Watts 9D-1/2-M3 Dual Check ValveThe Dual Check Valve Watts 9D 1 2 M3 delivers dependable backflow protection for lab equipment, processing tanks, sterilizers, and dairy equipment. Built with a brass body and a stainless steel disc and poppet, it provides durable, corrosion resistant performance in demanding sanitary environments. It supports both vertical and horizontal installations with female threaded union x female threaded union ends. Key specs include a 1 2 inch nominal size,

OEM-style replacement part for easy installation

featuring a 90 PSI pressure rating

Mounting: NEMA 48M

This unit uses a Bi-Metal sensing element for accurate temperature response and comes with a beige plastic cover and blank faceplate for clean wall appearance

Engineered for compatibility with the M7RL 1-Stage Condensing Downflow Gas Furnace

spare filter

Standards: UL

or heating applications

SWT01611 is a trusted Trane parts choice for homeowners and HVAC pros seeking quick

it maintains strong airflow while capturing dust

Includes auxiliary microswitch

The body combines polycarbonate base/cover with an aluminum plate for strength and light weight