Valve element for a condensate trap

摘要

There is provided a valve element for a condensate trap comprising an expansion chamber in the form of a metallic bellows having a variable axial length and having first and second ends sealed with first and second end caps respectively. A valve closure member is provided on the second end cap and is arranged to cooperate with a valve seat. A first guide member is coupled to the first end cap and axially extends into the bellows and a second guide member is coupled to the second end cap, axially extends into the bellows and cooperates with the first guide member. This allows relative axial movement between the first and second end caps but restricts relative radial movement between the first and second end caps. This helps to ensure that the valve closure member properly seats on the valve seal.

主权项

1. A valve element assembly for a condensate trap, the valve element assembly comprising:
a valve element installable in a valve body of the condensate trap, the valve element comprising:
a sealed expansion chamber containing a fixed amount of fluid and having a variable axial length and configured to axially expand or contract in response to a change of the volume of fluid within the sealed expansion chamber, the sealed expansion chamber comprising first and second ends sealed with first and second end caps respectively;a valve closure member on the second end cap for sealing with a valve seat of the condensate trap;a first guide member coupled to the first end cap and axially extending into the sealed expansion chamber; anda second guide member coupled to the second end cap, axially extending into the sealed expansion chamber and cooperating with the first guide member within the sealed expansion chamber to allow relative axial movement between the first and second end caps but to restrict relative radial movement between the first and second end caps; and a mounting member for mounting the valve element in a valve body of the condensate trap; wherein the valve element is pivotable with respect to the mounting member.