Part Number 81561-01- 1-2IN having (CAGE Code 76364) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for 81561-01- 1-2IN Valve Stop Check by Milwaukee Valve Company Inc. 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.