Service Metal
304 Stainless Steel 150# Socket Weld Union
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
304 Stainless Steel 150# Socket Weld Union
304 Stainless Steel 150# Socket Weld Unions provide a serviceable connection for welded stainless steel piping systems. The union design allows connected piping sections to be separated for maintenance, equipment replacement, or system modifications without cutting the adjoining pipe.
Available in nominal pipe sizes from 1/2" through 1-1/2", these SP114 pattern fittings feature 304 stainless steel construction and socket-weld connections on both ends.
Product Highlights
- 304 stainless steel construction
- 150 lb class fitting
- Socket-weld union configuration
- Socket-weld connections on both ends
- SP114 pattern
- Creates a serviceable connection in welded piping systems
- Allows piping sections to be separated for maintenance or equipment access
- Suitable for compatible stainless steel piping systems
- Available in multiple nominal pipe sizes
- Manufactured by Service Metal
Technical Specifications
| Manufacturer | Service Metal |
|---|---|
| Product Type | Socket Weld Union |
| Material | 304 Stainless Steel |
| Pressure Class | 150 lb |
| Connection Type | Socket Weld x Socket Weld |
| Pattern | SP114 Pattern |
| Available Sizes | 1/2", 3/4", 1", 1-1/4" and 1-1/2" |
| Series | SSPSW4U |
304 Stainless Steel Construction
304 stainless steel provides corrosion resistance and durability for industrial, commercial, mechanical, and process piping applications where this material grade is compatible with the service conditions.
Material suitability should be confirmed based on the conveyed media, operating temperature, pressure, surrounding environment, and applicable piping specifications.
Why Use a Socket Weld Union?
Serviceable Piping Connection
- Allows connected piping sections to be separated
- Provides access for maintenance and equipment replacement
- Useful near valves, pumps, filters, and other serviceable equipment
- Reduces the need to cut adjoining piping during service
- Provides a removable union joint between welded pipe connections
Socket Weld Connections
- Socket-weld connection on each end
- Pipe inserts into the fitting socket before welding
- Designed for compatible stainless steel piping
- Provides welded connections on both sides of the union
- Suitable for fabricated and field-installed piping assemblies
Available Sizes
- 1/2"
- 3/4"
- 1"
- 1-1/4"
- 1-1/2"
Performance Features
150 lb Class
Designed as a 150 lb class stainless steel socket-weld fitting for compatible piping applications.
Socket Weld Design
Socket-weld ends provide welded connections for compatible stainless steel piping systems.
Removable Union Joint
The union design allows the piping connection to be separated for maintenance, equipment access, or system modifications without cutting the adjoining pipe.
Common Applications
Industrial & Process Piping
- Industrial piping systems
- Process piping
- Utility piping
- Pump connections
- Valve connections
- Equipment service points
Commercial & Mechanical Piping
- Commercial mechanical systems
- Stainless steel piping assemblies
- Equipment rooms
- Filter and regulator connections
- Maintenance-access connections
- Welded piping systems
Selecting the Correct Union
Select the union according to the nominal pipe size required by the piping system. These fittings are manufactured from 304 stainless steel and use socket-weld connections on both ends.
A union is particularly useful where a piping connection may need to be separated later for equipment maintenance, component replacement, or system modifications.
Ask Willy: Need Pipe Size Help?
Use our common pipe diameters and wall thickness chart to help confirm pipe sizing before ordering. Additional dimensional and product information is available in the socket weld union specification sheet, along with a Certificate of Conformance.
Product Documentation
Product Specification Sheet
Review dimensional and product information for the 150# 304 stainless steel socket weld union.
Pipe Size Chart
Reference common pipe diameters and wall thicknesses to help confirm the correct nominal pipe size for your application.
Certificate of Conformance
Certificate of Conformance documentation is available for product and project documentation requirements.
Installation & Selection Guidance
- Confirm the required nominal pipe size before ordering.
- Confirm that 304 stainless steel is compatible with the intended service.
- Verify that socket-weld connections are required for the piping system.
- Confirm that a union is appropriate where future piping disassembly may be required.
- Prepare pipe and fitting surfaces according to the applicable welding procedure.
- Maintain appropriate insertion clearance when assembling socket-weld joints.
- Use welding procedures appropriate for 304 stainless steel piping components.
- Position the union so the joint remains accessible for future service.
- Confirm pressure and temperature requirements for the complete piping system.
- Inspect completed welds according to applicable project requirements.
- Installation should be performed by qualified personnel.
- Follow applicable piping codes, specifications, and welding procedures.
Need Help Selecting Stainless Steel Fittings?
Our industrial PVF specialists can help review your pipe size, connection requirements, stainless steel material, and application before you order.
Frequently Asked Questions
What is a socket weld union used for?
A socket weld union joins two sections of piping while allowing the connection to be separated later for maintenance, equipment replacement, or system modifications.
What material are these unions made from?
These socket weld unions are manufactured from 304 stainless steel.
What connection type does this union use?
The union has socket-weld connections on both ends.
What pressure class are these fittings?
These stainless steel socket weld unions are 150 lb class fittings.
Why use a union instead of a coupling?
A union allows the piping connection to be separated for service or equipment access. A standard full coupling creates an inline connection that cannot be mechanically separated after the socket-weld joints are completed.
What sizes are available?
Available nominal pipe sizes are 1/2", 3/4", 1", 1-1/4", and 1-1/2".
Is this fitting threaded?
No. These unions use socket-weld connections rather than NPT threaded connections.
Are these unions suitable for every fluid or process?
Material and fitting suitability depend on the media, operating pressure, temperature, piping specification, and other system requirements. Confirm that 304 stainless steel and a 150 lb socket weld union are appropriate for the intended application.
Important Ordering Notes
- 304 stainless steel socket weld union
- 150 lb class fitting
- Socket-weld connections on both ends
- SP114 pattern
- Available in multiple nominal pipe sizes
- Not an NPT threaded union
- Select the correct nominal pipe size before ordering.
- Verify 304 stainless steel compatibility with the intended application.
- Confirm system pressure, temperature, welding, and installation requirements.
- Installation should be performed by qualified personnel in accordance with applicable piping codes and procedures.
