Description
Cast Iron Reducing Cross
ASC / SCI Fig. 3360R Cast Iron Reducing Crosses provide four-way threaded branch connections with reduced outlets for compatible Class 125 cast iron piping systems.
The Fig. 3360R Reducing Cross is manufactured from ASTM A126 cast iron with NPT threads conforming to ASME B1.20.1. ASC identifies the fitting as Class 125, with dimensions in accordance with ASME B16.4 and black or hot-dip galvanized finish options.
Product Highlights
- ASC / SCI Fig. 3360R reducing cross
- Class 125 cast iron threaded fitting
- Four-way reducing branch configuration
- ASTM A126 cast iron construction
- Female NPT threaded connections
- Threads conform to ASME B1.20.1
- Dimensions conform to ASME B16.4 Class 125
- Black or hot-dip galvanized finish
- Galvanized finish per ASTM A153 Class A
- UL / ULC Listed and FM Approved fitting family
Technical Specifications
| Product Type | Cast Iron Threaded Reducing Cross |
|---|---|
| Brand | ASC / SCI |
| Figure | 3360R |
| Pressure Class | Class 125 |
| Configuration | Reducing Cross |
| Material | ASTM A126 Cast Iron |
| Connection Type | Female NPT |
| Thread Standard | ASME B1.20.1 |
| Dimensional Standard | ASME B16.4 Class 125 |
| Finish | Black or Hot-Dip Galvanized |
| Galvanized Finish Standard | ASTM A153 Class A |
| Agency Approvals | UL / ULC Listed and FM Approved Fitting Family |
| Reference Working Pressure | 300 psi Based on Schedule 40 Pipe |
| Primary Function | Create Four-Way Threaded Piping Connections with Reduced Opposing Outlets |
Construction Details
The ASC / SCI Fig. 3360R Reducing Cross is manufactured from ASTM A126 cast iron for use in compatible Class 125 threaded piping systems.
The fitting provides four female NPT openings arranged in a cross configuration, with one opposing connection pair larger than the reduced opposing pair.
ASC identifies dimensions in accordance with ASME B16.4 Class 125 and NPT threads in accordance with ASME B1.20.1.
Class 125 Cast Iron Fitting
The Fig. 3360R belongs to ASC's Class 125 cast iron threaded fitting family.
The Class 125 designation establishes the dimensional and pressure-temperature framework associated with the fitting under ASME B16.4.
The complete piping system should be evaluated according to the rating of its lowest-rated pipe, fitting, valve, threaded joint, or other connected component.
Reducing Cross Configuration
A reducing cross combines a four-way piping junction with a reduction in connection size.
The fitting provides two opposing larger connections and two opposing reduced connections, allowing multiple threaded piping runs to intersect while transitioning to a smaller branch size.
This configuration can reduce the need for separate reducing fittings downstream of a standard equal cross.
Four-Way Threaded Connection
The cross provides four female NPT connections positioned around the fitting body.
Two opposing openings form one straight piping path, while the second opposing pair forms another path intersecting at 90 degrees.
The Fig. 3360R uses reduced connection sizes on one opposing pair to create the reducing configuration.
Main Run & Reduced Connections
Larger Connection Pair
- Opposing female NPT openings
- Forms the larger straight-through connection path
- Accepts compatible male-threaded piping
- Maintains the larger nominal connection size
- Part of the Fig. 3360R configuration
Reduced Connection Pair
- Opposing female NPT openings
- Smaller than the larger connection pair
- Creates the reducing cross configuration
- Accepts compatible male-threaded piping
- Provides reduced branch connections
Female NPT Connections
All four openings use female NPT threads.
Each connection is designed to receive a compatible male-threaded pipe, nipple, fitting, valve, or other NPT component.
The nominal connection sizes should be verified carefully because a reducing cross does not use the same size at all four openings.
ASME B1.20.1 Threads
ASC specifies the Fig. 3360R threads as NPT per ASME B1.20.1.
This tapered pipe-thread standard establishes the thread geometry used for compatible threaded piping connections.
Inspect both mating male threads and the fitting's female threads before assembly for damage, contamination, or deformation.
ASTM A126 Cast Iron
The reducing cross is manufactured from ASTM A126 cast iron.
This material is used in ASC's compatible Class 125 threaded cast iron fitting family.
Material suitability should be confirmed against the intended process media, operating conditions, surrounding environment, and adjoining piping materials.
ASME B16.4 Conformance
ASC identifies the dimensions of the Fig. 3360R as conforming to ASME B16.4 Class 125.
This standard provides the dimensional and pressure-temperature framework used for compatible cast iron threaded fittings.
Project requirements should be reviewed to confirm that Class 125 cast iron threaded fittings are appropriate for the intended installation.
Black Finish
A black finish is available for the Fig. 3360R Reducing Cross.
The standard finish can be used in compatible installations where an exterior galvanized coating is not required.
Finish selection should match the project specification, piping system, and service environment.
Hot-Dip Galvanized Finish
The reducing cross is also available with a hot-dip galvanized finish conforming to ASTM A153 Class A.
The galvanized coating provides additional exterior corrosion protection for compatible service environments.
Confirm that the galvanized configuration matches adjoining piping materials and project requirements.
Black vs. Galvanized
Black Cast Iron
- Standard cast iron finish
- No galvanized exterior coating
- Suitable for compatible service environments
- Same Fig. 3360R configuration
- Selected according to project requirements
Hot-Dip Galvanized
- ASTM A153 Class A finish
- Provides added exterior corrosion protection
- Useful for compatible exposed environments
- Same Fig. 3360R configuration
- Selected according to service conditions
Reducing Cross vs. Equal Cross
Reducing Cross
- Uses different nominal connection sizes
- Provides four threaded openings
- Combines branching and size reduction
- Female NPT connections
- This GetPipe.com product
Equal Cross
- Uses the same nominal size at all four openings
- Provides four-way branching
- No intentional connection-size reduction
- Different piping configuration
- Selected according to system layout
Reducing Cross vs. Reducing Tee
Reducing Cross
- Four threaded openings
- Creates two intersecting piping paths
- Reduced opposing connection pair
- Useful for four-way piping layouts
- This GetPipe.com product
Reducing Tee
- Three threaded openings
- Creates one 90-degree branch
- Reduced branch connection
- Different piping function
- Selected according to system layout
Thread Sealant Selection
A compatible thread sealant or PTFE sealing product may be used where appropriate for the piping application.
The sealing method should be compatible with cast iron, the process media, operating temperature, system pressure, and adjoining threaded materials.
Avoid excessive sealant application that could enter the piping system or prevent proper thread engagement.
Threaded Joint Assembly
Begin each male-threaded connection carefully to help ensure correct engagement with the female NPT threads.
The connected piping should be aligned with each fitting opening rather than being forced into position during tightening.
Avoid cross-threading and excessive torque that could damage the cast iron fitting or mating piping components.
UL / ULC & FM Approvals
ASC states that its cast iron threaded fittings are UL / ULC Listed and FM Approved.
Listings and approvals may include specific pressure limitations, pipe schedules, or installation conditions.
Where agency approval is required, confirm the current applicable listing and limitations for the specific piping application.
Working Pressure Considerations
The supplied Fig. 3360R submittal lists a 300 psi reference maximum working pressure for the configurations shown.
ASC notes that the working-pressure ratings are based on Schedule 40 pipe and that current UL / ULC and FM pressure ratings may vary with pipe schedule and applicable listing conditions.
The completed piping assembly should always be limited to the rating of its lowest-rated component.
Piping Alignment
Because the fitting connects piping in four directions, proper alignment is especially important during assembly.
Each connected pipe or component should line up naturally with its threaded opening before final tightening.
Do not use the cross to pull severely misaligned piping into position, as this can place unnecessary stress on the casting and threaded joints.
Typical Applications
Cast Iron Reducing Crosses can be used in compatible industrial, commercial, agricultural, construction, mechanical, utility, and general threaded piping systems requiring four-way branching with reduced connections.
Typical uses may include mechanical piping layouts, equipment piping, utility distribution, multi-directional branch connections, service lines, and other compatible Class 125 threaded piping assemblies.
Confirm material, finish, thread, pressure, temperature, and process compatibility before installation.
Installation & Selection Considerations
- Confirm the larger and reduced connection pairs match the intended four-way piping arrangement.
- Verify all mating components use compatible male NPT threads before beginning assembly.
- Select black or hot-dip galvanized finish according to the piping specification and service environment.
- Use compatible thread sealant and align each connected pipe before tightening to avoid excessive stress on the cross.
- Confirm Class 125 pressure-temperature requirements and applicable project or agency requirements before service.
Use the supplied ASC Fig. 3360R submittal to confirm the Class 125 reducing cross configuration, ASTM A126 cast iron material, ASME B1.20.1 NPT threads, larger and reduced connection arrangement, black or hot-dip galvanized finish, and applicable piping-system requirements before ordering.
Need Help Selecting a Cast Iron Reducing Cross?
Our fitting specialists can help confirm the required larger and reduced NPT connections, Class 125 requirements, black or galvanized finish, cast iron compatibility, thread sealing method, and four-way piping arrangement before you order.
Frequently Asked Questions
What is the ASC / SCI Fig. 3360R?
The Fig. 3360R is a Class 125 cast iron threaded reducing cross with four female NPT connections.
What material is the reducing cross made from?
ASC specifies ASTM A126 cast iron.
What thread type does the fitting use?
The Fig. 3360R uses NPT threads conforming to ASME B1.20.1.
What does a reducing cross do?
It creates four-way threaded piping connections while using different nominal connection sizes to provide a reduced opposing connection pair.
How is a reducing cross different from an equal cross?
An equal cross uses the same nominal size at all four openings, while a reducing cross incorporates smaller connections on one opposing pair.
How is a reducing cross different from a reducing tee?
A reducing cross has four openings and two intersecting piping paths, while a reducing tee has three openings and one perpendicular branch.
What finishes are available?
ASC identifies black and hot-dip galvanized finish options.
What standard applies to the galvanized finish?
The hot-dip galvanized finish conforms to ASTM A153 Class A.
What dimensional standard applies?
The Fig. 3360R dimensions conform to ASME B16.4 Class 125.
What working pressure does the supplied submittal show?
The supplied submittal lists a 300 psi reference maximum working pressure for the configurations shown, based on Schedule 40 pipe.
Are ASC cast iron threaded fittings UL / ULC Listed and FM Approved?
ASC states that its cast iron threaded fitting family is UL / ULC Listed and FM Approved. Applicable current listing details and limitations should be confirmed for the specific installation.
Should thread sealant be used?
Use a suitable thread-sealing method when required by the process media, system pressure, temperature, and project specification.
Why is alignment important with a reducing cross?
The fitting connects piping in four directions, so correct alignment helps prevent cross-threading and unnecessary mechanical stress on the cast iron body.
Which document should I use for product information?
Use the supplied ASC Fig. 3360R Reducing Cross Submittal as the primary manufacturer reference.
Important Ordering & Installation Notes
- This listing is for the ASC / SCI Fig. 3360R Class 125 Cast Iron Reducing Cross.
- The fitting provides four female NPT openings with one larger opposing connection pair and one reduced opposing connection pair.
- Confirm the required connection sizes, mating male NPT threads, and black or hot-dip galvanized finish before ordering.
- Use a compatible thread sealant and align all four piping connections carefully to avoid cross-threading or excessive stress on the casting.
- Installation should follow ASME B16.4, ASME B1.20.1, applicable pressure requirements, project specifications, and manufacturer instructions.
