Nibco MD910A8 True Union Ball Valve 3/4 in Full Port

Product Description

The NIBCO MD910A8 is a true union design ball valve built for demanding fluid handling applications where chemical resistance and reliable shutoff are critical. Constructed from polyvinylidene fluoride (PVDF), this valve handles aggressive media at temperatures up to 280 degrees F and pressures up to 150 psi. The full port design delivers unrestricted flow through a 3/4-inch FNPT x FNPT connection. The one-piece body with true union ends allows in-line removal without disturbing adjacent piping, reducing service time. A wedge-style handle provides positive open/close indication. Schedule 80 rated throughout, this valve suits corrosive chemical systems in industrial, water treatment, and commercial plumbing environments. Installation is typically performed by licensed plumbers or pipefitters.

The MD910A8 is well suited for chemical feed lines, water treatment systems, and industrial process piping where standard brass or stainless valves are not compatible with the media. The FNPT x FNPT end connections thread directly into standard Schedule 80 PVC or CPVC fittings. The true union feature makes this valve particularly practical in systems that require periodic maintenance or valve replacement without full-system shutdown. PVDF construction provides resistance to chlorine, acids, and many solvents encountered in chemical processing and pool treatment applications.

Key Features

• PVDF body for broad chemical resistance including chlorine, acids, and solvents
• Full port ball design maintains unrestricted flow through the 3/4-inch line
• True union ends allow in-line valve removal without disturbing the pipe run
• FNPT x FNPT connections thread into standard Schedule 80 fittings
• Rated to 150 psi and 280 degrees F maximum working conditions
• Wedge handle provides clear open/close position indication

Compatibility

Designed as an OEM-style replacement or new-installation manual shutoff valve for 3/4-inch Schedule 80 thermoplastic piping systems using FNPT threaded connections in chemical, water treatment, and industrial process applications.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Depressurize and drain the system fully before removing or installing the valve. Use PTFE thread tape or a compatible thread sealant rated for PVDF and the media being handled — do not over-tighten threaded connections, as PVDF threads can crack under excessive torque. Verify flow direction and confirm the valve is in the closed position before returning the system to service.