Merit Brass
150# Stainless Steel Flat Face Slip On Flange
- SKU:
- 450-650
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
150# Stainless Steel Flat Face Slip On Flange
150# Stainless Steel Flat Face Slip-On Flanges are designed to slide over compatible pipe before welding, providing a bolted flange connection for commercial, industrial, water, and process piping systems. The slip-on configuration simplifies alignment during installation, while the flat-face sealing surface is intended for use with compatible flat-face mating flanges and gaskets.
These flanges are available in 304 and 316 stainless steel, use a 150# pattern, and feature an MSS flat-faced configuration. Material conforms to ASTM A351, and the manufacturing facility is listed as ISO 9001:2008.
Product Highlights
- 150# stainless steel slip-on flange
- MSS flat-face configuration
- Designed to slide over compatible pipe before welding
- Available in 304 and 316 stainless steel
- Material conforms to ASTM A351
- Flat-face sealing surface
- Provides a bolted flange connection
- Simplifies pipe alignment during installation
- Corrosion-resistant stainless steel construction
- Suitable for commercial and industrial piping systems
- Manufactured in an ISO 9001:2008 facility
Technical Specifications
| Product Type | Slip-On Flange |
|---|---|
| Pressure Class | 150# |
| Face Style | Flat Face (FF) |
| Flange Pattern | 150# |
| Material | Stainless Steel |
| Available Grades | 304 & 316 Stainless Steel |
| Material Standard | ASTM A351 |
| Pipe Connection | Slip-On / Welded |
| Flange Connection | Bolted |
| Manufacturing Facility | ISO 9001:2008 |
Slip-On Flange Construction
A slip-on flange is designed with a bore large enough to slide over compatible pipe before being positioned and welded in place.
This configuration simplifies alignment during fabrication because the flange can be positioned on the pipe before the welds are completed. Once installed, the flange provides a bolted connection to a compatible mating flange, valve, or equipment connection.
These flanges are manufactured from stainless steel material conforming to ASTM A351 and are available in 304 and 316 stainless steel grades.
Why Choose a Stainless Steel Slip-On Flange?
Installation & Alignment
- Slides over compatible pipe before welding
- Allows flange position to be adjusted before final welding
- Simplifies alignment with mating equipment or piping
- Provides a permanent welded pipe attachment
- Creates a serviceable bolted flange joint
Corrosion-Resistant Construction
- Available in 304 and 316 stainless steel
- Suitable for demanding piping environments
- Resists rust and scale formation
- Useful in commercial and industrial piping systems
- Provides long service-life potential in compatible applications
Flat Face Flange Design
The flat-face sealing surface extends across the flange face rather than using a raised sealing area. This configuration is intended for use with compatible flat-face mating flanges and suitable gasket materials.
Proper gasket selection, bolt pattern compatibility, bolt torque, and mating flange condition are important for achieving a dependable flange connection.
Slip-On Flange vs. Threaded Flange
Slip-On Flange
- Slides over the pipe
- Attached to the pipe by welding
- Allows positioning before final weld completion
- Does not require threaded pipe
- Provides a bolted flange connection after welding
Threaded Flange
- Includes a female threaded bore
- Threads onto compatible male-threaded pipe
- Does not require flange-to-pipe welding
- Requires compatible pipe threads
- Different installation method from a slip-on flange
304 vs. 316 Stainless Steel
304 Stainless Steel
304 stainless steel is commonly selected for general-purpose commercial and industrial piping systems requiring corrosion-resistant stainless steel construction.
316 Stainless Steel
316 stainless steel is commonly selected where increased corrosion resistance is required, including more demanding chemical, process, marine, or chloride-exposed service conditions.
Common Applications
Commercial & General Piping
- Water piping systems
- Commercial plumbing systems
- Mechanical piping installations
- Valve and equipment connections
- Serviceable bolted flange joints
Industrial & Process Applications
- Industrial process piping
- Chemical processing systems
- Water treatment applications
- Corrosion-resistant piping systems
- Equipment and vessel connections
Installation & Selection Guidance
- Confirm the required nominal flange and pipe size before ordering.
- Select the appropriate 304 or 316 stainless steel grade for the operating environment.
- Verify that the flange bore is compatible with the pipe outside diameter.
- Confirm that the 150# bolt pattern matches the mating flange or equipment connection.
- Use a compatible flat-face mating flange and gasket.
- Position and align the flange before completing the welds.
- Use appropriate welding procedures for the stainless steel grade and piping system.
- Confirm bolt size, bolt pattern, and gasket requirements before final assembly.
- Use an appropriate flange bolt tightening sequence to achieve even gasket compression.
- Verify pressure, temperature, and media compatibility for the complete piping system.
- Installation should be completed in accordance with applicable piping codes, welding procedures, and project requirements.
Product Documents
Stainless Steel ANSI Flange Dimensions
Review the manufacturer dimensional reference for stainless steel flanges, including applicable slip-on flange dimensions and bolt-pattern information.
Flange Selection Reference
Use the dimensional document to confirm nominal size, outside diameter, bolt circle, bolt-hole configuration, bore, thickness, and other applicable flange dimensions before ordering.
Need Help Selecting a Stainless Steel Slip-On Flange?
Our industrial PVF specialists can help review your pipe size, stainless steel grade, flange pattern, mating flange, gasket, and welding requirements before you order.
Frequently Asked Questions
What is a slip-on flange?
A slip-on flange is designed to slide over compatible pipe before being positioned and welded in place.
What pressure class is this flange?
This flange uses a 150# pattern.
What does FF mean?
FF means flat face. The sealing surface extends across the flange face rather than using a raised sealing area.
What stainless steel grades are available?
These flanges are available in 304 and 316 stainless steel.
What material specification applies?
The supplied product information states that the material conforms to ASTM A351.
Does a slip-on flange need to be welded?
Yes. The flange slides over the pipe and is then secured using the appropriate welding procedure for the piping system.
Why use a slip-on flange?
The slip-on design allows the flange to be positioned and aligned on the pipe before welding, which can simplify fabrication and mating-flange alignment.
What gasket should be used?
Gasket selection depends on the mating flange, system media, pressure, temperature, and applicable piping requirements. Confirm that the gasket is suitable for a flat-face flange connection.
What is the difference between 304 and 316 stainless steel?
Both are corrosion-resistant stainless steel grades. 316 is commonly selected for more demanding chemical, marine, chloride-exposed, and corrosive service environments.
Where can I find flange dimensions?
Use the Stainless Steel ANSI Flange Dimensions document in the Product Documents section above.
Important Ordering Notes
- Product is a 150# stainless steel flat-face slip-on flange.
- MSS flat-faced configuration.
- Available in 304 and 316 stainless steel.
- Material conforms to ASTM A351.
- Manufacturing facility is listed as ISO 9001:2008.
- Designed to slide over compatible pipe before welding.
- Confirm nominal flange and pipe size before ordering.
- Confirm the 150# bolt pattern matches the mating flange or equipment connection.
- Use a compatible flat-face gasket and mating flange.
- Verify flange bore and pipe outside diameter compatibility before installation.
- Verify system pressure, temperature, and media compatibility before use.
- Refer to the Stainless Steel ANSI Flange Dimensions document for applicable dimensional information.
