Product Overview
The KEY HIGH VACUUM KMM-25-P-NSCHEM is a high-precision vacuum isolation valve engineered for demanding process and pneumatic vacuum systems. Manufactured by KEY HIGH VACUUM, a recognized name in vacuum control technology, this valve utilizes a pneumatically actuated, normally-closed (NC) bellows-sealed mechanism to provide reliable on/off isolation of vacuum lines. The KMM-25-P-NSCHEM is designed with a 25 mm nominal port size and is constructed from vacuum-compatible materials to minimize outgassing and particulate contamination. It serves as a critical control component in industrial vacuum networks, ensuring tight shutoff, rapid response, and long service life in continuous-duty applications.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Process & Pneumatic Vacuum Valve |
| Model Designation | KMM-25-P-NSCHEM |
| Nominal Port Size | 25 mm (DN25 / KF25 compatible) |
| Actuation Type | Pneumatic, Normally Closed (NC) |
| Operating Pressure Range | Vacuum service (typically 10⁻⁶ to 10⁻³ mbar range) |
| Seal Material | Vacuum-grade elastomer (Viton / FKM equivalent) |
| Body Material | Stainless Steel (304/316L grade) |
| Mounting & Connection | Standard ISO KF / NW flange interface |
| Leak Rate | < 1 × 10⁻⁹ mbar·L/s (helium) |
| Response Time | Fast pneumatic actuation (sub-second typical) |
Engineering Features & Advantages
- Precision Vacuum Control: Bellows-sealed stem design ensures zero external leakage and minimal internal outgassing, maintaining system integrity in high-vacuum processes.
- Pneumatic Actuation Reliability: Normally-closed configuration provides fail-safe operation, automatically isolating the vacuum line upon loss of actuation air pressure.
- Industrial Reliability: Constructed from corrosion-resistant stainless steel and vacuum-compatible elastomers, built for continuous operation under severe industrial conditions.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original KEY HIGH VACUUM KMM series mounting and port standards.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original KEY standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
It serves as a critical control component in industrial vacuum networks, ensuring tight shutoff, rapid response, and long service life in continuous-duty applications.
PRODUCT IMAGES




KEY HIGH VACUUM KMM-25-P-NSCHEM Vacuum Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
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