Detailed Product Instruction: 1: This solenoid pulse valve is a flood type valve (also called inset valve); 2: It is directly installed on the air bag with good staight blast and less loose of working air souce; 3: It is applied to the situation with wide range of air source pressure. 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 ! Products: