Charman Inc.
3/4" FIP x 3/4" FIP Copper Corrugated Connector
- Availability:
- Usually in Stock – Ships Quickly
- Weight:
- 0.00 LBS
Description
3/4" FIP x 3/4" FIP Copper Corrugated Connector
Charman Inc Copper Corrugated Water Heater Connectors provide a flexible threaded connection for water heater and compatible plumbing installations. This family features 3/4" FIP connections on both ends with corrugated copper tube construction and is available in 12", 15", 18", and 24" lengths.
The connector combines a copper corrugated tube, brass-plated brass fittings, machine solid brass nuts, and a high-quality EPDM gasket. It is rated for working pressures up to 125 PSIG, intermittent impulse pressures up to 180 PSIG, and temperatures from -40°F to 180°F. Each connector is 100% leak tested.
Product Highlights
- Copper corrugated water heater connector
- 3/4" FIP x 3/4" FIP connection configuration
- Female threaded connections on both ends
- Copper corrugated tube construction
- Brass-plated brass HPb58-3 fittings
- Machine solid brass nuts
- High-quality EPDM gasket
- Working pressure up to 125 PSIG
- Intermittent impulse pressure up to 180 PSIG
- Temperature range from -40°F to 180°F (82°C)
- Minimum bend radius of 2.5"
- 100% leak tested
- Available in 12", 15", 18", and 24" lengths
Technical Specifications
| Product Type | Copper Corrugated Water Heater Connector |
|---|---|
| Brand | Charman Inc |
| Connection Configuration | 3/4" FIP x 3/4" FIP |
| Connection Type | Female Iron Pipe x Female Iron Pipe |
| Tube Material | Copper Corrugated Tube |
| Fitting Material | Brass-Plated Brass HPb58-3 |
| Nut Construction | Machine Solid Brass |
| Gasket | High-Quality EPDM |
| Maximum Working Pressure | 125 PSIG |
| Intermittent Impulse Pressure | Up to 180 PSIG |
| Temperature Range | -40°F to 180°F (82°C) |
| Minimum Bend Radius | 2.5" |
| Testing | 100% Leak Tested |
| Available Lengths | 12", 15", 18" and 24" |
| Primary Application | Water Heater and Compatible Plumbing Connections |
Certifications & Approvals
- IAPMO/UPC Certified
- ASME A112.18.6 / CSA B125.6
- NSF 61 Compliant
- AB 1953 Compliant - Lead Free
Corrugated Copper Construction
The corrugated copper tube provides flexibility between fixed connection points, helping accommodate positioning and alignment during water heater and plumbing installations. The connector maintains 3/4" FIP connections on both ends while allowing controlled bends within its specified minimum bend radius.
Brass-plated brass fittings, machine solid brass nuts, and an EPDM gasket complete the connection assembly.
Pressure & Temperature Performance
Pressure Ratings
- Working pressure up to 125 PSIG
- Intermittent impulse pressure up to 180 PSIG
- 100% leak tested
Temperature Range
- Minimum temperature: -40°F
- Maximum temperature: 180°F (82°C)
- Suitable for compatible hot and cold water applications within published limits
Available Connector Lengths
- 12" - SKU 174012
- 15" - SKU 174015
- 18" - SKU 174018
- 24" - SKU 174024
All four variants use the same 3/4" FIP x 3/4" FIP connection configuration. Select the required connector according to the installation distance and routing requirements.
Understanding the Connection Configuration
This connector has 3/4" FIP connections on both ends. FIP identifies a female threaded pipe connection, so each end is designed to mate with a compatible 3/4" male threaded connection.
Because all variants use the same end connections, the primary selection difference between SKUs is overall connector length.
Choosing the Correct Length
Measure the distance and planned routing between connection points before selecting a connector. Choose a 12", 15", 18", or 24" length that provides adequate routing without placing excessive tension, compression, or distortion on the corrugated tube.
Maintain at least the specified 2.5" minimum bend radius and avoid sharp bends, kinks, crushing, or twisting during installation.

Ask Willy: Need Copper Connector Help?
Review the Copper Water Heater Connector specification sheet for product, pressure, temperature, and dimensional information, or use the Charman Inc catalog to compare available connector sizes, lengths, and configurations before ordering.
Installation & Selection Guidance
- Confirm that the required connection configuration is 3/4" FIP x 3/4" FIP.
- Verify that both FIP connections mate with compatible 3/4" male threaded connections.
- Select the appropriate connector length for the installation distance and routing.
- Maintain a minimum bend radius of 2.5".
- Do not sharply bend, kink, crush, or twist the corrugated copper tube.
- Inspect the connector, fittings, nuts, and gasket before installation.
- Do not install components that are visibly damaged.
- Align threaded connections carefully to avoid cross-threading.
- Use sealing practices appropriate for threaded plumbing connections.
- Do not exceed the 125 PSIG working-pressure rating.
- Use only within the specified -40°F to 180°F temperature range.
- Check completed connections for leaks before placing the system into service.
- Follow applicable plumbing codes, equipment instructions, and local requirements.
- Installation should be performed by qualified personnel.
Product Selection Considerations
Connection Compatibility
Both ends are 3/4" FIP. Confirm that each mating connection provides a compatible 3/4" male pipe thread before ordering.
Length & Routing
Select the 12", 15", 18", or 24" variant according to the required installation distance. Maintain the 2.5" minimum bend radius and avoid unnecessary stress on the connector.
Need Help Selecting a Copper Connector?
Our PVF specialists can help review your threaded connection requirements, connector length, pressure and temperature requirements, and installation configuration before you order.
Frequently Asked Questions
What connections does this copper connector have?
This connector has 3/4" FIP female threaded connections on both ends.
What lengths are available?
This listing includes 12", 15", 18", and 24" connector lengths.
What is the maximum working pressure?
The connector is rated for working pressure up to 125 PSIG.
What is the intermittent impulse pressure rating?
The intermittent impulse pressure rating is up to 180 PSIG.
What temperature range is this connector rated for?
The specified temperature range is -40°F to 180°F, with 180°F equal to approximately 82°C.
What is the minimum bend radius?
The minimum bend radius is 2.5". Avoid bending the connector more tightly than this during installation.
What type of gasket is used?
The connector uses a high-quality EPDM gasket.
What are the fittings made from?
The fittings are brass-plated brass HPb58-3, and the connector uses machine solid brass nuts.
Is this connector leak tested?
Yes. The connectors are 100% leak tested.
Is this connector lead free?
Yes. The connector is AB 1953 compliant and lead free.
What certifications and standards apply?
The connector is IAPMO/UPC Certified and compliant with ASME A112.18.6 / CSA B125.6, NSF 61, and AB 1953.
What does FIP mean?
FIP identifies a female threaded pipe connection designed to mate with a compatible male pipe-thread connection.
What is the difference between the variants?
All variants use the same 3/4" FIP x 3/4" FIP connection configuration. The difference is connector length: 12", 15", 18", or 24".
Where can I find additional product information?
Use the Charman Inc Copper Water Heater Connector specification sheet and catalog linked in the Willy section for additional product, dimensional, and selection information.
Important Ordering Notes
- This listing is for 3/4" FIP x 3/4" FIP copper corrugated connectors.
- Available lengths are 12", 15", 18", and 24".
- SKU 174012 is the 12" variant.
- SKU 174015 is the 15" variant.
- SKU 174018 is the 18" variant.
- SKU 174024 is the 24" variant.
- Maximum working pressure is 125 PSIG.
- Intermittent impulse pressure is up to 180 PSIG.
- Temperature range is -40°F to 180°F.
- Minimum bend radius is 2.5".
- Confirm compatible 3/4" male threaded mating connections before ordering.
- Review the linked specification sheet and Charman Inc catalog for additional product information.
- Installation should comply with applicable plumbing codes and local requirements.