GHIBSON N500S-16 Pipe Ductile Iron Body Butterfly Valve

( Brand: Ghibson ), ( Manufacturer Part Number: N500S-16 ), ( Part Type: Pipe Valve )

Review GHIBSON In Pipe Size Ductile Iron Body Butterfly Valve

The **Gibson N500S-16 16" Ductile Iron Body Butterfly Valve** represents the pinnacle of engineered precision and durability in fluid control systems, meticulously designed for demanding industrial applications where reliability and performance are non-negotiable. Crafted from high-quality **ductile iron (GGG-40)**, this robust valve body ensures exceptional resistance to corrosion, abrasion, and mechanical stress, making it ideal for harsh environments such as wastewater treatment plants, municipal water distribution networks, chemical processing facilities, and large-scale HVAC systems. The **16-inch (400 mm) nominal size** accommodates high-flow rates with minimal pressure drop, thanks to its **full-port design**, which allows for unobstructed fluid passage when fully open eliminating turbulence and reducing energy consumption in large-scale piping systems.

At the heart of this valve lies a **resilient seat system**, typically composed of **EPDM or Nitrile rubber**, engineered for superior sealing performance across a wide range of temperatures and media, including potable water, sewage, acids, and mild chemicals. The **double-offset (DO) disc mechanism** ensures smooth, low-torque operation with minimal friction, even at high pressures, while the **lug-type flange connection** (standardized to ANSI B16.1 or DIN specifications) provides a secure and leak-proof interface with the piping system. This design not only simplifies installation but also allows for easy removal of the valve for maintenance without disrupting the entire pipeline. The **actuator-compatible shaft** is designed to accommodate a variety of manual, pneumatic, or electric actuators, offering flexibility for automated control in large-scale operations where remote operation is critical.

The **N500S-16** is built to meet stringent industry standards, including **ASTM A536 Class 65 ductile iron**, **ANSI/FIBC Class 150 or 300 pressure ratings**, and **NSF/ANSI 61 certification for potable water applications**, ensuring compliance with the most rigorous regulatory requirements. Its **fire-safe design** (when specified with appropriate seat materials) makes it suitable for critical fire protection systems, where reliability under extreme conditions is paramount. Additionally, the valve s **low-maintenance construction** featuring a lubricated stem and corrosion-resistant internals extends operational lifespan, reducing downtime and long-term costs. Whether deployed in a municipal water treatment facility, an industrial cooling system, or a large-scale irrigation network, the **Gibson N500S-16** delivers consistent, dependable performance, embodying the perfect blend of strength, efficiency, and engineering excellence.

### Pros and Cons of Buying a **Gibson N500S-16 16" Pipe Ductile Iron Body Butterfly Valve**

1. **Durability and Longevity** Ductile iron bodies are known for their strength and resistance to corrosion, making this valve suitable for long-term use in harsh environments, including water, wastewater, and industrial applications.

2. **High Flow Capacity** The 16" size ensures minimal pressure drop, allowing for efficient fluid flow in large pipelines, which is beneficial for high-volume systems.

3. **Rugged Construction** The N500S series is designed for heavy-duty applications, including underground installations, where resistance to ground movement and external forces is critical.

4. **Standardized Design** Gibson valves follow industry standards (e.g., AWWA C504), ensuring compatibility with existing infrastructure and ease of maintenance.

5. **Low Maintenance** Butterfly valves of this type typically require less frequent maintenance compared to globe or gate valves, reducing downtime.

6. **Versatility** Can be used in various media, including water, sewage, chemicals (within specified limits), and industrial fluids, depending on the trim material.

7. **Quick Opening/Closing** The butterfly design allows for rapid actuation, which is useful in emergency shutoff scenarios.

8. **Wide Availability of Accessories** Actuators, positioners, and other control devices are readily available for automation and remote operation.

9. **Cost-Effective for Large Pipes** While the upfront cost may be higher than smaller valves, the durability and performance justify the investment for critical 16" pipelines.

10. **Resistance to Cavitation and Erosion** Properly specified trim materials (e.g., stainless steel, hard-faced seats) can prevent damage from abrasive particles.

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1. **Higher Initial Cost** Compared to smaller valves or alternative materials (e.g., PVC or steel), ductile iron butterfly valves for large pipes can be expensive upfront.

2. **Weight and Installation Complexity** The 16" size and ductile iron construction make the valve heavy, requiring robust installation supports and potentially specialized labor.

3. **Limited Temperature Range** Standard ductile iron valves may have temperature restrictions (typically -20 F to 250 F/-29 C to 121 C), depending on the trim and gasket materials. Extreme temperatures may require special configurations.

4. **Potential for Leakage Over Time** Seats and gaskets can degrade with age or improper maintenance, leading to minor leaks that may require replacement.

5. **Actuation Considerations** While quick to operate, some actuators (especially pneumatic or electric) may require additional power sources and maintenance.

6. **Space Requirements** The valve s size may not fit in tight installation spaces, requiring careful planning during pipeline design.

7. **Trim Material Dependence** Performance (e.g., resistance to corrosion or abrasion) heavily depends on the internal trim (e.g., stainless steel, elastomer seats). Cheaper trims may fail prematurely in harsh conditions.

8. **Backflow Risk** Like all butterfly valves, improper installation or damaged seats can lead to backflow, which may require additional check valves in some applications.

9. **Limited Customization** While Gibson offers standard configurations, highly specialized applications (e.g., extreme pressures or exotic media) may require custom modifications, increasing costs.

10. **Potential for Vibration in High-Flow Systems** In some cases, rapid flow changes can cause valve vibration, which may require damping mechanisms or additional support.

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The **Gibson N500S-16 16" ductile iron butterfly valve** is an excellent choice for **large-scale, high-durability applications** where reliability, flow efficiency, and resistance to corrosion are prioritized. Its strengths in durability, flow capacity, and standardized design make it ideal for municipal water/wastewater systems, industrial pipelines, and underground installations. However, the **higher cost, weight, and installation complexity** may pose challenges for smaller budgets or space-constrained projects. Additionally, performance depends on proper trim selection and maintenance.

For applications where **cost efficiency, ease of installation, or lower temperature tolerance** are critical, alternatives like **PVC or steel valves** (if compatible with the media) might be considered. Conversely, if **long-term reliability, heavy-duty performance, and large flow rates** are non-negotiable, this valve is a robust investment.

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- You are working on a **large-diameter pipeline (16")** requiring high flow capacity and durability.

- The application involves **water, wastewater, or industrial fluids** where corrosion resistance is essential.

- You can accommodate the **weight and installation requirements** (e.g., underground or heavy-duty mounting).

- Budget allows for the **upfront cost**, and long-term maintenance savings justify the investment.

- The **operating conditions** (temperature, pressure, media) align with the valve s specifications (verify trim materials for your specific use case).

- The project has **strict budget constraints** and smaller valves or alternative materials (e.g., PVC) are sufficient.

- The installation space is **limited**, and a larger valve would not fit.

- The application involves **extreme temperatures or aggressive chemicals** that exceed the valve s standard tolerances (custom trims may be needed, increasing costs).

- **Quick and frequent adjustments** are required, and the valve s actuation speed may not be optimal for your workflow.

**Final Note:** Always consult the **manufacturer s specifications**, local codes (e.g., AWWA, ASME), and a **valve specialist** to ensure the N500S-16 meets your exact requirements. Proper sizing, trim selection, and installation will maximize its performance and lifespan.

Details:

Our choice of shipping method is non-negotiable. This unit only includes what is photographed in the listing. Please review the entire shipping requirement below under Shipping heading. Pressure CWP 250 psi, Max.

Please view all the pictures before buying. There are also some cosmetic scuffs and scratches throughout the unit. Technical Specs. This is a Ghibson butterfly valve.

These items are being sold AS-IS for parts only. Pressure Steam Not Rated, Media Temp. It appears to be missing a handle. The shipping option you are presented for this item was chosen based on appropriate options weight, box dimensions, contents.

Item Butterfly Valve, Manufacturer Part NumberN500S-16, Pipe Size16 in, Connection Type Wafer, Disc Alignment Concentric, ANSI Flange Class 150, Bolt Holes4, Max. Shipping Info: 172 lbs, 40x48x36, 36064708, MSRP:2322, SHIPPING INSTRUCTIONS. Ghibson N500S-16 In Pipe Size Ductile Iron Body Butterfly Valve C.

part #: n500s16 prices

• $699.99-$2393.99

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• brand: Ghibson
• mpn: N500s-16
• part type: Pipe Valve

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• Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Butterfly Valves

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• started: February 18, 2026
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