Questions and Answers for RFQ 493052.pdf

This is a Questions and Answers document for RFQ 493052 that specifies technical requirements for a pressure reduction valve assembly designed to handle deionized and deoxygenated water in a controlled process environment.

The valve must be constructed with an ASTM A351 CF8M body and connected via NPS 1/2 ASTM A312 TP304/304L seamless schedule 40S stainless steel tubing with ASME B16.5 Class 150 raised face flanges. The system operates with an inlet pressure of 40 psig and an outlet/setpoint pressure of 25 psig, accommodating flow rates ranging from a minimum of 0.25 gpm to a nominal 0.50 gpm, with a maximum normal operating flow of 1.25 gpm and an excursion flow capability of 3.50 gpm. The process fluid must comply with ASME B31.3 Category D specifications for deionized and deoxygenated water, with strict quality parameters including pH of 7.0 ± 1.0, resistivity of 2.0 ± 10% MΩ cm, and maximum dissolved oxygen content of 50 ppb.