Description
Double Tapped Bushings
Cast Iron Double Tapped Bushings are designed to provide a compact threaded transition between different pipe sizes while maintaining female NPT connections on both ends.
Manufactured from durable cast iron with a rugged hex-shaped body, these fittings provide a secure and serviceable solution for industrial, commercial, mechanical, and general threaded piping applications where pipe sizes must be adapted within a continuous piping run.
Product Highlights
- Double tapped bushing configuration
- Full female NPT threads on both ends
- Designed for reducing and adapting threaded pipe sizes
- Maintains female-threaded connections on both sides
- Rugged hex body for positive wrench engagement
- Durable cast iron construction
- Compact design for threaded piping transitions
- Suitable for continuous piping systems
- Designed for straightforward installation and service
Technical Specifications
| Product Type | Double Tapped Bushing |
|---|---|
| Material | Cast Iron |
| Connection Type | Female NPT x Female NPT |
| Thread Configuration | Full NPT Female Threads on Both Ends |
| Body Style | Hex Body |
| Primary Function | Reduce or Adapt Between Threaded Pipe Sizes |
| Installation Method | Threaded |
| Typical Use | Continuous Threaded Piping Systems |
Construction & Applications
Cast Iron Construction
The durable cast iron body provides a strong threaded fitting for industrial, commercial, and mechanical piping installations.
Double Female Threads
Full female NPT threads on both ends allow the fitting to connect male-threaded pipe or components of different nominal sizes.
Hex Body Design
The rugged hex-shaped exterior provides wrench flats for easier tightening, positioning, and removal during installation or maintenance.
Why Use a Double Tapped Bushing?
Female-to-Female Size Transition
Unlike a conventional hex bushing with male threads on the outside and female threads on the inside, a double tapped bushing provides female threaded connections on both ends.
Compact Piping Adaptation
The fitting provides a convenient way to transition between different male-threaded pipe sizes without adding several separate fittings to the piping assembly.
Typical Applications
Industrial & Commercial Piping
- Industrial piping systems
- Commercial piping installations
- Mechanical piping
- General utility piping
- Threaded equipment connections
Pipe Size Adaptation
- Reducing threaded pipe sizes
- Adapting male-threaded components
- Maintaining continuous piping runs
- Compact connection points
- Maintenance and retrofit installations
Ask Willy: Need Pipe Size Help?
Use our common pipe diameters and wall thickness chart to confirm sizing before ordering threaded fittings. You can also review the double tapped bushing data sheet and Certificate of Conformance below.
Need More Malleable & Cast Iron Fittings?
Shop our selection of 150# black malleable iron fittings, including tees, elbows, couplings, bushings, plugs, unions, and other threaded fittings.
Frequently Asked Questions
What is a double tapped bushing?
A double tapped bushing is a threaded fitting with female NPT threads on both ends. It is commonly used to adapt between different male-threaded pipe sizes.
How is a double tapped bushing different from a standard hex bushing?
A standard hex bushing typically has male threads on the outside and female threads on the inside. A double tapped bushing has female threaded connections on both ends.
What type of threads does this fitting use?
The supplied product information identifies full NPT female threads on both ends.
Can this fitting be used to reduce pipe size?
Yes. Double tapped bushings are designed to adapt between different threaded pipe sizes while maintaining female connections at both ends.
Why does the fitting have a hex body?
The hex body provides flat surfaces for wrench engagement, making the fitting easier to tighten, position, and remove.
What material is this fitting made from?
The supplied product information identifies the fitting as cast iron.
Where are double tapped bushings commonly used?
They are useful in industrial, commercial, and mechanical threaded piping systems where a compact female-to-female size transition is required.
Does this fitting change the direction of the piping?
No. A double tapped bushing is intended for an in-line size transition rather than a directional change.
What should I verify before ordering?
Confirm both required nominal thread sizes, connection type, system service, and application requirements before ordering.
Important Ordering & Installation Notes
- Confirm both nominal connection sizes before ordering.
- This fitting uses female NPT threads on both ends.
- Do not confuse a double tapped bushing with a conventional male x female hex bushing.
- Use the hex body for wrench engagement during installation.
- Use compatible threaded pipe, fittings, and thread sealant appropriate for the intended system.
- Avoid excessive tightening that could damage the fitting or adjoining threaded components.
- Verify pressure, temperature, media compatibility, and applicable piping-system requirements before installation.
- Refer to the product data sheet and Certificate of Conformance for additional information.
