Product Information
Safety valve USA
Compatible with 18 equipment models
- KBR16 Bosch Greenstar KBR16 Floor Boiler
- KBR21 Bosch Greenstar KBR21 Floor Boiler
- KBR28 Bosch Greenstar KBR28 Floor Boiler
- KBR35 Bosch Greenstar KBR35 Floor Boiler
- KBR42 Bosch Greenstar KBR42 Floor Boiler
- KWB28 Bosch Greenstar KWB28 Floor Boiler
- KWB35 Bosch Greenstar KWB35 Floor Boiler
- KWB42 Bosch Greenstar KWB42 Floor Boiler
- ZBR16 Bosch Greenstar ZBR16 Wall Boiler
- ZBR21 Bosch Greenstar ZBR21 Wall Boiler
- ZBR28 Bosch Greenstar ZBR28 Wall Boiler
- ZBR35 Bosch Greenstar ZBR35 Wall Boiler
- ZBR42 Bosch Greenstar ZBR42 Wall Boiler
- ZWB28 Bosch Greenstar ZWB28 Wall Boiler
- ZWB28-3A Bosch Greenstar Pro ZWB28-3A Wall Boiler
- ZWB35 Bosch Greenstar ZWB35 Wall Boiler
- ZWB42 Bosch Greenstar ZWB42 Wall Boiler
- ZWB42-3A Bosch Greenstar Pro ZWB42-3A Wall Boiler
Please note: Hydrowest Products Ltd. is a wholesale distributor and sells exclusively to licensed contractors and trade professionals.
Fast Shipping
In-stock orders ship within 1 business day to anywhere in Canada.
Code-Compliant
All products meet Canadian HVAC and gas code standards.
Wholesale Pricing
Trade pricing for licensed contractors. 40+ years in the industry.
Bosch Safety Valve (part number 87377034270) is a pressure-relief safety valve intended for use as an OEM replacement on Bosch hydronic and water‑heating equipment in the U.S. market. It protects boilers, water heaters and associated piping by relieving excess system pressure to prevent overpressure faults. Installers should verify the correct spare‑part match, pressure setting and installation instructions via Bosch Web‑ETK or the unit’s technical manual; the exact part number was not located in Bosch North America public listings. (bosch-homecomfort.com)
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