Part Number 525-S431-XM-B having (CAGE Code 1GZ83) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for 525-S431-XM-B Stop Check Valve by Sfc Valve Corp. 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.