The wall-mounted bathtub thermostatic mixing valve is easy to install and suitable for most water heaters. Piercing Valve Piercing Tap Valve Refrigeration Valves BPV31 Bullet Easy to Use. Assembly Parts: Plastic Handle + "Vernet" Thermostatic Probe + Brass Body+ SUS304 Filter + SUS304 Spring + EPDM Oring + Plastic Check Valve + PPO Shutter.
eBay