

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The ASC Engineered Solutions 4X9.BCF is a 4-inch nominal companion flange designed for threaded pipe connections in commercial and industrial piping systems. Cast from gray iron and rated at 125 lb, this flange provides a reliable mating surface for joining flanged components to threaded pipe ends. It is a standard flat-face or raised-face fitting used by licensed plumbers and pipefitters when assembling or extending flanged pipeline sections. The 125 lb pressure class suits a wide range of low-to-medium pressure water, steam, and general-service piping applications.
This companion flange is suited for use in commercial plumbing, mechanical room piping, HVAC hydronic systems, and industrial process lines where a threaded pipe end must transition to a flanged connection. Domestically manufactured, it meets standard dimensional requirements for 125 lb cast iron flanges. Installers specify this type of fitting when connecting pumps, valves, strainers, or other flanged equipment to threaded pipe runs.
Designed as an OEM-style replacement or new-installation companion flange for 4-inch nominal threaded pipe systems rated at 125 lb service class, including pumps, valves, and flanged equipment with matching 125 lb bolt patterns.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable IPC and ASME B16.1 requirements. Depressurize and drain the piping system completely before disassembling or installing any flange fitting. Apply an appropriate pipe thread sealant to the male threads before making up the connection, and torque fasteners evenly in a cross pattern to ensure proper gasket seating. Inspect the mating flange face and gasket surface for damage before assembly.
Thanks for subscribing!
This email has been registered!