Can a Watts 9D be installed vertically?
May be installed horizontally or vertically. Quick closing valves, water hammer or supply pressure fluctuations can cause intermittent discharge. The installation of a Water Hammer Arrestors (Watts Series 05) or Water Pressure Regulator (Watts Series 1156 or 25AUB) may be required to correct the problem.
What is an 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.
What is an RP backflow preventer?
The RP-500 Backflow Preventer is designed to supply maximum protection against back flow caused by negative pressure or backpressure. Backflow may cause infiltration of chemicals, fertilizers and/or other pollutants into potable water systems.
What is a 9d check valve?
Series 9D is suitable for use on hot or cold water and can be used under continuous pressure. It features a primary check valve utilizing a rubber disc seating against a mating rubber part to ensure tight closing.
What is the working pressure of series 9d?
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)
What is series 9d used for?
Series 9D is specially made for smaller supply lines and ideally suited for laboratory equipment, processing tanks, sterilizers, dairy equipment and similar applications. It is particularly recommended for boiler feed lines to prevent backflow when supply pressure falls below system pressure.