ASC
150# Stainless Steel Full Coupling
- SKU:
- S3114CP & S3116CP
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
150# Stainless Steel Full Coupling
SCI Heavy Pattern 150# Stainless Steel Full Couplings provide a durable female-threaded connection for joining two compatible male NPT pipes, nipples, or fittings in a straight piping run.
Available in 304 and 316 stainless steel, these cast heavy-pattern couplings feature female NPT connections on both ends and are designed for compatible industrial, commercial, petroleum transfer, and process piping applications.
Product Highlights
- SCI Heavy Pattern Class 150 fitting
- 304 and 316 stainless steel options
- Female NPT connections on both ends
- Full coupling configuration
- Heavy-pattern cast construction
- Straight in-line pipe connection
Technical Specifications
| Product Type | Stainless Steel Full Coupling |
|---|---|
| Brand | ASC / SCI |
| Figure | S3114CP / S3116CP |
| Pressure Class | Class 150 |
| Material Options | 304 Stainless Steel / 316 Stainless Steel |
| Casting Grades | ASTM A351 CF8 / CF8M |
| Construction | Cast Stainless Steel, Heavy Pattern |
| Connection | Female NPT x Female NPT |
| Thread Standard | ASME B1.20.1 |
| Configuration | Full Coupling |
| Function | Straight In-Line Threaded Connection |
Construction Details
SCI Heavy Pattern Class 150 full couplings are manufactured from cast stainless steel. The 304 stainless steel version uses ASTM A351 Grade CF8 material, while the 316 stainless steel version uses ASTM A351 Grade CF8M.
The coupling incorporates female NPT threads on both ends to join two compatible male-threaded pipes, nipples, or fittings in a straight piping run.
The full-length coupling body provides threaded engagement from both sides while retaining a removable mechanical connection for compatible piping systems.
Design & Typical Applications
Coupling Design
- Heavy-pattern cast body
- Female NPT x female NPT
- Straight-through configuration
- 304 or 316 stainless steel
- Removable threaded connection
Typical Applications
- Industrial process piping
- Water and utility systems
- Petroleum transfer piping
- Chemical process systems
- Air and general service lines
Installation & Selection Considerations
- Confirm the required pipe size.
- Select the proper stainless grade.
- Use compatible thread sealant.
- Inspect NPT threads before assembly.
- Avoid excessive tightening torque.

Use the SCI Heavy Pattern 150 Catalog to confirm full coupling figures, stainless steel materials, and threaded fitting information. The pipe chart can help confirm common pipe diameters and wall thicknesses for compatible piping.
Need Help Selecting a 150# Stainless Steel Full Coupling?
Need help confirming pipe size, 304 or 316 stainless steel, NPT connection requirements, or service compatibility? The GetPipe.com Team can help you select the correct full coupling.
Frequently Asked Questions
What is a stainless steel full coupling used for?
A full coupling joins two compatible male-threaded pipes, nipples, or fittings in a straight in-line connection.
What figure numbers identify this coupling?
SCI identifies the heavy-pattern threaded full coupling as FIG S3114CP for 304 stainless steel and FIG S3116CP for 316 stainless steel.
What stainless steel grades are available?
The coupling is available in 304 stainless steel ASTM A351 CF8 and 316 stainless steel ASTM A351 CF8M configurations.
What type of connections does the coupling use?
The full coupling uses female NPT threaded connections on both ends.
What standard applies to the NPT threads?
The NPT threads conform to ASME B1.20.1.
Is 150# the same as a 150 PSI working pressure?
No. Class 150 identifies the fitting pressure class and should not be interpreted as a universal 150 PSI working-pressure rating.
How is a full coupling different from a half coupling?
A full coupling joins two male-threaded components, while a half coupling is typically used where only one coupling-side connection is required.
What should I confirm before ordering?
Confirm pipe size, stainless steel grade, NPT connection requirements, process media, and system operating conditions.
Important Ordering & Installation Notes
- Confirm the required pipe size.
- Select 304 or 316 stainless steel.
- Verify service compatibility.
- Use suitable thread sealant.
- Avoid excessive thread torque.