HTC Check Valve (KF40CV80)

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In vacuum lines, preventing backflow is a critical factor directly tied to system stability. Today we introduce the HTC Check Valve (KF40CV80) - a key component that ensures reliable flow control in vacuum environments.

What Is a Check Valve?

A check valve is a device that allows fluid to flow in only one direction and prevents backflow. In vacuum systems it plays the following roles:

• Backflow prevention when the pump stops
• Prevention of chamber contamination
• Equipment protection

In short, it is a critical safety device that works quietly behind the scenes.

Product Features

The HTC Check Valve is designed to allow fluid (air) flow in only one direction, preventing unnecessary backflow and protecting your equipment.

Self-Acting Open/Close Structure

An internal disc opens and closes automatically based on pressure - no separate control required.

Optimized for Vacuum Systems

An essential component for pump protection and vacuum maintenance.

Versatile Installation Environments

Stable performance even in vacuum protection and low-pressure piping conditions.

Vertical Installation Only (Vertical Type)

Due to its internal ball structure, the valve operates along the direction of gravity. Vertical installation is mandatory.

Product Specifications

High Corrosion-Resistant Stainless Construction (CF8M / SUS316)

• Body: CF8M (SUS316 series) - strong against corrosion, chemicals, and moisture
• Suitable for semiconductor, research, and chemical processes

High-Performance Sealing (VITON)

• Seal: VITON material - excellent heat and chemical resistance
• Stable sealing maintained even under vacuum conditions

Wide Operating Temperature Range

Operable from −5°C to 100°C, covering general industrial environments to various vacuum systems.

Excellent Leak-Tightness (Low Leak Rate)

• Leak Rate: 1 × 10⁻⁵ mbar·L/sec
• Ensures vacuum performance while minimizing leakage

Stable Operating Pressure Conditions

• Pressure Range: 1 × 10⁻⁴ mbar
• Minimum operating differential pressure (ΔP): 7 mbar
• Reliable open/close operation even at low pressure

High Pumping Capacity

• Pumping Speed: 10,000 L/min
• Stable flow maintenance even in high-speed vacuum lines

Comparison with Similar Models

• KF40CV80 - Vertical installation only
• KF40CV80S (similar model) - Can be installed in any orientation

Selecting the right model based on your installation environment is important.

Summary

The KF40CV80 is a KF40-spec, vertical-type vacuum check valve that prevents backflow and protects your vacuum system - a truly indispensable component.

Closing Notes

We have summarized the essential information on the HTC Check Valve KF40CV80. In vacuum systems, even a single small part can directly affect the stability of the entire equipment. The check valve in particular is one of those parts that goes unnoticed in normal operation, but makes its importance unmistakably clear when problems arise.

Understanding the installation direction, specifications, and operating environment will go a long way in preventing equipment trouble on site. We hope this guide helps when you apply this product in the field.

Products to Use Together

• KF Hinge Clamp (Aluminum, Double-Pin)
• KF Hinge Clamp (Aluminum, Single-Pin)
• Vacuum Centering Ring & O-Ring (SUS304, VITON)

Purchase & Inquiry

Email: sales@valvepark.com | Tel: 1666-0215

VALVEPARK is a trusted supplier of industrial valves, delivering customized specifications, fast lead times, and rigorous quality control.