DELPHI FITTINGS
Part #: W43
NPTF Pipe Female x Code 61 Flange Pad Adapter
Product Overview
The Delphi Fittings Part W43 is a specialized flange pad adapter, also known as a block flange or monoblock flange adapter. It is precision-machined from high-quality carbon steel and designed to provide a direct, robust connection from a component surface with an SAE Code 61 bolt pattern to a male NPTF (National Pipe Taper Fuel / Dryseal) threaded pipe or fitting. This one-piece adapter features an integral Code 61 flange head with an O-ring groove on its base, which seals directly against the component's flat port face. The other connection point is a female NPTF pipe thread. Unlike standard flange head adapters that require separate split flange clamps, the W43 pad adapter is bolted directly to the component using its integrated bolt holes. Typically zinc-plated for corrosion resistance, the W43 adapter conforms to SAE J518 (for the flange pattern) and ANSI B1.20.3/SAE J476 (for the NPTF thread) standards, ensuring excellent performance in demanding hydraulic systems.
Key Features & Specifications
| Material | High-Grade Carbon Steel |
|---|---|
| End 1 Configuration | Female NPTF Pipe (Dryseal) (threads conforming to ANSI B1.20.3 / SAE J476) |
| End 2 Configuration | SAE Code 61 Flange Pad (integral flange head with O-ring groove and bolt holes, dimensions conforming to SAE J518 / ISO 6162-1 for Code 61 port pattern) |
| Body Style | Straight Flange Pad / Block Flange Adapter. |
| Sealing Mechanism | NPTF Female End: Forms a Dryseal (metal-to-metal) when mated with a male NPTF fitting. If connecting to a standard NPT male fitting, the use of a compatible thread sealant on the male NPT threads is recommended for optimal sealing. Flange End: Utilizes an elastomeric O-ring (seated in the groove on the flange pad face) which compresses against the flat surface of the mating Code 61 port. The adapter is secured directly by bolts through its integral flange holes. |
| Corrosion Protection | Standard Zinc Plating for enhanced durability. |
| Primary Function | To provide a direct, bolted Code 61 flange connection to a component port, adapting it to a female NPTF pipe thread for connection to a male NPTF pipe or fitting. |
| Working Pressure | Suitable for standard duty high-pressure hydraulic systems as defined by SAE Code 61 (typically 3000-5000 PSI depending on size). |
| O-Ring Material (for Flange end) | Typically Buna-N (Nitrile) 90 Durometer as standard. Viton® (FKM) or other materials available upon request for specific fluid or temperature compatibility. The O-ring is supplied with the fitting. |
Commonly Available Sizes (Part #W43 Series)
Delphi Fittings offers the NPTF Pipe Female x Code 61 Flange Pad Adapter in various common NPTF and Code 61 flange sizes.
Examples include (Female NPTF x Code 61 Flange Size):
- W43-08-08: 1/2" NPTF Female x 1/2" (-08) Code 61 Flange Pad
- W43-12-12: 3/4" NPTF Female x 3/4" (-12) Code 61 Flange Pad
- W43-16-16: 1" NPTF Female x 1" (-16) Code 61 Flange Pad
- W43-20-20: 1-1/4" NPTF Female x 1-1/4" (-20) Code 61 Flange Pad
Note: Each flange pad includes an appropriate O-ring. This adapter is designed to be bolted directly to the component port; ensure appropriate bolt lengths and grades are used for the application. For unlisted size combinations, specific material requirements (e.g., stainless steel options), or other custom needs, please contact our sales team.
Applications
The Part W43 NPTF Pipe Female x Code 61 Flange Pad Adapter is ideal for:
- Directly mounting to hydraulic components such as pumps, motors, valves, and manifolds that have a SAE Code 61 port pattern, providing a female NPTF port for connecting pipes or other male NPTF threaded fittings.
- Applications where a compact, one-piece flange connection is preferred for its strength and to reduce potential leak paths compared to using separate flange head adapters and split flange clamps.
- Use in mobile equipment, industrial machinery, and various hydraulic systems requiring a secure and reliable transition from a Code 61 flange port to an NPTF threaded connection.
- Installations where space is limited and a direct block-style flange adapter offers a more streamlined profile.
Installation & Usage Guidelines
- Thoroughly inspect the Code 61 flange pad face, its O-ring groove and O-ring, the mating component port surface, and the female NPTF threads. Ensure all surfaces are clean, undamaged, and free from any contaminants.
- Verify that the O-ring for the flange end is the correct size and material for the application and is properly lubricated with a system-compatible fluid.
- Carefully install the lubricated O-ring into the groove on the flange pad face of the adapter.
- Position the flange pad squarely against the mating Code 61 port face on the component, ensuring the bolt holes align correctly.
- Insert the appropriate mounting bolts (typically four, with lock washers if specified by the equipment manufacturer) through the integral flange holes of the W43 adapter and into the tapped holes in the component port.
- Lightly snug all bolts. Then, tighten them progressively and evenly in a diagonal or cross-pattern sequence to the manufacturer's recommended torque specification for the flange size and bolt grade to ensure even O-ring compression.
- For the female NPTF end, thread a mating male NPTF pipe or fitting into it. While NPTF threads are designed for a Dryseal, applying a compatible thread sealant (such as PTFE tape or pipe dope) to the male NPTF threads is often recommended, especially if mating with standard NPT male threads or for optimal sealing in high-pressure applications. Tighten to the recommended specification for the NPTF connection.
- Use appropriate backup wrenches on the hex features of the adapter body when tightening the NPTF connection if necessary.
Why Choose Delphi Fittings Part W43?
- Integrated and Compact Design: The one-piece flange pad (block flange) design offers a strong, direct connection to Code 61 ports, reducing the need for additional components and minimizing potential leak paths.
- Reliable Dual Sealing: Combines the secure bolted Code 61 flange O-ring seal on the component side with the robust NPTF Dryseal thread for the pipe or fitting connection.
- Simplified Assembly in Certain Applications: Can reduce component count and assembly complexity compared to using traditional flange head adapters with separate split flange clamps.
- Standard Compliance: Meets SAE J518 (Code 61) for the flange pattern and ANSI B1.20.3/SAE J476 for NPTF threads, ensuring compatibility.
- Durable Carbon Steel Construction: Manufactured from high-grade carbon steel for exceptional strength and longevity in demanding industrial and mobile environments.
- Enhanced Corrosion Resistance: Standard zinc plating provides robust protection against rust and other environmental factors.
- Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.
Get a Quote for Part W43 - NPTF Female x Code 61 Flange Pad Adapter
For robust, integrated connections adapting Code 61 flange ports directly to female NPTF connections, the Part W43 Flange Pad Adapter offers an excellent and reliable solution. Contact Delphi Fittings today for wholesale pricing, bulk order information, and expert technical support for your hydraulic fitting requirements.
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