Watts 1.25 S115,THD 1-1/4" Pressure Reducing Valve, Ductile Iron, NPT

The Watts 1.25 S115,THD is a 1-1/4" globe-pattern pilot-operated pressure reducing control valve with NPT connections. It features a ductile iron body. Rated to 400 psi.

The 1 1/4 inch S115 threaded ACV pressure reducing control valve is designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure regardless of varying flow rates. The pressure reducing control pilot is normally open, held open by an adjustable spring setting to maintain a constant outlet pressure to the main valve. SentryPlus Alert® technology provides intelligent pressure monitoring and notifications using integrated sensors, and integrates with the Sensor Control Monitor to deliver maintenance alerts through BAS via RS-485 Modbus or the Nexa® platform over Wi-Fi.

Features

• Threaded connections
• 400 psig rated
• Maintains a constant pressure
• Integrates with the Sensor Control Monitor to deliver maintenance alerts to BAS via RS-485 Modbus or the Nexa platform by Wi-Fi connectivity
• 20-200 psig

Common Questions

What is the maximum working pressure?

This unit is built as THD (NPT Threaded) and is rated to 400 psi. Threaded and grooved bodies on this platform carry a higher working pressure than 150# flanged bodies, so do not assume a flanged datasheet applies here.

Specifications

• Type: Pressure Regulator
• Size: 1-1/4"
• Inlet Size: 1-1/4"
• Outlet Size: 1-1/4"
• Connection: NPT
• Body Material: Ductile Iron
• Max Pressure (psi): 400
• Operation: Pilot-Operated Diaphragm
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: 1.25 S115,THD
• Lead-Free: No
• Item Type: Valve
• Control Function: Pressure Reducing
• Valve Platform: SentryPlus Alert (S-Series)
• Body Pattern: Globe
• End Connection / Pressure Class: THD (NPT Threaded)
• Coating: Fusion-Bonded Epoxy
• SentryPlus Alert Ready: Yes