Watts Regulator Company 0887120 AK Repair Kit

Description:

The Watts Regulator RK 909 CK1 3/4"-1" Repair Kit (Part No. 0887120 AK) is a genuine first check valve repair kit designed for servicing 3/4 inch and 1 inch Watts 909 and LF909 Reduced Pressure Zone (RPZ) Backflow Preventer Assemblies. The kit includes the essential internal components needed to restore proper first check valve operation, helping maintain backflow protection and extend the service life of the assembly. It is intended for preventive maintenance and repair of commercial, industrial, and potable water backflow prevention systems.

Applications:

The RK 909 CK1 repair kit is widely used by plumbers, maintenance personnel, water utilities, and facility managers to service Watts 909 and LF909 RPZ backflow preventers installed in municipal water systems, commercial buildings, hospitals, schools, industrial facilities, irrigation systems, and fire protection applications. Replacing worn first check components helps restore valve performance, prevent backflow, and maintain compliance with plumbing and cross-connection control requirements.

Technical Specifications:

• Manufacturer Part Number (MPN): 0887120 AK
• Model: RK 909 CK1 3/4"-1"
• Brand: Watts
• Product Type: First Check Valve Repair Kit
• Compatible Models: Watts 909, LF909
• Compatible Valve Sizes: 3/4 in. and 1 in.
• Kit Type: First Check Repair Kit
• Kit Contents: Disc Assembly, Spring, Seat, Seat O-Ring, Cover O-Ring, Lubricant
• Function: Restores First Check Valve Performance
• Application: Reduced Pressure Zone (RPZ) Backflow Preventer Maintenance
• Service Media: Potable Water
• Lead-Free: Yes
• OEM Replacement Part: Yes
• Installation: Internal Repair of Existing Backflow Preventer
• Country of Origin: USA

Common Replacements:

• Watts RK 909 CK2 3/4"-1" Repair Kit 
• Watts LFRK 909-T 3/4"-1" Total Repair Kit
• Watts RK 909-VT 3/4"-1" Relief Valve Repair Kit