NPT Hydraulic Fittings
We offer NPT (National Pipe Thread) hydraulic fittings, a standard for tapered pipe threads used in various hydraulic systems. These fittings ensure a leak-proof seal by creating a tight mechanical bond between the fitting and the pipe. Our NPT fittings are available in a wide range of sizes and materials, including brass, steel, and stainless steel, to suit diverse application needs.
NPT Hydraulic Hose Wholesale
We offer wholesale NPT hydraulic hose fittings. These are essential components for connecting hydraulic hoses in systems. As a hydraulic fitting manufacturer, we provide a wide selection of sizes, materials (brass, steel, stainless steel), and pressure ratings to meet various industrial demands. Our competitive pricing and bulk discounts make us an ideal supplier for businesses requiring large quantities of NPT fittings.

1/2 NPT Hydraulic Fittings
We supply 1/2 NPT hydraulic fittings, crucial components for connecting hydraulic hoses in various systems. These fittings ensure a secure and leak-free connection, enhancing the overall performance and reliability of hydraulic equipment.

1/4 NPT Hydraulic Fittings
We supply 1/4 NPT hydraulic fittings, specifically designed for 1/4 inch nominal pipe size. These fittings are crucial for connecting hydraulic hoses and components in various systems. 1/4 NPT is a common size, offering versatility in applications. We offer a range of 1/4 NPT fittings, including elbows, tees, adapters, and couplings, in materials like brass, steel, and stainless steel to suit different pressure and corrosion resistance requirements.

1/8 NPT Hydraulic Fittings
We supply 1/8 NPT hydraulic fittings, essential components for connecting hydraulic hoses in systems. These fittings are designed for smaller-diameter lines and are commonly used in various applications. Our 1/8 NPT fittings are available in a wide range of styles, including elbows, tees, and adapters, to accommodate diverse system configurations.

3/8 NPT Hydraulic Fittings
We supply 3/8 NPT hydraulic fittings, crucial components for connecting hydraulic hoses in various systems. These fittings ensure a secure and leak-free connection, vital for the reliable operation of hydraulic equipment.
Why Choose Our NPT Hydraulic Fittings
Unmatched Quality:
- Our NPT fittings are manufactured with precision and adhere to strict quality control standards.
- We utilize high-grade materials like brass, steel, and stainless steel, ensuring durability and resistance to corrosion and high pressures.
- This commitment to quality minimizes the risk of leaks and failures, enhancing system reliability and longevity.
Extensive Selection:
- We offer a comprehensive range of NPT fittings, encompassing various sizes, styles (elbows, tees, adapters, etc.), and pressure ratings.
- This extensive selection allows you to find the exact components you need for your specific hydraulic system requirements, simplifying the design and assembly process.
Competitive Pricing:
- We understand the importance of cost-effectiveness in industrial operations.
- Our competitive pricing structure makes our NPT fittings an attractive option for businesses of all sizes.
- We offer volume discounts for bulk orders, further enhancing the value proposition for our customers.
Proven Reliability:
- Our NPT fittings have a long and successful track record in various industrial applications, including heavy equipment, manufacturing, and construction.
- This proven reliability gives you confidence in the performance and durability of our products, minimizing downtime and ensuring the smooth operation of your hydraulic systems.
NPT Hydraulic Fitting FAQs
What Are NPT Hydraulic Fittings?
NPT, which stands for National Pipe Thread, is a standard for tapered pipe threads used extensively in hydraulic systems. NPT fittings feature male threads that are slightly tapered, while the female threads are straight. When these threads are screwed together, they create a tight mechanical seal. This seal is achieved through a combination of factors: the taper on the male threads, the compression of the pipe material against the female threads, and the application of sealant (such as Teflon tape or pipe dope).
Do you use teflon tape on NPT hydraulic fittings?
Teflon tape is generally not recommended for sealing NPT hydraulic fittings.
Here’s why:
- Contamination Risk: Hydraulic systems require clean fluid for optimal performance. Teflon tape fibers can break off and become lodged within the system, potentially clogging valves, damaging pumps, and interfering with system operation.
- Less Reliable Seal: While Teflon tape can provide some sealing, it may not be as effective as dedicated hydraulic sealants in withstanding high pressures and vibrations common in hydraulic systems.
- Better Alternatives: Hydraulic-specific sealants are specifically designed for use in these demanding environments. They offer superior sealing capabilities, resistance to high pressures and temperatures, and are less likely to contaminate the hydraulic fluid.
Recommended Sealants:
- Thread Sealants: These sealants are specifically formulated for hydraulic applications and provide a reliable and durable seal while minimizing the risk of contamination.
Important Note: Always consult the manufacturer‘s recommendations for the appropriate sealant to use with your specific hydraulic fittings and system.
JIC vs NPT hydraulic fititngs
JIC and NPT are two common standards for hydraulic fittings, each with distinct characteristics:
JIC (Joint Industrial Council) Fittings:
- Design: Feature a 37-degree flare at the end of the fitting, creating a metal-to-metal seal.
- Application: Primarily used in high-pressure hydraulic systems due to their robust sealing capabilities.
- Advantages:
- Excellent for high-pressure applications.
- Generally require no thread sealants.
- Provide a strong and reliable seal.
NPT (National Pipe Thread) Fittings:
- Design: Utilize tapered threads to create a seal.
- Application: More versatile and can be used in various applications, including lower-pressure systems.
- Advantages:
- More widely available and generally less expensive.
- Can be used in a broader range of applications.
Key Differences:
- Sealing Mechanism: JIC relies on a 37-degree flare, while NPT relies on tapered threads.
- Pressure Capabilities: JIC fittings are generally better suited for high-pressure applications.
- Sealant Requirements: JIC fittings typically do not require sealants, while NPT fittings often require thread sealants.
Choosing the Right Fitting:
The choice between JIC and NPT fittings depends on the specific requirements of your hydraulic system, including:
- Operating Pressure: If high pressures are involved, JIC fittings are generally preferred.
- Application: For general-purpose applications or lower-pressure systems, NPT fittings may be suitable.
- Budgetary Constraints: NPT fittings are often more cost-effective.
Important Note: JIC and NPT fittings are not interchangeable.
Can NPT and BSP be used together?
No, NPT (National Pipe Thread) and BSP (British Standard Pipe) fittings are not directly interchangeable.
Here’s why:
- Thread Profiles: While they may appear similar, they have distinct thread profiles. NPT has a 60-degree included thread angle, while BSP has a 55-degree included thread angle.
- Thread Pitch: Even in some cases where the nominal sizes appear the same, the number of threads per inch can differ between NPT and BSP, leading to incompatibility.
Attempting to force NPT and BSP fittings together can result in:
- Cross-threading: This can damage the threads and prevent a proper seal.
- Leaks: An improper seal will lead to leaks in the hydraulic system.
- System Failure: Leaks can cause significant problems in hydraulic systems, including reduced performance, contamination, and even catastrophic failures.
Recommendations:
- Use the Correct Fittings: Always use fittings that are specifically designed for your system and adhere to the appropriate standards (NPT or BSP).
- Utilize Adapters: If you need to transition between NPT and BSP systems, use dedicated adapters designed for this purpose. These adapters ensure a proper connection and maintain system integrity.
How to tell if thread is NPT or BSP?
Distinguishing between NPT and BSP threads can be challenging, but here are a few key characteristics:
Thread Angle:
- NPT threads have a 60-degree included angle.
- BSP threads have a 55-degree included angle. This subtle difference can be difficult to discern visually.
Thread Profile:
- NPT threads have flattened peaks and valleys (Sellers thread form).
- BSP threads have rounded peaks and valleys (Whitworth thread form).
Thread Pitch: While the nominal sizes may be similar, the number of threads per inch can differ between NPT and BSP, even for the same nominal size.
Taper:
- NPT threads are typically tapered, meaning the diameter increases slightly along the length of the thread.
- BSP threads can be either tapered (BSPT) or parallel (BSPP).
Practical Identification Methods:
- Visual Inspection: Carefully examine the thread profile. Look for the sharpness of the peaks and valleys.
- Thread Gauge: Use a thread pitch gauge to measure the angle and number of threads per inch.
- Reference Fitting: Compare the unknown thread to a known NPT or BSP fitting.
Disclaimer:
- Visual inspection and tactile examination may not always be conclusive.
- For critical applications, it’s crucial to use accurate measurement tools and consult relevant standards.
If you are unsure about the thread type, it’s always best to err on the side of caution and avoid forcing incompatible fittings together. Using the wrong fittings can lead to damage, leaks, and system failure.