Part Number 634-503-9001 having (CAGE Code 9Y504) and FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings in stock with ready to ship. Get an instant quote for 634-503-9001 Restrictor Fluid Flow by Electro Scientific Industries In. 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.