• 3/4 in. (20mm) Service Valves

Series TWH Tankless Water Heater valves are designed to simplify the installation, maintenance and operation of tankless water heaters.

They replace up to 18 fittings and 16 connections used in typical tankless water heater installations. Available in two valve sets or as a single valve with quick-connect ends.


  • 3/4" FPT unions for connection to water heater (all models)
  • 3/4" Quick-Connect end connections to water lines (QT models)
  • Full-port, quarter-turn ball valve with color-coded tee handle and union
  • Quarter-turn purge and drain valve with hose connection and tethered brass cap
  • Hot and cold valves certified to NSF/ANSI 61
  • Staggered connection points for ease of installation and access
  • Valves are suitable for most tankless installations
  • No additional adapters required
  • 600 WOG rated

3/4 in. (20mm) Service Valves

  • Product Code: ACC-02
  • Availability: In Stock
  • $340.00