Tim Johnson sand valve is a self-enclosed, abrasive metering valve for its immediate and smooth for pneumatic or electric control. This can accurately cut abrasive flow valve and the nozzle at the same time to complete. Action flexible, responsive, wear resistance, abrasive remote control, so that the operator can readily control the flow of abrasive, while uninterrupted flow of air. This provides a quick and easy way to accurately control the flow into the tube in the abrasive sand. Safe and convenient operation, Thomson sand valve is ideal for multi-channel use and is easily adaptable to most existing blasting systems. It has the advantage, so that accurate measurement of all types of abrasive blast media can be precisely measured capacity, durable, easy to plug, can be installed on any storage tank blasting machine on your current peening operation can improve the working efficiency. Thomson valve spool ultra-resistant composite material, long life, easy to adjust flow, abrasive valve with italics, abrasive valve outlet connection,sand material inlet using a 2-inch internal thread, air inlet using a 2-inch external thread Sandblasting uses 1.2-inch pipe outlet with standard 32 male quick connector, bore all of the resistance loss, high efficiency. Body material: Aluminum