Part Number C-53920 having (CAGE Code 1CSX7) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for C-53920 Valve Safety Relief by Chemetron Fire Systems. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.