Kf Clamp 16 40 50
- Model:
- Brand:
- J&O
- Material:
- Stainless Steel 304
- Connection:
- Clamped
- Payment:
- T/T, L/C, Western Union
A KF clamp is a quick-release fastening component used to join ISO-KF vacuum flanges with a centering ring and O-ring. The clamp applies even force around the flange joint, compressing the O-ring to create a vacuum seal. Correct flange size, centering-ring position, gasket condition, and clamp alignment determine connection reliability.
How a KF Clamp Forms a Vacuum Seal
A typical KF connection contains two mating flanges, a centering ring, an O-ring, and a clamp. Once the flanges are aligned, the O-ring sits between the sealing faces while the centering ring keeps it positioned correctly. Tightening the clamp brings the flanges together and compresses the O-ring around the joint. This design permits rapid assembly and removal without a multi-bolt flange pattern.
Choosing the Correct KF Size
A kf 16 clamp is intended for a matching KF16 flange assembly, while larger connections require corresponding flange dimensions and centering hardware. The same principle applies to a kf40 clamp and kf50 clamp: the clamp size must match the mating flange geometry rather than being selected from tube appearance alone. Standard KF systems commonly include KF10, KF16, KF25, KF40, and KF50.
| Selection factor | Check before assembly | Effect |
|---|---|---|
| Flange geometry | Mating faces and dimensions | Prevents mismatch |
| Seal | O-ring material and condition | Maintains vacuum integrity |
| Centering | Ring position and fit | Keeps the seal concentric |
| Clamp structure | Load distribution and closure | Supports even compression |
| Environment | Temperature and process media | Determines material suitability |
Stainless Steel Construction and Surface Quality
The double-pin configuration uses SS304 stainless steel with CNC machining and a stated surface roughness of Ra≤0.8. Gasket choices include food-grade silicone, Viton, and PTFE. The listed pressure range is 0–10 bar, while the available specification covers 1/2–2 in and F10–F50. These factors should be matched with vacuum level, temperature, process media, and mating components.
Avoiding Vacuum Leakage During Assembly
Leakage can result from a scratched flange face, contaminated O-ring, displaced centering ring, or uneven clamp pressure. Before closure, the sealing surfaces should be clean and free from visible damage. The O-ring should sit evenly in the centering ring, and the two flanges should remain concentric as the clamp is tightened.
For vacuum tubing, chambers, pumps, and process equipment, a KF clamp should therefore be treated as part of a complete sealing assembly rather than an isolated fastening component. Correct size matching and controlled assembly provide a more stable connection during repeated maintenance.
Product Description
| Product Name: | KF Double Pin Vacuum Clamp |
| Size: | 1/2"-2" |
| Material： | SS304 |
| Machine： | CNC Lathe Machine |
| Connection: | Tri Clamp |
| SurfaceTreatment: | Ra≤0.8 |
| Gasket | Food Grade Silicone, Viton, PTFE |
| Type | Ferrule; elbow; tee; cross, hosebarb etc. |
| Optional | Customized tri clamp fitting available |
| Packing Details: | within carton box or plywood case |
| Applied Industries: | Chemical, gas, petrochemical, electric power, metallurgy, medical, food and pharmaceutical industry |
Product Parameter
