1/4" Hayward RPV Series PVC Diaphragm Pressure Relief Valve w/FPT x Threaded ends
Push Fit Tee Stop Valve - 1/2" Push x 1/2" Push x 1/4" Compression Water Shut Off Valve,1/4 Turn Chrome Water Line Splitter for Cooper, PEX,PVC Pipe, Tubing - Amazon.com
UPVC safety valve Back pressure valve PVC plastic pressure relief valve Safety relief valve 32mm DN25 1 inch - AliExpress
1" PVC Socket Type 582 Pressure Reducing Valve with EPDM Seal | U.S. Plastic Corp.
Large Size Pressure Reducing Valves • Plast-O-Matic Valves, Inc.