Merit Brass
150# Stainless Steel FF Lap Joint Flange
- SKU:
- SFLJSS
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description
150# Stainless Steel FF (Flat Faced) Lap Joint Flange
150# Stainless Steel Flat Face Lap Joint Flanges provide a versatile flange connection for stainless steel piping systems using a compatible lap joint stub end. The lap joint configuration allows the flange to rotate independently around the stub end, helping simplify bolt-hole alignment during assembly and maintenance.
Manufactured from 304L or 316L forged stainless steel, these Class 150 flanges feature a flat face configuration and dimensions conforming to ASME B16.5. Their combination of corrosion resistance, installation flexibility, and forged construction makes them well suited for industrial and process piping applications.
Product Highlights
- 150# / Class 150 flange pattern
- Flat Face (FF) lap joint flange design
- Designed for use with a compatible lap joint stub end
- Rotating flange design simplifies bolt-hole alignment
- Available in 304L and 316L stainless steel
- Forged stainless steel construction
- Material conforms to ASME A182
- Flange dimensions conform to ASME B16.5
- Corrosion-resistant construction for demanding piping systems
- Manufactured in an ISO 9001:2008 certified facility
Lap Joint Flange Design
A lap joint flange is designed to work with a compatible stub end. The flange remains free to rotate around the piping assembly, allowing the bolt holes to be aligned with the mating flange during installation.
This configuration can be particularly useful where piping systems require frequent disassembly, inspection, maintenance, or precise flange alignment.
Flat Face Configuration
This flange uses a Flat Face (FF) configuration. The flange face should be matched with the appropriate mating flange and gasket arrangement for the piping system.
Always confirm flange facing, gasket requirements, bolting, and mating component compatibility before installation.
Technical Specifications
| Product Type | Flat Face Lap Joint Flange |
|---|---|
| Pressure Class | 150# / Class 150 |
| Flange Pattern | 150# |
| Flange Face | Flat Face (FF) |
| Flange Style | Lap Joint |
| Available Materials | 304L Stainless Steel & 316L Stainless Steel |
| Construction | Forged Stainless Steel |
| Material Standard | ASME A182 |
| Dimensional Standard | ASME B16.5 |
| Manufacturing Quality | ISO 9001:2008 Certified Facility |
304L vs. 316L Stainless Steel
304L Stainless Steel
- Strong general-purpose corrosion resistance
- Common choice for commercial and industrial piping
- Suitable for many water and process applications
- Low-carbon stainless steel grade
316L Stainless Steel
- Enhanced corrosion resistance in demanding environments
- Commonly selected for marine and chloride-exposed applications
- Suitable for many chemical and process environments
- Low-carbon stainless steel grade
Forged Stainless Steel Construction
These lap joint flanges are manufactured from forged stainless steel material conforming to ASME A182. Forged construction provides the strength, durability, and dimensional consistency required for industrial piping components.
Flange dimensions conform to ASME B16.5 for applicable Class 150 flange systems.
Common Applications
Industrial & Process Piping
- Industrial piping systems
- Process piping
- Water treatment systems
- Mechanical equipment connections
- Systems requiring periodic disassembly
Corrosion-Resistant Systems
- Stainless steel piping systems
- Chemical processing
- Food processing
- Marine applications
- General corrosion-resistant piping
Important Ordering Notes
- Product type: Flat Face (FF) lap joint flange.
- Flange pattern: 150# / Class 150.
- Available in 304L and 316L stainless steel.
- Designed for use with a compatible lap joint stub end.
- Forged stainless steel material conforms to ASME A182.
- Forged stainless steel flange dimensions conform to ASME B16.5.
- Manufactured in an ISO 9001:2008 certified facility.
- Confirm nominal pipe size and compatible stub end before ordering.
- Verify flange facing, gasket, bolting, and mating flange compatibility before installation.
- Confirm the appropriate 304L or 316L grade for the intended service environment.
- Refer to the Stainless Steel ANSI Flange Dimensions PDF for dimensional information.
Product Documents
Frequently Asked Questions
What is a lap joint flange?
A lap joint flange is used with a compatible stub end. The flange can rotate around the piping assembly, making it easier to align the bolt holes with the mating flange.
What does FF mean?
FF means Flat Face. The flange uses a flat facing configuration rather than a raised face.
What pressure class is this flange?
This flange uses a 150# / Class 150 flange pattern.
Does a lap joint flange require a stub end?
Lap joint flanges are designed to be used with a compatible lap joint stub end. Confirm the correct stub end and pipe size for the piping system before ordering.
What is the advantage of a lap joint flange?
The flange can rotate independently around the stub end, making bolt-hole alignment easier during installation. This design can also be useful in systems that require periodic disassembly or maintenance.
What stainless steel grades are available?
These flanges are available in 304L and 316L stainless steel.
What is the difference between 304L and 316L stainless steel?
Both provide corrosion resistance. 316L is generally selected for more demanding environments, including many marine, chloride-exposed, and chemical-processing applications.
What material standard applies to these flanges?
The forged stainless steel material conforms to ASME A182.
What dimensional standard applies?
The forged stainless steel flange dimensions conform to ASME B16.5.
Where can I find flange dimensions?
Use the Stainless Steel ANSI Flange Dimensions PDF in the Product Documents section above to review dimensional information before ordering.
What applications are lap joint flanges commonly used for?
Lap joint flanges are commonly used in industrial and process piping systems, particularly where easier alignment, corrosion resistance, or periodic disassembly is beneficial.
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