Overview
The Mueller Steam 8PEC CO 791 duplex strainer Class 150 is engineered for continuous-duty filtration in industrial piping systems. This Class 150 unit features a welded carbon steel body (WCB) rated for 150 psig, making it suitable for steam, water, and other process fluids in demanding applications. The duplex design allows alternating basket operation, eliminating the need to shut down flow for basket cleaning and maintenance.
Key Features
- Duplex (dual-basket) configuration enables one basket to be serviced while the other remains in service
- Welded carbon steel body (WCB) construction for superior durability and corrosion resistance
- Class 150 pressure rating (150 psig) suitable for medium to high-pressure applications
- Two-inch nominal connection size for standard industrial piping
- Low-pressure drop design minimizes energy consumption in continuous-duty service
- Replaceable basket elements for easy maintenance and cost-effective operation
Technical Specifications
- Manufacturer: Mueller Steam Specialty
- Model: 8PEC CO 791
- Body Material: Welded Carbon Steel (WCB)
- Pressure Rating: Class 150 (150 psig)
- Connection Size: 2 inches nominal
- Design Type: Duplex (dual-basket)
- Temperature Range: Suitable for steam and water service
- Basket Mesh: 100 micron (typical)
- Operation Type: Basket strainer with isolation valves for alternating cleaning
Typical Applications
Mueller Steam duplex strainers are employed in:
- Steam systems where continuous operation is critical and downtime must be minimized
- Industrial cooling water and process fluid lines
- Compressor inlet and discharge protection
- Condenser and heat exchanger feed lines
- Pump inlet protection in continuous-duty applications
- Steam trap and regulator inlet filtration
Compatibility & Replacements
Compatible With
- Industrial steam systems and piping networks
- Water circulation and cooling systems
- Compressed air and inert gas applications (where pressure rating is observed)
- Standard Class 150 flanged and threaded connections
- Mueller control accessories and isolation valve assemblies
Replaces / Drop-In Replacement For
Verify with your system integrator or Mueller Steam Specialty for specific model interchangeability before ordering. The 8PEC CO 791 is a Class 150 WCB duplex strainer; ensure your current unit operates at 150 psig with a 2-inch connection before substituting.
Works With
- Mueller Steam isolation and bypass valves
- Standard duplex strainer manifold systems
- Industrial pressure gauges and differential indicators
- Steam trap and regulator inlet assemblies
- ASME-compliant piping systems rated for Class 150 service




































