Watts R119-03C Air Regulator Three Eighths Inch NPT 0 to 125 psi

Description:

The Watts FluidAir R119-03C Pneumatic Pressure Regulator is a 3/8 inch NPT air regulator designed to provide precise and stable downstream pressure control in compressed air systems. With an adjustable outlet pressure range of 0 to 125 PSI, it automatically reduces incoming air pressure to a controlled level, helping protect pneumatic equipment and ensure consistent system performance. It is commonly installed in manufacturing facilities, automation systems, pneumatic control panels, packaging machinery, instrumentation systems, and industrial compressed air networks.

Applications:

The Watts FluidAir R119-03C is widely used in compressed air distribution systems, assembly lines, pneumatic automation equipment, air-operated tools, process control panels, OEM machinery, material handling equipment, and manufacturing plants. Its diaphragm-operated, relieving design provides quick response and accurate pressure regulation, helping improve equipment reliability and extend the service life of downstream valves, cylinders, actuators, and other pneumatic components. It is well suited for applications requiring dependable pressure control with varying flow demands.

Technical Specifications:

• Manufacturer Part Number (MPN): R119-03C
• Reference Number: 162A86
• Brand: Watts FluidAir / Parker
• Product Type: Pneumatic Pressure Regulator
• Series: R119
• Connection Size: 3/8 in. NPT
• Connection Type: Female NPT Threaded
• Pressure Adjustment Range: 0–125 PSI (2–125 PSIG nominal)
• Maximum Inlet Pressure: 300 PSI
• Maximum Flow Capacity: 110 SCFM
• Regulator Type: Relieving
• Adjustment Style: Heavy-Duty T-Handle
• Gauge Ports: Two 1/4 in. NPT
• Body Material: Zinc
• Spring Cage Material: Aluminum
• Bottom Plug Material: Brass
• Diaphragm Material: Buna-N
• Service Media: Compressed Air
• Operating Temperature Range: 40°F to 120°F (4°C to 49°C)
• Installation: Inline Pneumatic System
• Function: Downstream Air Pressure Regulation and Control
• Application: Industrial Air Preparation Systems

Common Replacements:

• Watts FluidAir R119-03CG 
• Watts FluidAir R119-04C 
• Watts FluidAir R11-03C