FISHER N310-10 Npt Lp Gas Valve N400-10 1/4 LP-GAS/NH3

( Brand: Fisher ), ( Manufacturer Part Number: N310-10 ), ( Part Type: Valve ), ( Unit Type: Unit ), ( Color: Gray ), ( Country Of Origin: China )

Review FISHER 1/4 Inch Npt Lp-gas/nh3 Valve 400 Psig

The **Fisher N310-10/N400-10 1/4" NPT LP-Gas/NH Valve (400 Series)** is a robust, high-performance control valve engineered for demanding industrial applications requiring precise regulation of liquefied petroleum gas (LP-Gas) and ammonia (NH ) systems. Part of Fisher s trusted **400 Series** line, this valve combines durability, reliability, and advanced control capabilities to ensure optimal performance in critical process environments. Designed with a **1/4" National Pipe Thread (NPT) connection**, it seamlessly integrates into piping systems where space efficiency and tight sealing are paramount, making it ideal for applications such as refrigeration, chemical processing, and gas distribution networks.

At its core, this valve features a **pneumatic or electric actuator interface**, allowing for seamless integration with automated control systems for precise flow modulation. The **N310-10** variant incorporates a **globe-style design** with a **single-seated configuration**, delivering excellent throttling control and minimal pressure drop, while the **N400-10** variant offers a **double-seated design** for enhanced balancing and reduced leakage, ensuring superior performance in bidirectional flow applications. Both models are constructed from **high-quality materials**, including corrosion-resistant alloys and reinforced body components, to withstand the harsh conditions of LP-Gas and ammonia environments, including exposure to moisture, temperature fluctuations, and aggressive media.

The valve s **1/4" NPT porting** ensures compatibility with standard piping systems, while its **LP-Gas/NH -rated construction** adheres to strict industry standards for safety and efficiency. The **400 Series** architecture incorporates a **modular design**, allowing for easy maintenance and replacement of internal components without disrupting the entire system. Additionally, the valve is equipped with **Fisher s proprietary control technology**, including **fail-safe positioning** and **positioner compatibility**, ensuring reliable operation even under extreme conditions. Whether deployed in a refrigeration plant, chemical processing facility, or gas distribution network, this valve delivers consistent, high-precision control, making it a dependable choice for engineers and operators demanding performance, longevity, and operational flexibility.

### **Pros and Cons of buying a Fisher N310-10/N400-10 1/4" NPT LP-Gas/NH Valve (400 Series)**

1. **High-Quality Construction** Fisher Instruments is a well-known brand in industrial valve manufacturing, known for durability and reliability in harsh environments. These valves are designed for long-term performance in gas applications.

2. **Dual-Fuel Compatibility** The valve is rated for both **liquefied petroleum gas (LP-Gas)** and **ammonia (NH )**, making it versatile for different industrial or agricultural applications (e.g., refrigeration, heating systems, or agricultural equipment).

3. **1/4" NPT Threading** Standardized threading ensures compatibility with common fittings, reducing the need for adapters or custom modifications.

4. **Pressure Rating (400 PSI)** The **400 PSI** rating indicates robust pressure handling, suitable for medium to high-pressure gas systems without excessive strain.

5. **Manual Operation** As a manually operated valve, it provides simple, direct control without requiring external power or complex automation, which can be advantageous in remote or off-grid applications.

6. **Corrosion Resistance** Likely constructed from materials (such as brass or stainless steel) that resist corrosion from LP-gas and ammonia, extending the valve s lifespan in corrosive environments.

7. **Standardized Design** Part of the **N-series**, which is a common and well-documented line, making maintenance, replacement, and troubleshooting easier.

8. **Cost-Effective for Basic Needs** Compared to specialized or automated valves, this manual valve offers a balance between functionality and affordability for general-purpose use.

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1. **Manual Operation Limitations** Requires physical intervention to open/close, which can be inconvenient in automated systems or high-traffic applications. No remote or electric actuation is available.

2. **Potential Leak Risk** Like all valves, improper installation, worn seals, or corrosion over time can lead to leaks, especially with gases like ammonia, which are hazardous if released.

3. **Limited Pressure Range** While 400 PSI is sufficient for many applications, it may not be adequate for high-pressure industrial systems requiring valves rated for 1000 PSI or higher.

4. **No Built-In Safety Features** Lacks integrated safety mechanisms such as pressure relief or automatic shutoff, which may be necessary in critical applications (e.g., refrigeration units with ammonia).

5. **Maintenance Dependency** Manual valves require periodic inspection for wear, corrosion, or seal degradation. Neglect can lead to failures, especially in environments with fluctuating temperatures or aggressive chemicals.

6. **Size Constraints** The **1/4" NPT** size limits flow capacity, making it unsuitable for high-volume gas applications. Larger systems may require multiple valves or larger-diameter fittings.

7. **Potential Compatibility Issues** While NPT threading is standard, slight variations in pipe materials or connections (e.g., galvanized vs. copper) could cause leaks if not properly sealed.

8. **No Warranty or Support Details** Without specific warranty information from the seller, there may be uncertainty about coverage for defects or failures, especially if purchased from a third-party vendor.

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The **Fisher N310-10/N400-10 1/4" NPT LP-Gas/NH valve** is a **practical, durable, and cost-effective choice** for applications requiring manual control of LP-gas or ammonia at moderate pressures. Its dual-fuel compatibility and standardized design make it a reliable option for general industrial, agricultural, or residential use where high pressure and automation are not critical.

However, its **manual operation, limited pressure handling, and lack of advanced safety features** may make it unsuitable for high-risk or high-volume systems. Users should ensure proper installation, regular maintenance, and compatibility with their specific setup to avoid leaks or failures.

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- You need a **simple, reliable manual valve** for LP-gas or ammonia in low-to-medium pressure applications (e.g., small refrigeration units, portable heaters, or agricultural equipment).

- You prioritize **durability and brand reputation** over advanced features.

- Your system s flow requirements are **low to moderate** (1/4" NPT is sufficient).

- You require **automated or remote-controlled valves** for safety or efficiency.

- Your application involves **high-pressure gas systems** (consider a higher-rated valve).

- You need **integrated safety features** (e.g., pressure relief, automatic shutoff).

- The valve will be exposed to **extreme corrosion** without additional protective measures (e.g., stainless steel fittings).

- For **automated control**, look for **solenoid or electric-actuated valves** from Fisher or other brands.

- For **higher pressure**, opt for valves rated **1000 PSI or above**.

- For **critical ammonia systems**, prioritize valves with **seal leak detection** or **pressure relief mechanisms**.

If the valve fits your needs and budget, it is a **solid, long-lasting purchase** for basic gas control applications. Always verify compatibility with your specific system and follow installation guidelines to ensure safety.

Details:

Made by the reputable brand Fisher, this valve is built to last and withstand up 400 PSIG of pressure. The Fisher N400-10 1/4 NPT LP-Gas/NH3 Valve is a high-pressure valve designed for use in various industrial applications. With its gray color and compact design, it is easy to identify install in pipelines or systems requiring a 1/4 NPT connection. Valve is in great condition.

The valve is manufactured in the USA ensuring quality and reliability for your LP-GAS OR NH3 application.

part #: n31010 prices

• $85.00-$402.29

specifications valvesplumbing:

• brand: Fisher
• mpn: N310-10
• part type: Valve
• unit type: Unit
• color: Gray
• country of origin: China

returns valvesplumbing:

• policy: No Returns

shipping valvesplumbing:

• transit: 3-7 Days
• carrier: USPS
• service: USPS Ground Advantage
• type: Fixed
• cost: $18.75
• class: Standard

payments valvesplumbing:

• other
• credit card: Diners-club
• wallet: Paypal

offer valvesplumbing:

• availability: In Stock
• options: Ship-to-home
• started: June 8, 2026
• sold: 0
• quantity: 1
• best offers: True

seller valvesplumbing:

• city: Grey Eagle, Minnesota
• # reviews: 697
• rating: 100.0%

general valvesplumbing:

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

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