

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 NIBCO 39923636263 is a 1-1/2 inch Y-pattern swing check valve in the S-433-Y series, designed to prevent backflow in commercial, mechanical, and industrial piping systems. The valve features a bronze body with an integral seat and PTFE disc material, rated at 300 psi and Class 150 lb. The solder end connection suits copper pipe installations common in mechanical and industrial hydronic or process systems. It is installed by licensed plumbers and pipefitters working on commercial or industrial projects. This is a domestically manufactured valve and is not approved for potable drinking water service per California Section 116875 requirements.
This valve is suited for commercial, mechanical, and industrial applications where a horizontal swing check with a Y-pattern body configuration is required. The Y-pattern design reduces turbulence and pressure drop through the valve body compared to a straight-through configuration. The 1-1/2 inch nominal solder end connection makes it a direct fit for copper pipe systems in mechanical rooms, boiler loops, process piping, and similar non-potable fluid service installations.
Designed for use in commercial, mechanical, and industrial piping applications. Not for use in potable drinking water service per California Section 116875. Compatible with 1-1/2 inch copper pipe solder-end installations in non-potable fluid service systems.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and ASME standards. Shut off and depressurize the system completely before soldering or making any connections. Swing check valves in a Y-pattern configuration are typically installed in a horizontal orientation; verify orientation requirements before installation. Avoid overheating the valve body during soldering to protect internal seals and seat components.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!