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Grohe Grohtherm 3/4" Thermostat Rough-In Valve-34397000

Model #: 34397000
At a Glance

Thermostatic valve with back-to-back installation by reversing the cartridge.


Get to know this product.


  • Compact cartridge with wax thermoelement
  • Built-in check valve with dirt strainer
  • Built-in service stops
  • Integrated stop valves
  • ¾“ NPT female thread
  • Back-to-back installation by reversing the cartridge
  • Temperature control only, outlets can only be used with separate stop valves
  • Max Flow Rate 16 gpm at 45 psi
  • Requires Twin Ell For Shower/Tub Combinations with Diverter spout (not included)
  • 34 331 – 9 gpm at 45 PSI (½" Valve)

Applicable Codes and Standards

  • Energy Policy Act of 1992
  • ASME A112.18.1/CSA B125.1
  • MASS

GROHE is a leading global brand for complete bathroom solutions and kitchen fittings and a global brand, dedicated to providing innovative water products.

For many decades, GROHE has been committed to the brand values of technology, quality, design and sustainability that all illustrate GROHE’s commitment to creating exceptional experiences and to delivering “Pure Freude an Wasser”. With its engineering, innovation and design activities firmly anchored in Germany, GROHE products bear the badge of quality “Made in Germany”, ultimately strengthening the customers’ confidence in the brand. All plants of the GROHE manufacturing network make use of high-precision production engineering to ensure compliance with consistently high GROHE standards. This way GROHE ensures that its products live up to the most uncompromising demands in terms of workmanship and functionality.


Additional Specifications


Misc. Specs

Width (in.)5.12
Height (in.)7.56
Valve FunctionThermostatic
Shower Valve TypeThermostatic Valves
Manufacturer WarrantyLimited Lifetime
Outlet Diameter (in.)0.75"
Inlet Diameter0.75"
Product Weight4.78
WarningProposition 65 Warning for California Residents