Skip to Main Content
Logo

9D Watts

Dual Check Valves with Intermediate Atmospheric Vent

Series 9D Dual Check Valves with Intermediate Atmospheric Vent prevent the reverse flow of hot or cold polluted water from entering into the potable water supply. They have a brass body with stainless steel internal parts, integral strainer, and two durable, tight-sealing, rubber check valves. Series 9D is designed for continuous pressure, non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines. Minimum Working Pressure: 25psi (172kPa), Maximum Working Pressure: 175psi (12.1 bar)

Features

  • Primary check valve has rubber disc seating against a mating rubber part to ensure tight closing
  • Stainless steel internal parts for longevity
  • Can be installed vertically or horizontally
  • Line-sized construction enables check modules to open further, helping to reduce check fouling

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific 9D

Approval Information

For the latest product certification information and documentation, please visit our certification partner websites: