Watts Water Technologies 9BD-NPTM Inline Check Valve

Description:

The Watts 9BD-NPTM Check Valve is a 3/8 inch inline check valve designed to prevent reverse flow and protect water, air, and fluid systems from backflow conditions that can damage equipment or contaminate process lines. Commonly installed in plumbing systems, pump discharge lines, compressed air networks, water treatment equipment, process control systems, irrigation systems, and industrial fluid handling applications requiring dependable one-way flow control. Maintenance technicians, plumbing contractors, OEMs, and system integrators use this valve for system repairs, backflow prevention upgrades, replacement projects, and new installations requiring reliable reverse-flow protection.

Applications:

The Watts 9BD-NPTM Check Valve is widely used in commercial plumbing systems, municipal water distribution networks, booster pump stations, irrigation systems, water treatment skids, compressed air systems, manufacturing facilities, food and beverage processing plants, chemical processing equipment, HVAC systems, mechanical rooms, industrial process piping, OEM machinery, and utility distribution networks. The valve automatically prevents reverse flow that could damage pumps, regulators, meters, filtration equipment, and other critical components while helping maintain system integrity and operational efficiency. It is commonly specified in applications where dependable one-direction flow is essential for equipment protection, process reliability, contamination prevention, and compliance with system design requirements.

Technical Specifications:

• Brand: Watts
• Model: 9BD-NPTM
• Product Type: Check Valve / Backflow Preventer
• Connection Size: 3/8 in.
• Connection Type: Male NPT Threaded
• Valve Type: Inline Check Valve
• Function: Reverse Flow Prevention
• Flow Direction: One-Way Flow Control
• Service Media: Water, Air, Oil, and Compatible Fluids
• Body Material: Brass
• Spring Type: Internal Spring-Loaded Design
• Installation Orientation: Inline
• Application: Plumbing, Pneumatic, and Process Systems
• Operating Principle: Automatic Check Valve Action
• Service Environment: Commercial and Industrial Applications
• Suitable For: Pumps, Regulators, Compressors, and Fluid Handling Equipment
• Function: Equipment Protection and Backflow Prevention

Common Replacements:

• Watts 9D-M3 Check Valve
• Apollo 61 Series Inline Check Valve
• Parker Brass Spring Check Valve 3/8" NPT