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Common Questions Is the WHA-PKD3-400C compatible with the older P399 series
it maintains the exact mechanical parameters needed to prevent overheating and ensure optimal static pressure
or the system failing to respond to a "W" call from the thermostat
6" WC to monitor exhaust backpressure
ensuring perfect alignment with existing piping and mounting points
Bray Commercial 310800-11010390 Valve R-410A Common Questions Is the WHA-PKD3-400CThe Bray Commercial 310800 11010390 is a high performance 8 inch butterfly valve engineered for critical isolation and throttling in commercial HVACR and industrial fluid systems. As a member of the resilient seated Bray Series 31, this lug style butterfly valve provides bidirectional, bubble tight shutoff up to 175 PSI. This specific model serves as the direct 1 to 1 replacement for the discontinued 310800 11010119, ensuring seamless mechanical