ASC
150# Stainless Steel Square Head Plug
- SKU:
- S3114SP & S3116SP
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
150# Stainless Steel Square Head Plug
SCI Heavy Pattern 150# Stainless Steel Square Head Plugs provide a durable male-threaded closure for compatible female NPT openings in stainless steel piping systems.
Available in 304 and 316 stainless steel, these cast heavy-pattern plugs feature male NPT threads and a square head that provides convenient wrenching surfaces for installation and removal.
Product Highlights
- SCI Heavy Pattern Class 150 fitting
- 304 and 316 stainless steel options
- Male NPT threaded connection
- Square head for wrench engagement
- Heavy-pattern cast construction
- Threaded piping closure design
Technical Specifications
| Product Type | Stainless Steel Square Head Plug |
|---|---|
| Brand | ASC / SCI |
| Figure | S3114SP / S3116SP |
| 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 | Male NPT |
| Thread Standard | ASME B1.20.1 |
| Head Style | Square Head |
| Function | Threaded Opening Closure |
Construction Details
SCI Heavy Pattern Class 150 square head plugs 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 male NPT connection threads directly into a compatible female-threaded fitting, valve, manifold, or other piping component to provide a removable closure.
The integral square head provides flat wrenching surfaces for controlled installation and removal during piping assembly, inspection, or maintenance.
Design & Typical Applications
Plug Design
- Heavy-pattern cast body
- Male NPT connection
- Square wrenching head
- Removable closure design
- 304 or 316 stainless steel
Typical Applications
- Industrial process piping
- Water and utility systems
- Agricultural piping systems
- Petroleum transfer piping
- Chemical process systems
Installation & Selection Considerations
- Confirm the required thread size.
- Select the proper stainless grade.
- Use compatible thread sealant.
- Use the square head for wrenching.
- Avoid excessive tightening torque.
Use the SCI Heavy Pattern 150 Catalog to confirm square head plug 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 Square Head Plug?
Need help confirming thread size, 304 or 316 stainless steel, NPT requirements, or service compatibility? The GetPipe.com Team can help you select the correct square head plug.
Frequently Asked Questions
What is a 150# stainless steel square head plug used for?
It is used to close a compatible female NPT opening in a threaded piping system.
What figure numbers identify this square head plug?
SCI identifies the Heavy Pattern Square Head Plug as FIG S3114SP for 304 stainless steel and FIG S3116SP for 316 stainless steel.
What stainless steel grades are available?
The plug is available in 304 stainless steel ASTM A351 CF8 and 316 stainless steel ASTM A351 CF8M configurations.
What type of connection does this plug use?
The square head plug uses a male NPT threaded connection.
Why does the plug have a square head?
The square head provides flat wrenching surfaces for tightening and removing the plug.
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.
What should I confirm before ordering?
Confirm thread size, stainless steel grade, NPT requirements, process media, and system operating conditions.
Important Ordering & Installation Notes
- Confirm the required thread size.
- Select 304 or 316 stainless steel.
- Verify service compatibility.
- Use suitable thread sealant.
- Avoid excessive thread torque.
