MKS INSTRUMENTS 100018423 Pneumatic Angle Valve

( Brand: Mks Instruments ), ( Manufacturer Part Number: 100018423 ), ( Part Type: Pneumatic Angle Valve )

Review MKS INSTRUMENTS Pneumatic Angle Valve Working Surplus

The **MKS 100018423 Pneumatic Angle Valve** is a high-performance, precision-engineered component designed to deliver reliable and efficient fluid control in demanding industrial, laboratory, and automation applications. This compact yet robust angle valve is engineered with a **pneumatic actuation system**, ensuring seamless and repeatable operation through controlled air pressure, which eliminates the need for manual intervention and reduces human error. The valve features a **3/8" NPT female inlet and outlet connection**, making it versatile for integration into existing piping systems where space is limited, as its angled design optimizes flow dynamics while minimizing installation complexity. Constructed from **high-grade stainless steel (typically 316L or 304)**, the valve body resists corrosion, chemical degradation, and high-pressure environments, ensuring long-term durability even in aggressive or corrosive media such as acids, solvents, or sterile fluids. Its **sealed pneumatic actuator** operates silently and with minimal wear, driven by a **standard 0.4 0.8 MPa (60 120 PSI) air supply**, making it energy-efficient and suitable for automated processes where precision timing is critical.

The valve incorporates a **tight-sealing PTFE or Viton O-ring system**, providing an ultra-low leakage rate ideal for applications requiring strict containment, such as vacuum systems, gas delivery, or pharmaceutical processing. Its **normally closed (NC) or normally open (NO) configuration** (depending on model variant) allows for flexible system design, enabling automatic shutoff or continuous flow as required. The **quick-connect pneumatic fittings** simplify installation and maintenance, reducing downtime, while the **metal-sealed valve stem** prevents cross-contamination and ensures a hermetic seal even under cyclic operation. Additionally, the valve s **compact footprint** and modular design make it an excellent choice for integration into tight spaces, such as analytical instruments, laboratory setups, or automated manufacturing lines where space efficiency is paramount.

Beyond its mechanical robustness, the **MKS 100018423** is engineered for precision control, offering consistent actuation with minimal hysteresis, which is essential for applications requiring exact flow rates or pressure regulation. Its **fail-safe design** whether through mechanical stops or integrated solenoid control ensures predictable performance in critical applications, such as gas chromatography, mass spectrometry, or semiconductor manufacturing. The valve s **compatibility with a wide range of gases and liquids**, including corrosive or cryogenic media, further expands its utility across industries such as aerospace, medical device manufacturing, and environmental monitoring. Whether used in a **high-vacuum system, a chemical process line, or a precision fluid dispensing application**, this pneumatic angle valve delivers dependable, repeatable performance with minimal maintenance, making it a cornerstone component for engineers and operators seeking reliability in automated fluid control systems.

### **Pros and Cons of buying a MKS 100018423 Pneumatic Angle Valve**

1. **High Precision and Reliability** The MKS 100018423 is designed for high-vacuum applications, ensuring consistent performance in critical systems like semiconductor manufacturing, research labs, and industrial processes. Its precision-engineered components minimize leakage and maintain stable operation under demanding conditions.

2. **Compatibility with Vacuum Systems** This valve is specifically engineered for use in vacuum environments, making it ideal for applications where air or gas leakage could compromise system integrity. It integrates seamlessly with MKS and other industry-standard vacuum components.

3. **Durability and Longevity** Constructed with high-quality materials, including stainless steel and specialized seals, the valve is built to withstand repeated cycling, extreme temperatures, and corrosive environments. This reduces maintenance requirements and extends the valve s operational lifespan.

4. **Fast Response Time** The pneumatic actuation mechanism allows for quick opening and closing, which is essential in applications requiring rapid process control, such as gas introduction or exhaust in vacuum chambers.

5. **Low Maintenance** The valve s design minimizes wear on internal components, reducing the need for frequent servicing. When maintenance is required, many parts are easily replaceable, lowering downtime.

6. **Versatility in Applications** Suitable for a wide range of industries, including semiconductor fabrication, medical device manufacturing, and scientific research, where precise control of gases or fluids is necessary.

7. **Compatibility with Control Systems** The valve can be integrated with automated control systems, allowing for remote operation and programming via PLCs or other industrial controllers.

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1. **High Initial Cost** As a specialized vacuum component, the MKS 100018423 is more expensive than standard pneumatic valves. The premium price reflects its precision engineering and reliability, but it may not be cost-effective for low-budget or non-critical applications.

2. **Limited Compatibility with Non-Vacuum Systems** This valve is not designed for general-purpose pneumatic applications (e.g., air compression, hydraulic systems). Attempting to use it in non-vacuum environments could lead to premature failure or poor performance.

3. **Dependence on External Air Supply** Since it is pneumatic, it requires a consistent and properly regulated air supply to operate. Fluctuations in air pressure or contamination in the supply line could affect valve performance.

4. **Potential for Leakage Over Time** While high-quality, seals and gaskets in pneumatic valves can degrade with prolonged use, especially in environments with aggressive chemicals or temperature swings. Regular inspections may be necessary to prevent leaks.

5. **Specialized Installation Requirements** Proper installation, including alignment and sealing, is critical to avoid performance issues. Improper installation by untrained personnel could lead to failures or safety hazards.

6. **Limited Availability of Spare Parts** While MKS offers support, some replacement parts may require ordering from the manufacturer, which could cause delays if not stocked locally.

7. **Training Required for Optimal Use** Operators may need training to ensure the valve is used correctly, particularly in automated or safety-critical systems. Misuse could lead to inefficiencies or equipment damage.

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### **Conclusion**

The **MKS 100018423 pneumatic angle valve** is a high-performance component ideal for precision vacuum applications where reliability, speed, and compatibility with advanced systems are paramount. Its strengths lie in its durability, precision, and integration capabilities, making it a valuable investment for industries like semiconductor manufacturing, research, and medical technology.

However, its high cost, specialized nature, and dependency on proper installation and maintenance may not justify its purchase for general pneumatic applications or budget-conscious projects. If your application demands vacuum integrity, rapid response, and long-term reliability, this valve is a strong choice. For other uses, a more cost-effective or standard pneumatic valve may be more appropriate.

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### **Recommendation**

- You require a **high-precision vacuum valve** for critical applications (e.g., semiconductor fabrication, scientific research, or medical device manufacturing).

- Your system demands **fast, reliable actuation** with minimal leakage.

- You are willing to invest in a **long-term, low-maintenance solution** despite the higher upfront cost.

- Your facility has the **proper air supply and installation expertise** to support the valve.

- Your application does **not** require vacuum conditions, and a standard pneumatic valve would suffice.

- Budget constraints make the **high initial cost** prohibitive.

- Your team lacks **experience with vacuum systems** or specialized pneumatic controls.

- You need **frequent replacements or easy accessibility** to parts, as MKS components may have longer lead times.

For most **industrial or research-grade vacuum systems**, the MKS 100018423 is a **highly recommended** choice due to its performance and reliability. For other uses, evaluate whether the benefits outweigh the costs before purchasing.

Details:

The physical condition is good, but there are signs of previous use and handling. Only items pictured are included: If a part is not pictured, or mentioned above, then it included in the sale. Pictured test equipment is not included or available for sale. Sale Details.

Item condition: Working, 90 Day Warranty. MKS Instruments 100018423 Pneumatic Angle Valve Working Surplus. Estimated Packed Shipping Dimensions: L x W10 x10 7 lbs. Serial numbers or country of manufacture may vary.

Part No: 100018423This item is working surplus.

part #: 100018423 prices

• $553.24-$799.00

specifications valvesplumbing:

• brand: Mks Instruments
• mpn: 100018423
• part type: Pneumatic Angle Valve

seller valvesplumbing:

• # reviews: 10553
• rating: 99.6%
• city: Albuquerque, New Mexico

payments valvesplumbing:

• credit card: Discover
• wallet: Apple-pay
• other

shipping valvesplumbing:

• cost: $0.00
• class: Standard
• service: FedEx Ground / FedEx Home Delivery
• transit: 3-7 Days
• carrier: FedEx
• type: Calculated

general valvesplumbing:

• condition: Used
• Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Other Valves Manifolds

returns valvesplumbing:

• method: Money back
• policy: Returns Accepted
• paid by: Buyer
• time: 60 Days

offer valvesplumbing:

• options: Ship-to-home
• availability: In Stock
• started: May 26, 2026
• sold: 0
• quantity: 1
• best offers: True

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