Patent ID: 8235068

Claim:
A system for processing one or more substrates, comprising: a. a support for positioning the one or more substrates in a manner to be processed; b. a fluid dispensing device positioned in a manner to dispense a fluid onto the one or more substrates; c. a valve in fluid communication with the fluid dispensing device; d. a first fluid pathway between the valve and the fluid dispensing device; e. at least a second fluid pathway and a third fluid pathway, wherein each of the second and third pathways can discharge a fluid from the valve and divert the fluid flow from the first fluid pathway; f. a first fluid source comprising a first fluid and in fluid communication with the valve; g. a second fluid source comprising a second fluid and in fluid communication with the valve; and h. a controller operatively coupled to the valve, wherein the controller comprises program instructions comprising: i. causing the first fluid to flow through the first fluid pathway; ii. after instruction (i), diverting the first fluid flow from the first fluid pathway by causing the first fluid to flow through the second fluid pathway; iii. after instruction (ii), causing the second fluid to flow through the third fluid pathway; iv. after instruction (iii), causing the second fluid to flow through the first fluid pathway; v. after instruction (iv), diverting the second fluid flow from the first fluid pathway by causing the second fluid to flow through the third fluid pathway; vi. after instruction (v), causing the first fluid to flow through the second fluid pathway; and vii. after instruction (vi), causing the first fluid to flow through the first fluid pathway.