ASC
SCI® Press - Copper MPT Male Union
- SKU:
- SP657
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
SCI® Press - Copper MPT Male Union
SCI® Press - Copper MPT Male Union combines an SCI Press copper connection with a male threaded connection and a serviceable EPDM union joint, providing a convenient transition between compatible copper tubing and a female threaded piping component.
Identified by SCI as Fig. SP657, this fitting is cataloged as SP657 CU P x MT EPDM UNION. The union configuration creates a detachable connection point while transitioning from press-connected copper tubing to a compatible male threaded interface.
Product Highlights
- SCI® Press Copper MPT Male Union
- SCI Fig. SP657
- SCI catalog configuration: SP657 CU P x MT EPDM UNION
- Press x Male Threaded union configuration
- Integral serviceable union connection
- Transitions compatible copper tubing to a male threaded connection
- Allows separation at the union joint for service or component replacement
- Copper alloy construction for the SCI Press Copper system
- EPDM sealing system
- Grade “E” peroxide-cured EPDM press sealing element
- Designed for compatible ASTM B88 copper tubing
- Compatible with common pressing tools and jaws
- IAPMO UPC PS-117, NSF/ANSI 61, and NSF/ANSI 372 approvals/certifications
Technical Specifications
| Product Type | Copper Press MPT Male Union |
|---|---|
| Brand | SCI® Press |
| Figure | SP657 |
| SCI Configuration | SP657 CU P x MT EPDM UNION |
| Connection | Press x Male Threaded |
| Press Side | SCI Press Copper Connection |
| Threaded Side | Male Threaded |
| Configuration | EPDM Adapter Union |
| Union Function | Detachable connection between the press-connected copper piping and male threaded side |
| Copper System Body Material | Copper Alloy conforming to UNS C12200 |
| Press Sealing Element | Grade “E” EPDM, Peroxide Cured |
| EPDM Temperature Range | -20°F to 248°F |
| Copper Tubing Standard | ASTM B88 |
| Water Systems | 300 PSI; 600 PSI Test Pressure |
| Approvals & Certifications | IAPMO UPC PS-117, NSF/ANSI 61, NSF/ANSI 372 |
Construction Details
The SCI® Press Copper MPT Male Union is identified as Fig. SP657 and combines an SCI Press copper connection with a male threaded connection and EPDM union assembly.
SCI identifies the exact configuration as SP657 CU P x MT EPDM UNION. The press side provides the mechanical connection to compatible copper tubing, while the opposite side provides the male threaded interface for connection to a compatible female threaded component.
The center union assembly provides a detachable connection point. This allows the two sides of the connection to be separated for servicing without requiring the press connection to be removed from the copper tubing.
SCI Press Copper fitting bodies use copper alloy conforming to UNS C12200, and the press system uses Grade “E” peroxide-cured EPDM sealing elements.
Important: SCI states that fluids containing hydrocarbon-based oils are not compatible with the EPDM sealing system and that SCI Press Copper EPDM fittings are not for use in petroleum applications.
Press x Male Threaded Union Configuration
SCI Press Copper Side
The press side accepts compatible ASTM B88 copper tubing and is mechanically joined using the appropriate pressing tool and jaw.
Male Threaded Side
The opposite connection provides the male threaded interface for joining the union to a compatible female threaded valve, fitting, equipment connection, or other piping component.
Serviceable Union Connection
The SP657 provides more than a basic press-to-threaded transition. Its union configuration creates an intentional disconnect point within the piping system.
After the press side is installed onto the copper tubing and the threaded side is connected to the mating component, the union joint provides a location where the assembly can be separated for inspection, maintenance, or component replacement.
This configuration is especially useful near valves, equipment, pumps, assemblies, and other components that may require future servicing.
SP657 Connection Function
Press
Connects directly to compatible copper tubing using SCI Press mechanical connection technology.
Thread
Provides a male threaded interface for connecting to a compatible female threaded piping component.
Disconnect
The union assembly provides a serviceable separation point without requiring the installed press connection to be removed from the tubing.
SP657 vs. SP655 Copper Union
SP657 MPT Male Union
The SP657 uses a Press x Male Threaded configuration, allowing an SCI Press Copper system to transition to a compatible female threaded component while retaining a serviceable union connection.
SP655 Copper Union
The SP655 is SCI's Press x Press EPDM Union for joining two compatible copper tubing connections while providing a detachable center union joint.
SP657 vs. SP658 FPT Female Union
SP657 MPT Male Union
Uses a male threaded connection on the threaded side and is intended to mate with a compatible female threaded component.
SP658 FPT Female Union
SCI identifies the SP658 as its Copper FPT Female Union, providing a female threaded connection instead of the male threaded connection used on the SP657.
SCI® Press Copper Connection
SCI Press Technology provides a mechanical copper piping connection that eliminates the need for conventional soldering or brazing at the press joint.
SCI Press Copper Fittings are intended for use with ASTM B88 Types K, L, and M hard copper tubing from 1/2" through 4" and soft copper tubing from 1/2" through 1-1/4" within the applicable SCI Press fitting range.
The SCI Press Copper system is compatible with common pressing tools and jaws. SCI also states that fittings may be installed above and below ground where permitted by applicable local building codes.
EPDM Sealing System
The SCI Press Copper system uses peroxide-cured Grade “E” EPDM sealing elements. SCI lists an operating temperature range of -20°F to 248°F for the EPDM sealing material.
The EPDM seal is recommended by SCI for water service, diluted acids, alkaline solutions, oil-free air, and many other compatible chemical services.
Fluids containing hydrocarbon-based oils are not compatible with the EPDM seal. Do not use SCI Press Copper EPDM fittings in petroleum applications.
Selected Service Ratings
| Water Systems | 300 PSI; Test Pressure 600 PSI; -20°F to 248°F |
|---|---|
| Residential Steam | 5 PSI Maximum; 227°F |
| Compressed Air | 200 PSI Maximum; 140°F Maximum; oil concentration ≤25 mg/m³ |
| Nitrogen | 200 PSI Maximum; 140°F Maximum |
| Carbon Dioxide | 200 PSI Maximum; 140°F Maximum |
| Carbon Monoxide | 200 PSI Maximum; 140°F Maximum |
| Argon | 200 PSI Maximum; 140°F Maximum |
| Non-Medical Oxygen | 140 PSI Maximum; 140°F Maximum; keep free of oil and grease |
| Hydrogen | 125 PSI Maximum; 140°F Maximum |
| Vacuum - Differential Pressure | 29.2" Hg Maximum; 160°F Maximum |
Approvals & Certifications
IAPMO UPC PS-117
SCI identifies the SCI Press Copper fitting system with IAPMO UPC PS-117 approval.
NSF/ANSI 61
The SCI Press Copper fitting system carries NSF/ANSI 61 certification for applicable drinking-water applications.
NSF/ANSI 372
SCI also identifies NSF/ANSI 372 certification for its Press Copper fitting system.
Typical Applications
Plumbing & Mechanical Systems
- Potable water piping systems
- Commercial plumbing
- Residential plumbing
- Mechanical copper piping
- Press-to-threaded transitions
Serviceable Equipment Connections
- Compatible female threaded valves
- Pumps and mechanical equipment
- Female threaded fittings
- Components requiring future removal
- Piping systems requiring a detachable connection point
Installation & Selection Considerations
- Confirm both the press connection and male threaded connection size before ordering the SP657.
- Verify that the copper tubing complies with ASTM B88 and is compatible with the selected SCI Press fitting.
- Inspect the fitting, EPDM sealing elements, and copper tube before assembly and follow the supplied SCI Press installation instructions.
- Use a compatible pressing tool and jaw, properly assemble the male threaded connection, and secure the union joint according to applicable installation requirements.
- Verify fluid, pressure, temperature, and EPDM compatibility before placing the completed system into service.
Use the supplied SCI Press documents to confirm the SP657 Press x Male Threaded EPDM Union configuration, copper tubing compatibility, EPDM service requirements, system ratings, approvals, pressing procedures, and installation requirements.
SCI Press Copper Fittings Submittal PDF SCI Press Copper Installation Instructions PDF SCI Copper Press Product Flyer PDFNeed Help Selecting an SCI® Press Copper MPT Male Union?
Our fitting specialists can help review your SP657 connection size, copper tubing, mating female threaded component, press-tool compatibility, EPDM service requirements, and placement of the union within your piping system before you order.
Frequently Asked Questions
What is the SCI figure number for the Copper MPT Male Union?
SCI identifies the Copper MPT Male Union as Fig. SP657.
What is the SCI catalog configuration for the SP657?
SCI catalogs the fitting as SP657 CU P x MT EPDM UNION.
What connections does the SP657 use?
The SP657 combines an SCI Press copper connection with a male threaded connection and a serviceable EPDM union assembly.
What is the purpose of the union connection?
The union provides a detachable connection point that can simplify inspection, servicing, or removal of connected piping components without removing the installed press connection from the copper tubing.
What connects to the male threaded side?
The male threaded connection is intended to join a compatible female threaded valve, fitting, equipment connection, or other piping component.
How is the SP657 different from the SP655 Copper Union?
The SP657 uses a Press x Male Threaded configuration. The SP655 uses Press x Press connections on both sides of its EPDM union.
How is the SP657 different from the SP658 FPT Female Union?
The SP657 provides a male threaded connection, while the SP658 provides a female threaded connection.
Does the press connection require soldering or brazing?
No. SCI Press Technology uses a mechanical press connection that eliminates conventional soldering or brazing at the press joint.
What sealing material is used by the SCI Press Copper system?
SCI specifies peroxide-cured Grade “E” EPDM sealing material with an operating temperature range of -20°F to 248°F.
Can SCI Press Copper EPDM fittings be used for petroleum applications?
No. SCI states that fluids containing hydrocarbon-based oils are not compatible with the EPDM sealing system and that these fittings are not for use in petroleum applications.
What certifications are identified for the SCI Press Copper system?
SCI identifies IAPMO UPC PS-117, NSF/ANSI 61, and NSF/ANSI 372 approvals and certifications for the system.
Important Ordering & Installation Notes
- This listing is for the SCI® Press - Copper MPT Male Union, Fig. SP657.
- Confirm both the press connection and male threaded connection size before ordering.
- Verify copper tubing, mating threaded component, and intended service compatibility before installation.
- Properly assemble the press, threaded, and union connections according to applicable installation requirements.
- Do not use SCI Press Copper EPDM fittings in petroleum applications.
