DELPHI FITTINGS
Part Number: 5000-SS
NPTF Pipe Female Coupling (Stainless Steel)
Product Overview
The Delphi Fittings Part 5000-SS is a high-quality female coupling designed to connect two male NPT (National Pipe Taper) or NPTF (Dryseal) threaded pipes or fittings of the same size in a straight line. Manufactured from premium stainless steel (typically Grade 316 SS), this coupling offers excellent resistance to corrosion, chemicals, and extreme temperatures. Its NPTF (Dryseal) threads are machined to higher tolerances to create a metal-to-metal seal with a male NPTF fitting, making it a superior choice for demanding applications in marine, chemical processing, food and beverage, and other harsh environments where standard steel fittings may not suffice.
Key Features & Specifications
| Material | High-Grade Stainless Steel (Typically 316 SS for superior corrosion resistance) |
|---|---|
| Configuration | Female NPTF Pipe x Female NPTF Pipe Coupling (conforming to ANSI B1.20.3 / SAE J476) |
| Body Style | Straight Coupling, typically with a hexagonal (hex) body for secure wrench engagement. |
| Sealing Mechanism | NPTF Dryseal threads are designed to create a metal-to-metal seal when mated with male NPTF fittings. If connecting to standard NPT male threads, the use of a compatible thread sealant (e.g., PTFE tape) on the male threads is recommended for an optimal seal. |
| Corrosion Protection | Inherent to the stainless steel material; may be passivated to further enhance surface integrity. |
Commonly Available Sizes (Part #5000-SS Series)
Delphi Fittings offers the 5000-SS Stainless Steel NPTF Female Coupling in a range of common nominal pipe sizes.
Examples include (Female NPTF x Female NPTF):
- 5000-02-SS: 1/8" NPTF x 1/8" NPTF
- 5000-04-SS: 1/4" NPTF x 1/4" NPTF
- 5000-06-SS: 3/8" NPTF x 3/8" NPTF
- 5000-08-SS: 1/2" NPTF x 1/2" NPTF
- 5000-12-SS: 3/4" NPTF x 3/4" NPTF
- 5000-16-SS: 1" NPTF x 1" NPTF
Note: For unlisted sizes, different stainless steel grades (e.g., 304), or other custom requirements, please contact our sales team.
Applications
The Part 5000-SS Stainless Steel Coupling is ideal for:
- Connecting two male NPT or NPTF pipes or fittings in environments where superior corrosion resistance is critical.
- Use in marine and offshore hydraulic systems, chemical processing plants, food and beverage facilities, pharmaceutical production, and water treatment systems.
- Applications involving corrosive fluids, high humidity, saltwater spray, or frequent washdowns where carbon steel fittings would degrade.
- Providing a strong, durable, and leak-resistant in-line connection for stainless steel piping systems.
Installation & Usage Guidelines
- Ensure all mating male NPT/NPTF threads and the female NPTF threads of the coupling are meticulously clean and free from any damage or contaminants.
- While NPTF threads are designed for a dry seal, it is highly recommended to apply a thread lubricant or anti-galling paste suitable for stainless steel to the male threads. This will prevent galling and ensure a smooth, secure connection. If mating with standard NPT male threads, a compatible sealant (like PTFE tape) is required.
- Thread the male fittings into each end of the coupling by hand until snug.
- Use appropriate wrenches on the hex body of the coupling and on the mating fittings to tighten securely. Tighten until a leak-proof seal is achieved, but avoid over-tightening which can damage the threads or fitting.
Why Choose Delphi Fittings Part 5000-SS?
- Superior Corrosion Resistance: Manufactured from high-grade stainless steel (typically 316 SS), offering maximum durability in harsh chemical, marine, or sanitary environments.
- Reliable Sealing: NPTF Dryseal threads provide a robust metal-to-metal seal, minimizing the risk of leaks in critical applications.
- Durable Construction: The solid one-piece design ensures high mechanical strength and integrity for high-pressure systems.
- Wide Chemical & Temperature Compatibility: Stainless steel allows for use with a broader range of fluids and across a wider temperature range compared to carbon steel.
- Standard Compliance: Conforms to ANSI B1.20.3 / SAE J476 standards, ensuring compatibility with standard NPTF and NPT male fittings.
- Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.
Get a Quote for Part 5000-SS - NPTF Pipe Female Coupling (Stainless Steel)
For durable, corrosion-resistant, and reliable in-line connections between two male NPT/NPTF pipes or fittings, the Part 5000-SS Stainless Steel Coupling is an excellent choice for your demanding applications. Contact Delphi Fittings today for wholesale pricing, bulk order information, and expert technical support.
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