MASONEILAN 32-36415 Svi Pneumatic Control Valve SVI2 8IN 150

( Brand: Masoneilan ), ( Manufacturer Part Number: 32-36415 ), ( Part Type: Pneumatic Control Valve ), ( Positioner Model : Svi2 Svi-ii ), ( Size: 8 In ), ( Actuation Type: Pneumatic ), ( Class: 150 ), ( Material: Stainless ), ( Mounting Type: Flanged ), ( Reference Sku: 1762522 ), ( Product Condition: Used Excellent )

Review MASONEILAN Svi ii Pneumatic Stainless Control Valve 8in 150

The **Masoneilan 32-36415 SVII/SVI-II Pneumatic Control Valve (8" Class 150)** is a robust, high-performance globe-style control valve engineered for precise flow regulation in demanding industrial applications. Part of Masoneilan s renowned **SVII/SVI-II series**, this valve combines advanced pneumatic actuation with a durable metal-seated design to deliver exceptional reliability, efficiency, and long-term durability. Built to ANSI Class 150 standards, it is constructed from high-quality materials, including a forged carbon steel body and trim components, ensuring resistance to corrosion, wear, and thermal cycling in environments ranging from cryogenic to high-temperature service. The **8-inch nominal size** makes it ideal for medium to large-scale systems requiring precise control of liquids, gases, or steam, such as in power generation, chemical processing, water treatment, and HVAC systems.

The valve features a **pneumatic diaphragm actuator** with a **fail-safe position** (either fail-open or fail-close, configurable via the pilot), providing reliable operation even under power loss or system failures. The **SVII/SVI-II design** incorporates a **quick-acting, balanced plug** that minimizes torque and wear, reducing maintenance requirements while maintaining tight shutoff and superior throttling performance. The **metal-to-metal seat** ensures leak-tight sealing under high differential pressures, making it suitable for critical applications where process integrity is paramount. Additionally, the valve s **modular construction** allows for easy field servicing, with replaceable internals that extend the valve s operational lifespan without requiring full replacement.

For enhanced control and monitoring, the **32-36415** is compatible with Masoneilan s **Electronic Positioner (EP)** and **Pneumatic Positioner (PP)** systems, enabling precise flow regulation, position feedback, and integration with distributed control systems (DCS). The valve s **standard flanged connections** (RF or RTJ, depending on configuration) ensure compatibility with existing piping systems, while its **anti-blowout stem** and **packing gland** design prevent leaks and ensure safe operation under high-pressure conditions. Whether deployed in a utility plant, refinery, or large-scale industrial facility, this valve delivers **consistent, repeatable control** with minimal maintenance, making it a trusted choice for engineers and operators demanding both performance and longevity.

### **Pros and Cons of buying a Masoneilan 32-36415 SVI-II Pneumatic Control Valve (8" Class 150)**

1. **High-Quality Brand Reputation**

Masoneilan is a well-established manufacturer in the process control industry, known for durable, reliable, and high-performance control valves. Their products are widely used in oil, gas, chemical, and water treatment applications, ensuring long-term dependability.

2. **Pneumatic Actuation for Precise Control**

The valve features a pneumatic diaphragm actuator, which provides smooth and precise control of flow rates. This is ideal for applications requiring gradual adjustments, such as pressure regulation, level control, or throttling services.

3. **Class 150 Flange Rating**

The valve is rated for **Class 150** pressure, meaning it can handle moderate to high-pressure applications (up to **300 psi at 600 F**). This makes it suitable for many industrial processes without requiring heavy-duty or exotic materials.

4. **8" Size for Large Flow Applications**

An **8-inch diameter** valve is designed for high-capacity flow control, making it suitable for large pipelines in water treatment, wastewater systems, or chemical processing where significant flow rates are required.

5. **SVI-II Trim Configuration**

The **SVI-II trim** (Single Valve Insert, Improved) is a robust design that minimizes wear and reduces maintenance needs. It is optimized for throttling service, providing better flow characteristics and longevity compared to standard trims.

6. **Corrosion-Resistant Materials (Standard Options)**

The valve is typically constructed with **carbon steel** as the base material, which is cost-effective and widely available. However, it can be upgraded with **stainless steel, alloy steel, or other corrosion-resistant materials** depending on the application, ensuring compatibility with aggressive fluids.

7. **Modular Design for Easy Maintenance**

The valve s modular construction allows for quick replacement of internal components (such as the trim or diaphragm) without dismantling the entire assembly, reducing downtime.

8. **Compatibility with Standard Pneumatic Systems**

The pneumatic actuator is designed to work with standard **3-15 psi air signals**, making it easy to integrate with existing control systems (e.g., PLCs, DCS, or manual pneumatic controllers).

9. **Wide Range of End Connections**

The valve can be supplied with various flange connections (e.g., **RF, RTJ, or butt-weld ends**), providing flexibility in system integration.

10. **Backed by Technical Support & Warranty**

Masoneilan offers **technical documentation, installation guides, and customer support**, ensuring proper operation and troubleshooting. Many suppliers also provide warranties, reducing long-term risk.

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1. **Higher Upfront Cost Compared to Generic Valves**

As a **brand-name valve**, the Masoneilan 32-36415 SVI-II is more expensive than generic or aftermarket alternatives. For budget-sensitive projects, this may be a significant drawback.

2. **Potential Overkill for Low-Pressure or Low-Flow Applications**

If the application involves **low-pressure (below 100 psi) or very small flow rates**, an 8" valve may be unnecessarily large, leading to higher costs without proportional benefits.

3. **Maintenance Requirements**

While the **SVI-II trim** reduces wear, pneumatic actuators and diaphragms still require periodic inspection and replacement. Failure to maintain them can lead to **leaks, reduced accuracy, or complete failure**.

4. **Limited Material Options (Unless Specified)**

The standard **carbon steel body** may not be suitable for **highly corrosive or abrasive fluids** (e.g., seawater, strong acids, or slurries). Upgrading to **stainless steel or exotic alloys** increases cost significantly.

5. **Actuator Air Consumption**

Pneumatic actuators require a **steady air supply**, and if the system lacks proper filtration or pressure regulation, the actuator may **wear out faster** or malfunction.

6. **Longer Lead Times for Custom Configurations**

If special modifications (e.g., **custom trim, non-standard flanges, or electrical positioners**) are required, ordering times may extend beyond standard stock valves.

7. **Potential for Over-Engineering in Simple Systems**

If the application does not require **precise throttling** (e.g., simple on/off service), a simpler **ball valve or globe valve** might suffice at a lower cost.

8. **Dependence on Skilled Installation**

Improper installation (e.g., **misaligned flanges, incorrect actuator mounting, or improper piping**) can lead to **leaks, valve damage, or poor performance**. Requires trained personnel.

9. **Limited Availability of Spare Parts in Some Regions**

While Masoneilan is global, **spare parts availability** may vary by region, potentially causing delays in maintenance or repairs.

10. **Noise and Vibration in Throttling Service**

When used in **high-differential pressure throttling**, the valve may generate **noise and vibration**, requiring additional damping measures (e.g., **silencers or snubbers**).

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### **Conclusion**

The **Masoneilan 32-36415 SVI-II 8" Class 150 pneumatic control valve** is a **high-quality, reliable, and precise** solution for **large-scale flow control applications** where **durability, accuracy, and long-term performance** are critical. It excels in **industrial process control, water/wastewater treatment, and chemical processing** where **throttling, pressure regulation, or level control** is required.

- **Low-pressure or small-flow applications** (where a smaller valve would suffice).

- **Budget-constrained projects** (due to higher upfront cost).

- **Highly corrosive or abrasive environments** (unless upgraded with specialty materials).

- **Simple on/off service** (where a ball or plug valve would be more cost-effective).

If the application **matches its specifications** (e.g., **8" flow requirement, Class 150 pressure, pneumatic control needs**), the **Masoneilan valve is a strong recommendation** due to its **reputation, modularity, and long service life**.

---

### **Final Recommendation**

You need **reliable, high-performance throttling** in an **8" pipeline**.

Your application involves **moderate to high pressure (up to 300 psi)**.

You require **precise flow control** in **water treatment, oil & gas, or chemical processing**.

You can **afford the premium cost** and have **proper maintenance procedures** in place.

The application is **low-pressure or small-flow** (evaluate a **smaller valve**).

The budget is **strictly limited** (compare with **generic or aftermarket valves**).

The fluid is **highly corrosive or abrasive** (ensure **material upgrades** are specified).

The system requires **simpler on/off control** (a **ball or plug valve** may be better).

- **Verify exact pressure, temperature, and fluid compatibility** with the valve specs.

- **Confirm actuator air supply requirements** (filtration, pressure regulation).

- **Check local availability of spare parts** to avoid future delays.

- **Ensure proper installation training** is provided to maintenance staff.

For most **industrial process control applications requiring an 8" throttling valve**, the **Masoneilan 32-36415 SVI-II remains a top-tier choice** due to its **proven reliability and performance**.

Details:

Pneumatic Cylinders. Pneumatic Filter-Regulators. Actuation Type:Pneumatic. Pneumatic Filters.

Pneumatic Relays. Positioner model #:SVI2 SVI-II. Pneumatic Directional Valves. Pneumatic Exhaust Valves.

part #: 3236415 prices

• $899.00-$4000.00

specifications valvesplumbing:

• brand: Masoneilan
• mpn: 32-36415
• part type: Pneumatic Control Valve
• positioner model : Svi2 Svi-ii
• size: 8 In
• actuation type: Pneumatic
• class: 150
• material: Stainless
• mounting type: Flanged
• reference sku: 1762522
• product condition: Used Excellent

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• paid by: Buyer
• policy: Returns Accepted
• time: 30 Days
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seller valvesplumbing:

• rating: 100.0%
• # reviews: 127497
• city: Delta, Ohio

offer valvesplumbing:

• options: Ship-to-home
• started: April 22, 2026
• best offers: True
• quantity: 1
• availability: In Stock
• sold: 0

general valvesplumbing:

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

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