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  • Air Admittance Isolation Valve KF25 304 Bellow High Vacuum Manual Right Angle Corrugated Tube Gas High Temperature
  • Air Admittance Isolation Valve KF25 304 Bellow High Vacuum Manual Right Angle Corrugated Tube Gas High Temperature
  • Air Admittance Isolation Valve KF25 304 Bellow High Vacuum Manual Right Angle Corrugated Tube Gas High Temperature
  • Air Admittance Isolation Valve KF25 304 Bellow High Vacuum Manual Right Angle Corrugated Tube Gas High Temperature
  • Air Admittance Isolation Valve KF25 304 Bellow High Vacuum Manual Right Angle Corrugated Tube Gas High Temperature
  • Air Admittance Isolation Valve KF25 304 Bellow High Vacuum Manual Right Angle Corrugated Tube Gas High Temperature
Air Admittance Isolation Valve KF25 304 Bellow High Vacuum Manual Right Angle Corrugated Tube Gas High Temperature
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Air Admittance Isolation Valve KF25 304 Bellow High Vacuum Manual Right Angle Corrugated Tube Gas High Temperature

$30.00-$55.00/ Set|1 Set/Sets(Min. Order)
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Air Admittance Isolation Valve KF25 304 Bellow High Vacuum Manual Right Angle Corrugated Tube Gas High Temperature

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • High Vacuum Control: Designed to regulate airflow and maintain vacuum environments with precision, ideal for applications requiring isolation or pressure equilibrium.
  • Right-Angle Bellow Isolation: Facilitates space-efficient installation while ensuring contamination-free operation through its corrugated tube and bellows design.

Key features

  • 1. Material Technology

    • With a corrosion-resistant 304 stainless steel body and bellow isolation design, you can maintain structural integrity and prevent leaks in high-pressure or corrosive environments. Stainless steel ensures durability, while the bellow isolation enhances vacuum performance by minimizing gas leakage.

  • 2. Interactive Design

    • With a manual right-angle knob and threaded shaft, you can achieve precise flow adjustments in tight spaces compared to traditional straight valves. The ergonomic design allows easy operation even in confined industrial setups.

  • 3. Performance Parameters

    • With high vacuum pressure compatibility, you can handle extreme low-pressure conditions more effectively than standard valves* [*Disclaimer: Based on internal testing; actual results may vary]. The corrugated tube design ensures stable performance under vacuum applications.

  • 4. Scenario Solutions

    • Designed for industrial and scientific applications, you can ensure reliable isolation in high-pressure systems or hazardous material handling scenarios. Ideal for use in chemical processing, pharmaceutical manufacturing, or lab environments requiring precise fluid control.

  • 5. Certification Standards

    • With compliance to industry standards for vacuum systems, you can meet safety and efficiency requirements in regulated environments* [*Disclaimer: Certifications subject to manufacturer confirmation]. The material and design align with common specifications for cleanroom and high-risk industrial use.

Product details

Air Admittance Isolation Valve KF25 304 Bellow High Vacuum Manual Right Angle Corrugated Tube Gas High Temperature

The KF25 304 Stainless Steel High Vacuum Manual Right Angle Corrugated Tube Valve is a precision-engineered solution for high-vacuum applications requiring reliable isolation and airflow control. Designed with corrosion-resistant 304 stainless steel and a bellow seal, it ensures leak-free performance in demanding environments like laboratory, pharmaceutical, and semiconductor settings.

Technical specifications

FeatureSpecificationBenefit
Material304 Stainless SteelCorrosion resistance and high-pressure tolerance
DesignRight-angle corrugated tube, manual knobSpace-saving installation and precise manual control
SealingBellows isolation mechanismZero-leak vacuum integrity
Pressure RatingHigh vacuum (down to 1x10⁻⁶ mbar)Ideal for ultra-high vacuum systems
Media CompatibilityAir, GasSafe for non-corrosive gases and clean fluids
Connection TypeKF25 FlangeStandard industrial interface compatibility

Customization guide

Adjustable parameters:

  • Material coating (e.g., electropolished finish for ultra-clean applications)
  • Connection flange size (KF16/KF40 adaptable)
  • Actuation mechanism (motorized option for automated systems)

Get inspired

Optimize your vacuum system with this valve’s right-angle design, which reduces space constraints while maintaining structural integrity. Its bellow seal ensures no particulate contamination, making it perfect for cleanroom or semiconductor fabrication workflows.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Vacuum Pressure1x10⁻³ mbar1x10⁻⁵ mbar1x10⁻⁶ mbar*
Corrosion ResistanceASTM A240 (standard)ASTM A240 + passivation316L Stainless Steel
Flow Rate50 SLPM80 SLPM120 SLPM
Weight1.2 kg1.5 kg1.8 kg (reinforced frame)

Supplier's note

  1. Technical Breakthroughs:

    • Bellows Isolation: Achieves 100% leak prevention in ultra-high vacuum (UHV) scenarios, surpassing O-ring seals by eliminating outgassing.
    • Right-Angle Design: Reduces installation space by 20% compared to straight valves, ideal for crowded lab setups.
    • 304 Stainless Steel: Meets FDA and ISO 9001 standards, enabling use in food/pharma environments without cross-contamination risks.

  2. Version Selection Guidance:

    • Base Model: Suitable for basic lab or HVAC systems requiring standard vacuum levels (e.g., academic research).
    • Advanced Model: Recommended for semiconductor cleanrooms or analytical instrumentation needing low-pressure precision.
    • Pro Model: Essential for aerospace testing or UHV chambers where triple-industry-standard corrosion resistance (316L) and minimal outgassing are critical.

With the Pro Model’s 1x10⁻⁶ mbar vacuum rating, you can achieve ultra-high purity environments required for electron microscopy. Pair its bellow seal with 316L material to ensure decades of service in corrosive chemical processing.

Frequently asked questions

  • Which Air Admittance Valve KF25 model is best for laboratory vacuum systems?

  • How do I maintain the seals of a stainless steel high vacuum manual valve?

  • Stainless Steel vs Brass: Which material is better for high vacuum valves?

  • Can the KF25 isolation valve be customized for specific vacuum system setups?

  • Is the 304 stainless steel bellow isolation valve FDA-approved for medical use?

  • What makes the right-angle design of this high vacuum valve suitable for tight spaces?

  • How does the manual operation of this isolation valve ensure precise vacuum control?

  • Which industries benefit most from using a KF25 corrugated tube vacuum valve?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Air Admittance Valve (KF25)Plumbing systems, vacuum applicationsMaterial: 304 Stainless Steel (ASTM A240)
Pressure: -1 bar vacuum (▲1 vs Industry Standard)
Bellow Isolation (ISO 9001)		Corrosion-resistant, leak-proof seal, manual operation simplicityLimited to low-pressure systems, requires manual adjustment
Ball ValveOn-off control in pipelinesQuarter-turn operation (ISO 5211)
Pressure: Up to 420 bar (▲2 vs Air Admittance)		Rapid shut-off, minimal pressure drop, bidirectional sealingNot ideal for precise flow control, higher cost for high-pressure variants
Gate ValveFull bore flow regulationLinear gate design (API 600)
Pressure: 150 bar (▲0.5 vs Industry Standard)		Zero flow restriction when open, bi-directional compatibilitySlow operation, unsuitable for partial openings, prone to leakage if worn
Butterfly ValveHigh-flow industrial systemsWafer-style design (ANSI F4-1)
Pressure: 10 bar (▲-1 vs Ball Valve)		Compact size, low cost, quick operationLimited pressure tolerance, not suitable for abrasive fluids
Diaphragm ValveChemical processing, sanitary systemsFlexible rubber diaphragm (FDA-compliant)
Pressure: 6 bar (▲-0.5 vs Standard)		Full isolation, no dead zones, chemical resistanceLimited pressure capacity, frequent diaphragm replacement needed
Check ValveBackflow prevention in pumpsSpring-loaded mechanism (ASME B16.34)
Pressure: 250 bar (▲3 vs Butterfly Valve)		Zero backflow risk, automatic operationHigh pressure drop, requires regular maintenance for spring integrity

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The comparison data is based on manufacturer information and industry standards. Actual results may vary depending on individual use cases. It is advisable to verify details with the supplier for the most accurate information.