HP500 Series Relief Valves 150 to 575 psig
    Relief Valves
        
    
    
            
                
    
            Features
        
- Very accurate cracking pressure
 - Zero leakage up to 95% of cracking pressure
 - 100% seat leakage tested
 - Tamper-proof adjustment
 - PED certifications and CE marking available for most models
 
1 2 
        
        
    
                            Item # | 
                        
                            Body Material | 
                        
                            O-Ring Material | 
                        
                            Valve Size | 
                        
                            End Connections (Inlet/Outlet) | 
                        
                            Cracking Pressure | 
                        
                            Operating Temperature | 
                        
                            Weight | 
                                                                Add To Cart/Request Quote | 
|---|---|---|---|---|---|---|---|---|
| HP532B-2M HP532B-2M/Asset/hp500-series-csc-relief-valve-hp559b-2m.jpg | Body Material N/A Brass | O-Ring Material N/A Viton® | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -20 to 400 ºF | Weight N/A .06 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP532B-2MP HP532B-2MP/Asset/hp500-series-csc-relief-valve-hp559b-2mp.jpg | Body Material N/A Brass | O-Ring Material N/A Viton® | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -20 to 400 ºF | Weight N/A .16 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP532B-4M HP532B-4M/Asset/hp500-series-csc-relief-valve-hp559b-4m.jpg | Body Material N/A Brass | O-Ring Material N/A Viton® | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -20 to 400 ºF | Weight N/A .27 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP532B-4MP HP532B-4MP/Asset/hp500-series-relief-valve.jpg | Body Material N/A Brass | O-Ring Material N/A Viton® | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -20 to 400 ºF | Weight N/A .6 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP559B-2M HP559B-2M/Asset/hp500-series-csc-relief-valve-hp559b-2m.jpg | Body Material N/A Brass | O-Ring Material N/A Buna N | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -65 to 275 ºF | Weight N/A .06 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP559B-2MP HP559B-2MP/Asset/hp500-series-csc-relief-valve-hp559b-2mp.jpg | Body Material N/A Brass | O-Ring Material N/A Buna N | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -65 to 275 ºF | Weight N/A .16 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP559B-4M HP559B-4M/Asset/hp500-series-csc-relief-valve-hp559b-4m.jpg | Body Material N/A Brass | O-Ring Material N/A Buna N | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -65 to 275 ºF | Weight N/A .27 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP559B-4MP HP559B-4MP/Asset/hp500-series-relief-valve.jpg | Body Material N/A Brass | O-Ring Material N/A Buna N | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -65 to 275 ºF | Weight N/A .6 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP533B-2M HP533B-2M/Asset/hp500-series-csc-relief-valve-hp559b-2m.jpg | Body Material N/A Brass | O-Ring Material N/A Neoprene | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -40 to 300 ºF | Weight N/A .06 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP533B-2MP HP533B-2MP/Asset/hp500-series-csc-relief-valve-hp559b-2mp.jpg | Body Material N/A Brass | O-Ring Material N/A Neoprene | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -40 to 300 ºF | Weight N/A .16 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP533B-4M HP533B-4M/Asset/hp500-series-csc-relief-valve-hp559b-4m.jpg | Body Material N/A Brass | O-Ring Material N/A Neoprene | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -40 to 300 ºF | Weight N/A .27 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP533B-4MP HP533B-4MP/Asset/hp500-series-relief-valve.jpg | Body Material N/A Brass | O-Ring Material N/A Neoprene | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -40 to 300 ºF | Weight N/A .6 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP562B-2M HP562B-2M/Asset/hp500-series-csc-relief-valve-hp559b-2m.jpg | Body Material N/A Brass | O-Ring Material N/A Ethylene Propylene | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -65 to 300 ºF | Weight N/A .06 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP562B-2MP HP562B-2MP/Asset/hp500-series-csc-relief-valve-hp559b-2mp.jpg | Body Material N/A Brass | O-Ring Material N/A Ethylene Propylene | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -65 to 300 ºF | Weight N/A .16 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP562B-4M HP562B-4M/Asset/hp500-series-csc-relief-valve-hp559b-4m.jpg | Body Material N/A Brass | O-Ring Material N/A Ethylene Propylene | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -65 to 300 ºF | Weight N/A .27 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP562B-4MP HP562B-4MP/Asset/hp500-series-relief-valve.jpg | Body Material N/A Brass | O-Ring Material N/A Ethylene Propylene | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -65 to 300 ºF | Weight N/A .6 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP532T1-2M HP532T1-2M/Asset/hp500-series-relief-valve.jpg | Body Material N/A 316 Stainless Steel | O-Ring Material N/A Viton® | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -20 to 400 ºF | Weight N/A .06 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP532T1-2MP HP532T1-2MP/Asset/hp500-series-relief-valve.jpg | Body Material N/A 316 Stainless Steel | O-Ring Material N/A Viton® | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -20 to 400 ºF | Weight N/A .16 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP532T1-4M HP532T1-4M/Asset/hp500-series-relief-valve.jpg | Body Material N/A 316 Stainless Steel | O-Ring Material N/A Viton® | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -20 to 400 ºF | Weight N/A .27 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP532T1-4MP HP532T1-4MP/Asset/hp500-series-relief-valve.jpg | Body Material N/A 316 Stainless Steel | O-Ring Material N/A Viton® | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -20 to 400 ºF | Weight N/A .6 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP559T1-2M HP559T1-2M/Asset/hp500-series-relief-valve.jpg | Body Material N/A 316 Stainless Steel | O-Ring Material N/A Buna N | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -65 to 275 ºF | Weight N/A .06 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP559T1-2MP HP559T1-2MP/Asset/hp500-series-relief-valve.jpg | Body Material N/A 316 Stainless Steel | O-Ring Material N/A Buna N | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -65 to 275 ºF | Weight N/A .16 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP559T1-4M HP559T1-4M/Asset/hp500-series-relief-valve.jpg | Body Material N/A 316 Stainless Steel | O-Ring Material N/A Buna N | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -65 to 275 ºF | Weight N/A .27 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP559T1-4MP HP559T1-4MP/Asset/hp500-series-relief-valve.jpg | Body Material N/A 316 Stainless Steel | O-Ring Material N/A Buna N | Valve Size N/A 1/2 in | End Connections (Inlet/Outlet) N/A Inline male pipe by female pipe | Cracking Pressure N/A 150 to 450 psig | Operating Temperature N/A -65 to 275 ºF | Weight N/A .6 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
| HP533T1-2M HP533T1-2M/Asset/hp500-series-relief-valve.jpg | Body Material N/A 316 Stainless Steel | O-Ring Material N/A Neoprene | Valve Size N/A 1/4 in | End Connections (Inlet/Outlet) N/A Popoff male pipe | Cracking Pressure N/A 150 to 575 psig | Operating Temperature N/A -40 to 300 ºF | Weight N/A .06 lbs | 
    
    
        Add To Cart
    
                                     Request Quote  | 
                    
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