Cosmotec NW50 Manual Type L Bellows Valve for High-Integrity Vacuum Isolation

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Introduction

In high-vacuum systems, reliable isolation between atmosphere and vacuum is essential for maintaining process stability and equipment protection. The Cosmotec NW50 Manual Type L Bellows Valve is engineered to deliver dependable sealing performance, robust construction, and precise manual operation. This valve is well suited for engineers, system integrators, and procurement teams seeking proven Japanese vacuum technology.

High-performance NW50 manual bellows valve by Cosmotec, featuring reliable vacuum isolation, low leakage, and designed for long-term industrial use. Model: NW50MABV, Product Code: 20467.

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Cosmotec NW50 Manual Type L Bellows Valve – Product Overview

The Cosmotec NW50 Manual Type L Bellows Valve is designed to isolate vacuum and atmospheric environments with high sealing integrity. Its bellows seal structure minimizes leakage risks while supporting long-term, stable operation in demanding vacuum applications.

Key Functional Characteristics

• Manual open/close operation for straightforward control

• High-performance bellows sealing system

• L-type body configuration for compact piping layouts

• Flexible flow direction during installation

• Designed for isolation only; flow rate adjustment is not supported
  

Technical Advantages for Vacuum Applications

High-Performance Bellows Sealing

The valve utilizes an AM-350 bellows material, providing durability and resistance to repeated mechanical operation under vacuum conditions.

Ultra-Low Leakage Performance

This performance level makes the valve suitable for high-vacuum and ultra-high-vacuum systems where contamination control is critical.

Robust Stainless-Steel Construction

The valve body is manufactured from high-grade stainless steel, ensuring corrosion resistance, mechanical strength, and long-term reliability in industrial vacuum environments.

Technical Specifications

Item	Specification
Main Materials	SUS304 (L type), SUS304 (Y, Z type)
Bellows Material	AM-350
Leakage Rate (Hood Section)	< 1.0 × 10⁻¹⁰ Pa·m³/sec
Leakage Rate (Sheet Leakage)	< 1.0 × 10⁻¹⁰ Pa·m³/sec
RoHS2 Compliance	Yes

Typical Applications

The Cosmotec NW50 Manual Type L Bellows Valve is commonly used in:

• Semiconductor manufacturing equipment

• Vacuum chambers and analytical instruments

• Research laboratories and R&D facilities

• Industrial vacuum processing systems

• Vacuum systems requiring reliable isolation and vacuum breaking when combined with leak ports

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