Bell & Gossett 112471

112471 Bell \& Gossett 4” Primary Secondary Header

112471 Bell \& Gossett 4” Primary Secondary Header. The B\&G low-loss header, Model PSH, is a combination air separator and manifold that creates independent primary and secondary circuits. The B\&G Model PSH is equipped with a purge valve allowing the user to remove any debris deposited on the bottom of the vessel and an air vent releasing trapped air in the system. The insulation, which is provided as a standard, prevents water vapors entering from the outside and eliminates the formation of condensate on the PSH body.