​The Rinnai PRV-1 Pressure Relief Valve is an essential safety component for water heating systems, designed to prevent excessive pressure buildup by releasing water when pressure exceeds 150 PSI. Constructed from durable brass, this 3/4-inch valve ensures longevity and reliable performance. Compatible with various Rinnai water heaters, it helps maintain system integrity and safety. R... https://www.hnkparts.com/prv-1-rennai-pressure-relief-valve