Pro-Flex
Pro-Flex Appliance, Fireplace & Meter Stub Outs
- Availability:
- Usually Ships in 5-7 Business Days
- Weight:
- 0.00 LBS
Description
Pro-Flex Appliance, Fireplace & Meter Stub Outs
Pro-Flex Stub Outs provide rigid termination and transition points for Pro-Flex gas piping installations. The product family includes angled appliance stubs, fireplace stubs, and straight meter stubs for connecting flexible gas piping systems to threaded valves, equipment, meters, and other compatible gas-system components.
Available in sizes from 1/2" through 1-1/4", these stub-out configurations include 90-degree appliance connections, a fireplace termination, and 12-inch straight meter stubs. Select models are also available with a Pro-Flex female fitting attached for direct connection to compatible CSST.
Product Highlights
- Stub-out fittings for Pro-Flex gas piping installations
- Appliance, fireplace, and meter configurations available
- Tube sizes from 1/2" through 1-1/4"
- 90-degree appliance stub configurations
- Models available with attached Pro-Flex female fitting
- Straight 12" meter stubs available in four sizes
- Provides rigid threaded termination points for flexible gas piping
- Multiple MIP and Pro-Flex connection configurations
- Suitable for properly designed natural-gas and propane piping systems
Available Models
| Part Number | Tube Size | Description |
|---|---|---|
| PFAS-12 | 1/2" | 1/2" Appliance Stub - 1/2" MIP x 1/2" MIP 90° |
| PFAS-12F | 1/2" | 1/2" Appliance Stub - 1/2" MIP x 1/2" PF 90° (Female Fitting Attached) |
| PFAS-34 | 3/4" | 3/4" Appliance Stub - 3/4" MIP x 3/4" MIP 90° |
| PFAS-34F | 3/4" | 3/4" Appliance Stub - 3/4" MIP x 3/4" PF 90° (Female Fitting Attached) |
| PFFS-12A | 1/2" | 1/2" Fireplace Stub - 1/2" MIP x 1/2" MIP 72.5° |
| PFMS-1212 | 1/2" | 1/2" Meter Stub x 12" Length (1/2" MIP x 1/2" MIP Straight) |
| PFMS-3412 | 3/4" | 3/4" Meter Stub x 12" Length (3/4" MIP x 3/4" MIP Straight) |
| PFMS-0112 | 1" | 1" Meter Stub x 12" Length (1" MIP x 1" MIP Straight) |
| PFMS-011412 | 1-1/4" | 1-1/4" Meter Stub x 12" Length (1-1/4" MIP x 1-1/4" MIP Straight) |
Technical Specifications
| Manufacturer | Pro-Flex |
|---|---|
| Product Type | Gas Piping Stub Outs |
| Stub Types | Appliance Stub, Fireplace Stub and Meter Stub |
| Available Sizes | 1/2", 3/4", 1" and 1-1/4" |
| Appliance Stub Configuration | 90° |
| Meter Stub Length | 12" |
| Meter Stub Configuration | Straight MIP x MIP |
| Available Connections | MIP x MIP and MIP x Pro-Flex |
| Primary Application | Gas Piping Termination, Appliance Connections and Meter Connections |
What Is a Gas Piping Stub Out?
A gas piping stub out provides a rigid transition or termination point within a flexible gas piping system. It can be used where CSST must transition to a threaded appliance connection, gas valve, meter connection, fireplace connection, or other compatible gas-system component.
Unlike flexible tubing, the stub provides a defined rigid section at the connection point. This can make it easier to position and support threaded components at appliance, meter, and equipment locations.
Pro-Flex offers several stub configurations so installers can select the connection style, size, angle, and length required by the piping layout.
Appliance Stub Options
PFAS-12 – 1/2" MIP x MIP
The PFAS-12 is a 1/2" appliance stub with a 1/2" MIP x 1/2" MIP 90° configuration. It provides a rigid right-angle threaded transition for compatible gas piping components.
PFAS-12F – 1/2" MIP x PF
The PFAS-12F is a 1/2" appliance stub with a 1/2" MIP x 1/2" Pro-Flex 90° configuration and a female fitting attached for connection to compatible Pro-Flex CSST.
PFAS-34 – 3/4" MIP x MIP
The PFAS-34 is a 3/4" appliance stub with a 3/4" MIP x 3/4" MIP 90° configuration for larger gas piping connections.
PFAS-34F – 3/4" MIP x PF
The PFAS-34F is a 3/4" appliance stub with a 3/4" MIP x 3/4" Pro-Flex 90° configuration and a female fitting attached.
Fireplace Stub
PFFS-12A – 1/2" Fireplace Stub
The supplied product data identifies the PFFS-12A as a 1/2" fireplace stub with 1/2" MIP x 1/2" MIP connections and a 72.5° configuration.
This type of stub provides a rigid angled termination for fireplace and hearth gas piping installations where a threaded connection must be positioned near the appliance or valve location.
Meter Stub Options
PFMS-1212 – 1/2"
The PFMS-1212 is a 12" long straight meter stub with 1/2" MIP x 1/2" MIP connections.
PFMS-3412 – 3/4"
The PFMS-3412 is a 12" long straight meter stub with 3/4" MIP x 3/4" MIP connections.
PFMS-0112 – 1"
The PFMS-0112 is a 12" long straight meter stub with 1" MIP x 1" MIP connections.
PFMS-011412 – 1-1/4"
The PFMS-011412 is a 12" long straight meter stub with 1-1/4" MIP x 1-1/4" MIP connections.
Appliance Stub vs. Meter Stub
Appliance Stubs
- 90-degree configuration
- Designed for equipment and appliance termination points
- Available in 1/2" and 3/4" sizes
- MIP x MIP models available
- Models with attached Pro-Flex female fitting available
Meter Stubs
- Straight configuration
- 12" overall listed length
- MIP x MIP connections
- Available from 1/2" through 1-1/4"
- Designed for rigid transition locations at gas-meter piping
Common Applications
Appliance & Equipment Connections
- Gas ranges
- Water heaters
- Furnaces and boilers
- Gas-fired equipment
- Appliance rough-in locations
Meter & Hearth Connections
- Gas meter piping
- Fireplace rough-ins
- Hearth gas piping
- Rigid CSST termination points
- Threaded transitions from flexible gas tubing
Choosing the Correct Stub Out
| Part Number | Size | Configuration | Stub Type |
|---|---|---|---|
| PFAS-12 | 1/2" | 1/2" MIP x 1/2" MIP 90° | Appliance |
| PFAS-12F | 1/2" | 1/2" MIP x 1/2" PF 90° | Appliance |
| PFAS-34 | 3/4" | 3/4" MIP x 3/4" MIP 90° | Appliance |
| PFAS-34F | 3/4" | 3/4" MIP x 3/4" PF 90° | Appliance |
| PFFS-12A | 1/2" | 1/2" MIP x 1/2" MIP 72.5° | Fireplace |
| PFMS-1212 | 1/2" | 1/2" MIP x 1/2" MIP x 12" | Meter |
| PFMS-3412 | 3/4" | 3/4" MIP x 3/4" MIP x 12" | Meter |
| PFMS-0112 | 1" | 1" MIP x 1" MIP x 12" | Meter |
| PFMS-011412 | 1-1/4" | 1-1/4" MIP x 1-1/4" MIP x 12" | Meter |
Pro-Flex CSST System Compatibility
Pro-Flex manufactures a corrugated stainless steel tubing system for natural-gas and propane piping applications. The manufacturer's product guide lists appliance, fireplace, and meter stubs within its CSST termination options.
Stub-outs should be matched to the applicable tubing size, fitting configuration, and downstream threaded connection. Always verify compatibility with the specific Pro-Flex system components being installed.
Installation Considerations
- Select the stub type according to the intended appliance, fireplace, or meter connection.
- Confirm the nominal gas piping size before ordering.
- Verify all MIP and Pro-Flex connection sizes.
- Use compatible Pro-Flex fittings and system components where applicable.
- Properly secure and support the stub and connected piping.
- Follow current Pro-Flex installation instructions for CSST connections.
- Protect flexible gas tubing against physical damage where required.
- Leak-test completed gas piping connections according to applicable requirements.
- Follow applicable fuel-gas codes and local installation requirements.
- Installation should be completed by qualified gas-piping personnel.
Need Help Selecting a Pro-Flex Stub Out?
Our industrial PVF specialists can help review your gas piping size, appliance or meter connection, required stub configuration, threaded connection sizes, and Pro-Flex CSST requirements before you order.
Frequently Asked Questions
What is a Pro-Flex stub out used for?
A stub out provides a rigid termination or transition point between flexible gas piping and compatible threaded appliances, valves, meters, or other gas-system components.
What appliance stub sizes are available?
The listed appliance stub models are available in 1/2" and 3/4" sizes.
What is the difference between PFAS-12 and PFAS-12F?
PFAS-12 has 1/2" MIP x 1/2" MIP connections, while PFAS-12F has a 1/2" MIP connection and an attached 1/2" Pro-Flex female fitting. Both are 90-degree appliance stubs.
What is the difference between PFAS-34 and PFAS-34F?
PFAS-34 has 3/4" MIP x 3/4" MIP connections, while PFAS-34F has a 3/4" MIP connection and an attached 3/4" Pro-Flex female fitting.
How long are the Pro-Flex meter stubs?
The PFMS meter stub models listed here are 12 inches long.
What meter stub sizes are available?
The listed meter stubs are available in 1/2", 3/4", 1", and 1-1/4" sizes.
Are the meter stubs angled?
No. The listed PFMS meter stubs are straight MIP x MIP configurations.
What is PFFS-12A?
The supplied product data identifies PFFS-12A as a 1/2" fireplace stub with 1/2" MIP x 1/2" MIP connections and a 72.5-degree configuration.
Can stub outs be used with natural gas and propane?
Pro-Flex gas piping products are intended for natural-gas and propane systems. Verify that the selected stub and all connected components are suitable for the specific application.
Who should install Pro-Flex gas piping stub outs?
Gas piping components should be installed by qualified personnel according to current manufacturer instructions and applicable fuel-gas codes.
Important Ordering Notes
- PFAS-12 is a 1/2" MIP x 1/2" MIP 90° appliance stub.
- PFAS-12F is a 1/2" MIP x 1/2" PF 90° appliance stub with female fitting attached.
- PFAS-34 is a 3/4" MIP x 3/4" MIP 90° appliance stub.
- PFAS-34F is a 3/4" MIP x 3/4" PF 90° appliance stub with female fitting attached.
- The supplied product data identifies PFFS-12A as a 1/2" MIP x 1/2" MIP 72.5° fireplace stub.
- PFMS meter stubs are 12" long and use same-size MIP connections at both ends.
- Meter stub sizes are available from 1/2" through 1-1/4".
- Confirm the exact stub configuration and connection sizes before ordering.
- Follow current Pro-Flex installation instructions and applicable fuel-gas codes.
- Installation should be completed by qualified gas-piping personnel.
