![Amazon.com: Watts 0342691 30 PSI Pressure Relief Valve, Bronze, 3/4" 335 M2-030 : Industrial & Scientific Amazon.com: Watts 0342691 30 PSI Pressure Relief Valve, Bronze, 3/4" 335 M2-030 : Industrial & Scientific](https://m.media-amazon.com/images/I/71qI34spkKL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Watts 0342691 30 PSI Pressure Relief Valve, Bronze, 3/4" 335 M2-030 : Industrial & Scientific
![I put a new Backflow preventer on my boiler. My water pressure is at 50-70 psi or so. My boiler pressure was close to 30 psi but I drained it to 20 I put a new Backflow preventer on my boiler. My water pressure is at 50-70 psi or so. My boiler pressure was close to 30 psi but I drained it to 20](https://preview.redd.it/606jo65suvx51.jpg?width=640&crop=smart&auto=webp&s=a92d844fa16fbc9c6f81339d1e366b39672f03fc)
I put a new Backflow preventer on my boiler. My water pressure is at 50-70 psi or so. My boiler pressure was close to 30 psi but I drained it to 20
![Watts 0382570 1 In Iron Boiler Pressure Relief Valve, 30 psi, Expanded Outlets | Plumbing - Cooling - Heating Watts 0382570 1 In Iron Boiler Pressure Relief Valve, 30 psi, Expanded Outlets | Plumbing - Cooling - Heating](https://ebirdsall.com/media/catalog/product/cache/6837e145f7273de44554739173e4facf/0/3/0382570.jpg)