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3" inch Coupling Threaded NPT 304 Stainless Steel FNPT x FNPT Full Coupling Class 150
CHF 15
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Constructed from durable 316 stainless steel, our FNPT x FNPT full coupling ensures both strength and longevity.
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What Stands Out
Product Details
- Fitting Type: Threaded Full Coupling
- FNPT x FNPT
- Material Grade: 304 Stainless Steel
- Lead Free Vietnam
- Material Conforms To ASTM-A-351, Threads Conform To ANSME B1.20.1, Meets MSS-SP-114 Class 150 Pressure Ratings
| Brand Name | Guardian |
| Number of Pieces | 1 |
| Model Number | 40FC111N030 |
| Manufacturer | Guardian |
| UPC | 840280502463 |
| Manufacturer Part Number | 40FC111N030 |
| Unit Count | 1.0 Count |
| Connector Type | Coupling |
| Thread Size | 3 inch (7.6 cm) |
| Thread Type | NPT |
| Size | 3 |
| Item Dimensions | 1.22 x 3.96 x 1.22 inches (3.1 x 10.1 x 3.1 cm) |
| Color | Silver |
| Exterior Finish | Stainless Steel |
| Material Type | Stainless Steel |
| Material | Stainless Steel |
| Brand | Guardian |
| Item dimensions L x W x H | 1.22 x 3.96 x 1.22 inches (3.1 x 10.1 x 3.1 cm) |
Who Should Buy?
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Plumbing Installers
Ideal for plumbing installers needing durable, corrosion-resistant connections for various pipe systems in residential and commercial buildings.
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Industrial Applications
Suitable for industrial environments requiring reliable, leak-free joints in water, oil, or gas piping applications under moderate pressure.
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DIY Home Projects
Great choice for DIY enthusiasts looking to create custom pipe fittings in home projects due to its easy installation.
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High-Pressure Systems
Not recommended for high-pressure applications beyond Class 150 ratings where stronger couplings are needed for safety.
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Gas Lines
May not be suitable for all gas line installations, as specific threaded fittings with approved certifications are required.
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Corrosive Fluids
Not ideal for transporting highly corrosive fluids, as even stainless steel can degrade under certain chemical conditions.
Product Description
Customer Questions & Answers
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Question:
What is a 3" 304 stainless steel class #150 threaded pipe coupling used for?
Answer: A 3" 304 stainless steel class #150 threaded pipe coupling is primarily used to connect two pieces of pipe securely in various piping systems, particularly in plumbing and industrial applications. Its robust stainless steel construction offers excellent resistance to corrosion, making it ideal for use in environments that involve water, chemicals, or other corrosive substances. This coupling is particularly useful in high-pressure applications such as water treatment plants and oil and gas industries. -
Question:
What are the specifications of a 3" 304 stainless steel pipe coupling?
Answer: The specifications for a 3" 304 stainless steel pipe coupling include a nominal diameter of 3 inches, with a Class #150 rating that denotes its pressure-handling capacity. The NPT (National Pipe Tapered) threads ensure a tight seal when connecting pipes. This fitting is often manufactured to meet ASTM A312/A403 standards, ensuring durability and reliability in high-stress environments, which is critical for maintaining the integrity of piping systems. -
Question:
Is the 3" 304 stainless steel threaded coupling suitable for outdoor use?
Answer: Yes, the 3" 304 stainless steel threaded coupling is suitable for outdoor use due to its corrosion-resistant properties. The 304 stainless steel alloy can withstand various weather conditions and exposure to moisture without rusting. This makes it a preferred choice for outdoor constructions like plumbing installations or irrigation systems where durability and longevity are essential. -
Question:
How does the NPT threading affect the connection of the coupling?
Answer: NPT threading, or National Pipe Tapered threading, creates a tight seal as the threads on the male and female fittings are engaged. This means that as the pipes are connected, the tapered shape of the threads helps compress the joint, reducing the risk of leaks. This feature is crucial for applications involving pressurized fluids or gasses, ensuring a reliable and secure connection that minimizes maintenance and service disruptions. -
Question:
Can the 3" 304 stainless steel coupling be used with other materials?
Answer: While the 3" 304 stainless steel coupling is designed for use with stainless steel pipes, it can also be connected to pipes made from other materials, such as PVC or copper, provided that appropriate transition fittings are used. It is important to ensure compatibility between materials to prevent corrosion issues and maintain the integrity of the system in mixed-material setups. -
Question:
What are the advantages of using 304 stainless steel for pipe fittings?
Answer: The advantages of using 304 stainless steel for pipe fittings include its excellent corrosion resistance, high durability, and ability to withstand high temperatures. This material is non-reactive, making it safe for use in food processing and medical applications. Because of these properties, 304 stainless steel is often chosen for various industrial applications, ensuring long-lasting performance in pipelines. -
Question:
How should I maintain a 3" 304 stainless steel coupling?
Answer: Maintenance of a 3" 304 stainless steel coupling primarily involves regular visual inspections for signs of wear or damage, ensuring that joints are secure and leak-free. Cleaning the surface with a mild detergent and water can help prevent the buildup of contaminants. For systems exposed to harsh chemicals, it's advisable to consult specific maintenance guidelines related to the chemicals used, ensuring the longevity and efficacy of the coupling. -
Question:
Where can I buy a 3" 304 stainless steel class #150 threaded pipe coupling NPT pipe fitting?
Answer: You can buy a 3" 304 stainless steel class #150 threaded pipe coupling NPT pipe fitting at Ubuy. Ubuy offers a wide variety of plumbing and industrial supplies, including high-quality stainless steel fittings, making it a convenient choice for sourcing the right materials for your projects. -
Question:
What is the difference between Class 150 and Class 300 pipe fittings?
Answer: Class 150 and Class 300 pipe fittings differ primarily in their pressure ratings. Class 150 fittings are suitable for lower pressure applications, while Class 300 fittings can handle significantly higher pressures. This distinction is important when selecting fittings for specific applications, as using the wrong class can lead to leaks or system failures. Thus, understanding the requirements of your system is vital for choosing the correct class for optimal performance. -
Question:
Can I use the 3" 304 stainless steel coupling for gas lines?
Answer: Yes, the 3" 304 stainless steel coupling can be used for gas lines, provided that the gas type is suitable for stainless steel materials. Its robust construction and strong pressure resistance make it a reliable choice for natural gas or propane applications. However, it is essential to follow local codes and regulations regarding gas installations to ensure safety and compliance.
Guardian Pipe Fittings 40FC111N030 Editorial Review
The 3 inch Coupling Threaded NPT 304 Stainless Steel FNPT x FNPT Full Coupling Class 150 has garnered a positive reception among users who appreciate its durability and quality of Construction. The 304 stainless steel material is frequently highlighted for its resistance to corrosion and ability to withstand various operating pressures. Customers report that this coupling is easy to install and perfectly fits standard NPT connections, which simplifies plumbing tasks. Many users commend the product's robust performance in residential and industrial applications. The threading is noted for being precise, allowing for secure connections that minimize leaks. This assurance of quality makes it a favored choice among professionals and DIY enthusiasts alike. While the product is well-received overall, a few customers have mentioned that it may be heavier than expected. However, this perceived heaviness often correlates with the durability that users seek in such fittings. In summary, the 3 inch Coupling Threaded NPT 304 Stainless Steel FNPT x FNPT Full Coupling Class 150 is valued for its quality, ease of use, and reliability in various settings, making it a trusted choice for those in need of durable plumbing fixtures. **
Customer Reviews & Ratings
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5 Star
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3 Star
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Pros
- Made from durable 304 stainless steel
- Excellent corrosion resistance
- Easy to install with precise threading
- Ideal for both residential and industrial applications
Cons
- Heavier than some users might anticipate
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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CHF 15
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Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Features & Benefits
- Constructed from durable 316 stainless steel for long-lasting use.
- Full coupling design with FNPT x FNPT threads for versatile applications.
- Meets industry standards: ASTM-A-351 and ANSI B1.20.1.
- Class 150 pressure ratings ensure reliable performance.
- Lead-free material, making it safe for various uses.
- Perfect for both commercial and residential plumbing projects.






