Takagi 100074624 Flow Adjustment Valve with Flow Sensor

Product Description

The TAKAGI 100074624 is a flow adjustment valve with an integrated flow sensor, designed as a replacement component for TAKAGI tankless water heater systems. This valve regulates water flow through the heat exchanger circuit and provides flow-rate feedback to the unit's control system, enabling proper firing and temperature control. It is a direct OEM-style replacement part intended for installation by licensed plumbers or qualified tankless water heater service technicians working on TAKAGI residential and light-commercial units.

This part is a replacement valve assembly for a wide range of TAKAGI tankless water heater models running on both natural gas and liquid propane. It is used in both indoor and outdoor installations across multiple TAKAGI product lines. When the original valve shows signs of restricted flow, inaccurate sensor readings, or flow-related error codes, this assembly restores factory operation without modification to the existing plumbing or control wiring.

Key Features

• Integrated flow sensor eliminates the need for a separate sensor component
• Direct OEM replacement designed for TAKAGI tankless water heater systems
• Compatible with both natural gas and liquid propane model variants
• Supports flow regulation and control board feedback in a single assembly
• Applicable across indoor direct-vent, outdoor, and utility installation configurations

Compatibility

Compatible with the following TAKAGI models: TK-310C-NI (NG), T-D2U-OS (NG), T-H3J-OS (NG), TK-540P-PEH (LP), T-H3-DV (NG), T-KJR2U-OS (NG), T-H3S-DV (LP), T-D2U-IN (NG), T-H3S-DV (NG), T-K4U-IN (NG), TK-540P-NIH (NG), T-H3S-OS (LP), TK-110C-NI (NG), TK-540P-NEH (NG), T-K4U-OS (NG), T-H3-DV (LP), TK-510C-NI (NG), T-H3-OS (LP), T-H3J-DV (LP), T-H3-OS (NG), T-H3J-OS (LP), T-H3J-DV (NG), T-H3S-OS (NG), TK-540P-PIH (LP), T-KJR2U-IN (NG).

Installation Notes

Installation should be performed by a licensed plumber or a technician certified to service tankless water heating equipment. Shut off the cold water supply and disconnect power to the unit before beginning any disassembly. Relieve system pressure completely before removing the existing valve assembly. Follow all applicable local plumbing codes and the manufacturer service documentation for reassembly and leak testing procedures.

Technical Specifications

• Product Type: Valve
• Application: Replacement Part

Standard Information

• Brand: TAKAGI
• Manufacturer Part Number: 100074624