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The NIBCO MD909AC is a true union manual ball valve designed for 1-1/2 inch pipe in demanding fluid handling systems. Constructed from polyvinylidene fluoride (PVDF), this valve offers strong resistance to aggressive chemicals, making it well suited for corrosive fluid service. The full port design minimizes pressure drop across the valve, and the true union body allows the valve to be removed from the line without disturbing the surrounding piping. Solvent x solvent end connections make it compatible with Schedule 80 thermoplastic piping systems. A red wedge-style handle provides clear visual indication of valve position during operation.
This valve is intended for use in chemical processing, industrial fluid transfer, water treatment, and similar applications where PVDF construction is specified for chemical resistance. Schedule 80 compatibility and solvent-weld end connections make it a standard choice for thermoplastic piping installations in both commercial and industrial settings. Licensed plumbers and pipefitters typically handle installation in process piping systems where code and material compatibility require careful verification.
Designed as an OEM-style replacement or new installation valve for 1-1/2 inch Schedule 80 solvent-weld thermoplastic piping systems where PVDF material compatibility is required.
Installation should be performed by a licensed plumber or qualified pipefitter familiar with thermoplastic solvent-weld procedures. Isolate and depressurize the line completely before beginning any work. Follow solvent cement manufacturer instructions and applicable plumbing codes, such as the IPC, for cure times and primer requirements. Do not apply heat to the PVDF body, and ensure all fittings are fully seated before allowing the system to return to service.
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