Detailed Product Instruction:     1: This valve (disk valve) is a kind of compression air "Switch" for blast cleaning system of  pulse pocket type            dust catcher;     2: Be controlled by the output signal from pulse blast controller;     3: It blast cleans the filter bag line (pocket by pocket);     4: Ensures the cleaning capacity and dust absorption efficiency of dust catcher.     Other Informations:      Payment: T/T, Western Union, 30% deposit and 70% balance before shipping;      Shipment: Usually we send the goods by DHL, FedEx, UPS, TNT, or EMS or as you require;                        After we shipped your goods, we will send you the tracking number by E-mail.                        If you do not receive it within 7 business days after shipping, please contact us.      Note: Please allow 4-7 working days for the arrival of your shipment. Thank you !            Specification: