Product Description
Varian VPI251205060UL Vacuum Pump Isolation Valve – NW25 Manual Valve
This used Varian VPI251205060UL is a manual isolation valve designed for vacuum pump systems. It provides positive shut-off between the vacuum pump and the chamber, allowing the pump to be isolated for maintenance or to prevent back-streaming of pump fluids into the vacuum system.
Varian (now part of Agilent Technologies) is a trusted name in vacuum technology, known for reliable pumps, valves, and components for high and ultra-high vacuum applications.
Key Features & Specifications
| Specification | Details |
|---|---|
| Manufacturer | Varian (now Agilent) |
| Part Number | VPI251205060UL |
| Type | Vacuum isolation valve |
| Flange Type | NW25 (KF-25) compatible |
| Actuation | Manual (hand-operated) |
| Seal Material | Viton (fluorocarbon) – suitable for high-vacuum applications |
| Function | Isolates vacuum pump from chamber |
| Body Material | [aluminum] |
| Leak Rate | <1.3 x 10⁻⁹ mbar L/s (typical for Varian valves) |
| Pressure Range | [10⁻⁹ mbar to 2 bar differential] |
Application
-
Vacuum Pump Isolation: Allows pump maintenance without venting the entire system
-
Roughing Lines: Isolation in foreline and roughing pump applications
-
Hi-Vac Systems: Secondary isolation in high-vacuum pumping stacks
-
Research Labs: General-purpose vacuum system control
-
Semiconductor Processing: Clean vacuum isolation in production tools
-
Analytical Instruments: Mass spectrometers, electron microscopes, surface analyzers
Condition
SOLD AS IS
USED – SHOWS NORMAL WEAR (scuffs, minor marks)
NO ACTUATOR OR ACCESSORIES INCLUDED (unless specified)
PICTURE MAY NOT MATCH PRODUCT
⚠ VACUUM NOTE: Used vacuum valves should be inspected for seal integrity before installation in critical systems. Proper operation should be verified.
| Weight | 8 lbs |
|---|---|
| Dimensions | 16 × 10 × 8 in |
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