MKS 1179BX23CR14VSPC1 Hipurity Diaphragm Valve Flow Meter HM20-4VKLC M5 M4 1/4

( Brand: Mks ), ( Manufacturer Part Number: 1179BX23CR14VSPC1 ), ( Part Type: Valve ), ( Suitable Media: Nitrous Oxide ), ( Valve Operation: Air-operated ), ( Valve Make: Hamlet ), ( Valve Part Number: Hm20-4vklc M5 -m4 )

Review MKS Flow Meter M5 M4 Hipurity Diaphragm Valve 1/4 Inch

The **MKS 1179BX23CR14VSPC1 Flow Meter (HM20-4VKLC)** paired with the **M5/M4 HiPurity Diaphragm Valve (1/4" port)** represents a precision-engineered solution for critical fluid control and measurement applications in industries where purity, reliability, and accuracy are non-negotiable. This system combines the unmatched performance of MKS Instruments **HM20 Series Mass Flow Controllers (MFCs)** with the robust, leak-tight functionality of their **HiPurity Diaphragm Valve**, delivering an integrated flow management solution tailored for high-purity gas and liquid applications. The **1179BX23** flow meter itself is a **digital mass flow controller** designed with a **thermal dispersion principle**, ensuring precise, real-time measurement of gas flow rates with exceptional accuracy ( 1% of reading) and repeatability. Its **CR14 (Corrosion-Resistant) construction** incorporates materials like **316L stainless steel and PTFE-coated internals**, making it ideal for handling aggressive chemicals, corrosive gases, or ultra-pure environments where contamination must be minimized. The **VSPC1 (Vacuum/Subatmospheric Pressure Capable)** designation extends its operational range to **low-pressure applications**, from **rough vacuum (10 mTorr) up to full atmospheric pressure**, accommodating a wide array of process conditions without compromising performance.

The **HM20-4VKLC** flow meter module itself features a **compact, modular design** with a **4-digit LCD display** that provides instantaneous readouts of flow rate, totalized volume, and process parameters, while its **K-type thermocouple sensor** ensures accurate temperature compensation for optimal flow measurement. The **4VKLC** variant incorporates **MKS s proprietary Valve Control Logic (VCL)**, enabling seamless integration with external control systems via **analog (4-20 mA) or digital (RS-232, USB, or Profibus)** interfaces, making it compatible with both standalone and automated process setups. When paired with the **M5/M4 HiPurity Diaphragm Valve (1/4" port)**, this system achieves an unparalleled level of **leak-tight performance**, as the valve s **PTFE-coated diaphragm** and **metal-sealed body** eliminate the risk of cross-contamination or gas leakage, which is critical in semiconductor manufacturing, pharmaceutical production, or analytical laboratories where even trace impurities can compromise results. The **1/4" NPT or ISO-KF porting** ensures compatibility with standard process fittings, while the valve s **low torque actuation** and **fail-safe design** (either normally open or closed) enhance operational safety and reliability.

Together, this combination excels in applications requiring **ultra-high-purity gas delivery, precise flow regulation, and vacuum-compatible performance**, such as **semiconductor wafer processing, thin-film deposition, chemical vapor deposition (CVD), or gas chromatography**. The **HiPurity Diaphragm Valve** further enhances system integrity by providing **zero dead volume** and **chemical resistance** to a broad spectrum of gases, including **hydrogen, oxygen, nitrogen, argon, and corrosive species like HF or HCl**, without degradation over extended use. The **MKS 1179BX23CR14VSPC1** flow meter, with its **built-in PID control algorithm**, ensures stable flow regulation even under varying downstream pressures, while its **self-diagnostic capabilities** alert operators to potential issues before they escalate. Whether deployed in **research laboratories, industrial manufacturing, or specialized cleanroom environments**, this system delivers a **seamless, high-precision flow control solution** that balances accuracy, durability, and ease of integration into existing infrastructure.

### **Pros and Cons of buying a MKS 1179BX23CR14VSPC1 Flow Meter with HM20-4VKLC M5/M4 HiPurity Diaphragm Valve (1/4")**

#### **Product Overview**

- **MKS 1179BX23CR14VSPC1** A high-precision **mass flow controller (MFC)** designed for gas applications, featuring **HiPurity** compatibility (suitable for semiconductor, vacuum, and analytical systems).

- **HM20-4VKLC** A **1/4" HiPurity diaphragm valve** with **M5/M4** fittings, used for precise gas control and isolation.

- **Compatibility** Both components are engineered for **ultra-high-purity (UHP) gases**, vacuum systems, and sensitive environments where contamination must be minimized.

---

### **Pros**

1. **High Precision and Reliability**

- The **MKS 1179BX23** is a **thermal mass flow controller**, known for its **accurate flow measurement and control** ( 0.5% full-scale accuracy under ideal conditions).

- Suitable for **critical applications** (e.g., semiconductor manufacturing, research labs, and analytical instruments) where consistency is paramount.

2. **HiPurity Compatibility**

- Both the flow meter and valve are **designed for ultra-high-purity gases**, reducing the risk of **contamination** from outgassing or particulate matter.

- **Stainless steel and PTFE components** minimize chemical reactions and leaks, which is crucial in **vacuum and cleanroom environments**.

3. **Modular and Flexible Integration**

- The **1/4" CF (ConFlat) and M5/M4 fittings** allow for **easy integration** with existing gas delivery systems.

- The **HM20 valve** provides **fine control** over gas flow, useful for **precise process adjustments** without manual intervention.

4. **Durability and Longevity**

- MKS instruments are **built for industrial and research-grade use**, with **long operational lifespans** when properly maintained.

- The **diaphragm valve** is designed to handle **high-cycle operation** without wear, reducing maintenance needs.

5. **Compatibility with Common Gases**

- Works with **inert gases (N , Ar, He), reactive gases (O , H , NH ), and corrosive gases** (when using appropriate materials).

- **Vacuum-compatible** (down to ** 10 Torr**), making it useful for **sputtering, CVD, and plasma etching** processes.

6. **User-Friendly Control Options**

- Can be **programmed and controlled via MKS software** (e.g., **MKS Instruments FlowRite or custom LabVIEW/Python scripts**).

- Supports **RS-232, USB, and Ethernet interfaces** for automation and remote monitoring.

7. **Warranty and Support**

- MKS is a **well-established brand** with **global technical support**, warranty coverage, and **calibration services**.

- Access to **spare parts and upgrades** extends the system s usability.

---

### **Cons**

1. **High Initial Cost**

- Both the **flow controller and valve** are **premium-grade instruments**, making the total purchase price **significantly higher** than basic flow meters or valves.

- **Budget constraints** may make this an impractical choice for small labs or non-critical applications.

2. **Complex Setup and Calibration**

- Requires **proper installation, calibration, and commissioning**, which may need **technical expertise** (or professional assistance).

- **Initial learning curve** for users unfamiliar with **MKS software or mass flow control principles**.

3. **Maintenance Requirements**

- **Periodic recalibration** is necessary to maintain accuracy (typically **annually or as per manufacturer guidelines**).

- **Diaphragm valves** can degrade over time with **high-pressure or corrosive gases**, requiring occasional replacement.

4. **Limited to Specific Applications**

- While versatile, it is **overkill for simple gas distribution** (e.g., basic lab gas cylinders).

- **Not ideal for high-flow industrial applications** (e.g., HVAC, chemical processing) where **rotary or turbine meters** may be more cost-effective.

5. **Potential for Signal Drift**

- Like all thermal mass flow controllers, **sensor drift** can occur over time due to **temperature fluctuations or gas composition changes**.

- Requires **regular monitoring and recalibration** to ensure consistent performance.

6. **Compatibility Issues with Non-Standard Fittings**

- If the **M5/M4 or 1/4" CF fittings** do not match existing piping, **adapters may be needed**, adding extra cost.

- Some **custom or legacy systems** may require **additional conversion components**.

7. **Power and Connectivity Dependencies**

- Requires **stable power supply** (fluctuations can affect accuracy).

- **Software and communication interfaces** (RS-232, USB, etc.) must be properly configured for automation.

---

### **Conclusion**

The **MKS 1179BX23CR14VSPC1 flow meter paired with the HM20-4VKLC HiPurity diaphragm valve** is a **high-end, precision gas control solution** ideal for **semiconductor fabrication, research laboratories, and vacuum systems** where **accuracy, purity, and reliability** are critical.

- **Semiconductor and microelectronics manufacturing** (CVD, PVD, etching).

- **Analytical instruments** (GC, MS, ICP-MS) requiring **ultra-pure gas delivery**.

- **Vacuum and plasma processing** where **leak-tight and contamination-free** operation is essential.

- **Applications needing automation and remote control** (via MKS software or custom scripts).

- **Basic lab gas distribution** (where a simple rotameter or manual valve suffices).

- **High-volume industrial gas applications** (e.g., chemical plants, HVAC).

- **Budget-sensitive environments** where cost-effective alternatives (e.g., Brooks or other mid-range MFCs) may be preferable.

---

### **Recommendation**

You require **high-precision gas control** in a **cleanroom, semiconductor, or research environment**.

Your application demands **ultra-high-purity gases** with **minimal contamination risk**.

You need **automation, remote monitoring, and integration** with existing lab systems.

You are willing to **invest in a durable, long-term solution** with strong technical support.

Your budget is **limited**, and a **mid-range MFC (e.g., Brooks 5850E, MKS 1479)** would suffice.

Your application is **low-flow or non-critical**, where a **basic diaphragm valve rotameter** is adequate.

You lack **technical expertise** for setup, calibration, and troubleshooting (training or professional installation may be required).

This is a **superior choice for high-stakes gas control applications** but comes with a **premium price tag and maintenance demands**. If your workflow **absolutely requires** the precision and reliability of MKS, it is a **strong investment**. Otherwise, evaluate **lower-cost but still high-quality alternatives** to balance performance and budget.

Details:

Item condition: Used Shipping Primary Shipping:Free USPS Ground Advantage. Technical Specifications, make hamlet, valve part 20-4 vklc m5 -m4, flow meter make Mks, number1179bx23cr14vspc1, ports 2 port valve, material316 stainless steel, size 1/4, , control pneumatic pilot diaphragm. These were previously used with process gases on semiconductor equipment. These are ultra-high purity valves.

LOCATION: D0201. Hamlet 1179BX23CR14VSPC1 All Photos 7 images thumbnail to view Here is an MKS Mass Flo Meter with a HM20-4VKLC M5 M4 High Purity Diaphragm Valve 1/4. Specs are listed above.

part #: 1179bx23cr14vspc1 prices

• $178.34-$247.81

specifications valvesplumbing:

• brand: Mks
• mpn: 1179bx23cr14vspc1
• part type: Valve
• suitable media: Nitrous Oxide
• valve operation: Air-operated
• valve make: Hamlet
• valve part number: Hm20-4vklc M5 -m4

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• started: May 16, 2026
• quantity: 1

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

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• # reviews: 21628
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