate vacuum-compatible cleaning solutions and lint-free cloths.
- Gasket Replacement: O-ring gaskets are consumable items. Replace them whenever a connection is broken or if signs of wear, cracking, or deformation are observed. Always use new O-rings for critical vacuum seals.
- Storage: When not in use, store the reducer in a clean, dry environment, preferably in a sealed bag or container to prevent contamination.
Troubleshooting
Most issues related to this reducer will involve vacuum leaks. If your vacuum system is not achieving the desired vacuum level or is experiencing a leak, consider the following:
- Leak at Connection: The most common cause of leaks is improper sealing at the flange connections.
- O-ring Issues:
- Ensure the correct size and material O-ring is used.
- Check for pinched, cut, or damaged O-rings. Replace if necessary.
- Verify O-rings are clean and properly seated in their grooves.
- Clamp Tightness: Ensure KF clamps are tightened evenly and sufficiently to compress the O-ring, but not excessively.
- Surface Contamination: Contaminants on the flange surfaces or O-rings can prevent a proper seal. Re-clean and reassemble.
- Component Damage: Inspect the reducer and mating flanges for any physical damage, scratches, or deformities that could compromise the seal.
Specifications
| Attribute | Value |
|---|---|
| Model Number | KF25 (NW25) to KF16 (NW16) |
| Brand | MOTOKU |
| Material | Stainless Steel 304 |
| KF-25 Flange Diameter | 40 mm |
| KF-16 Flange Diameter | 30 mm |
| End-to-End Length | 40 mm |
| Item Weight | 0.01 Ounces (approx. 0.28 grams) |
| Color | Stainless Steel |
| Connector Type | Reducer |
| UPC | 711931262916 |
Warranty and Support
Specific warranty information for this MOTOKU product is not provided in the available documentation. For support or warranty inquiries, please refer to the seller or manufacturer's official website, or contact their customer service directly. Always retain your proof of purchase for any warranty claims.
For additional assistance, you may visit the MOTOKU Store on Amazon.