Watts 820975 Flanged Cast Iron Ball Valve 4 Inch

Product Description

The WATTS 820975 is a 4-inch flanged cast iron full port ball valve designed for industrial and commercial piping systems where reliable shutoff and minimal flow restriction are required. The valve features a stainless steel ball and stem for corrosion resistance and long service life. Rated at 200 CWP (cold working pressure), it is built to handle demanding fluid control applications. A lever handle is included for manual quarter-turn operation. Licensed plumbers and pipefitters are the typical installers for this class of flanged valve.

This valve is suited for commercial and industrial plumbing, HVAC hydronic systems, and process piping applications where a 4-inch flanged connection is specified. The full port design delivers unrestricted flow with minimal pressure drop, making it appropriate for systems where flow efficiency is a priority. The cast iron body provides durability in above-ground and inline installations across a wide range of compatible fluid services.

Key Features

• Full port ball design minimizes pressure drop and flow restriction
• Stainless steel ball and stem resist corrosion in demanding service environments
• Cast iron body provides structural durability for commercial and industrial use
• Flanged end connections for secure, leak-resistant inline installation
• Rated at 200 CWP for reliable performance under cold working pressure conditions
• Lever handle included for quick quarter-turn manual operation

Compatibility

Designed as an OEM-style replacement or new-installation ball valve for 4-inch flanged piping systems in commercial plumbing and hydronic applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and the ASME B16 flange standards. Shut off and depressurize the system completely before removing or installing the valve. Inspect flange gaskets and bolting hardware for proper seating and torque per the flange specification — do not rely on valve-body specs alone for joint integrity. Verify flow direction and handle orientation before returning the system to service.

Technical Specifications

• Size: 4 inches
• Port Type: Full Port
• Cold Working Pressure (CWP): 200 psi
• Body Material: Cast Iron
• Ball and Stem Material: Stainless Steel
• End Connection: Flanged
• Weight: 88.70 pounds

Standard Information

• Brand: WATTS
• Manufacturer Part Number: 820975