A thermostatic steam trap is disclosed in which a control chamber contains an insert enclosing a bellows adapted to force a valve member to a closed position in a direction opposite the normal flow of fluid through the trap together with self-centering means to center and align the valve member with respect to the valve seat. Forged Steel ValvesMore specifically, in the present invention there is provided a thermostatic steam trap having an insert assembly which includes an annular member with a valve seat surrounding a valve member which seats in a direction opposite the normal fluid flow through the trap. The upper end of the valve member is attached to a cup-shaped cage containing a thermally responsive bellows. Balance ValvesMovement of the cage in the downward direction is impeded by a plurality of downward protuberances in contact with the above-mentioned annular member. An increase in the temperature of the fluid flowing through the trap actuates the bellows to expand upward pulling the cage and the attached valve member into a seated position, PLUG VALVESthus blocking the fluid flow into the outlet passage. The thermostatic steam trap self-centers its valve member by way of legs on the bellows assembly and a pair of contour plates which pivot upon one another. The result is a steam trap which is simple in operation and requires less service.

MORE NEWS