At star up air will enter the steam trap and will be discharged out through the bleed hole.
Bucket type steam trap animation.
These are mechanical type of steam traps working on the principle of buoyancy.
800 813 series inverted bucket steam traps.
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When steam or air enters the bucket the bucket gains buoyancy and closes the valve.
A steam trap is a self contained valve which automatically drains the condensate from a steam containing enclosure while remaining tight to live steam or if necessary allowing steam to flow at a controlled or adjusted rate.
Discharge condensate immediately and completely.
Inverted bucket steam trap.
In inverted bucket steam traps the bucket within the trap is attached to a lever that opens and closes the trap valve in response to the bucket s motion.
Inverted bucket traps are the most robust type of the mechanical traps.
To review a specific inverted bucket steam trap select a series and go to the menu.
Most steam traps pass non condensable gases like air while remaining tight to live steam.
A steam trap should.
The inverted bucket steam trap is shown in figure 11 3 3.
Figure 11 3 3 shows the method of operation.
Condensate causes the bucket to lose buoyancy and sink opening the valve and allowing the removal of the condensate.
Liquid expansion steam traps the liquid expansion steam trap employs a liquid expansion device to discharge condensate at a predefined temperature.
Initially the bucket is resting at the bottom of the steam trap and the valve seat is wide open.
The weep hole is usually small enough to prevent significant steam loss but it removes only a limited amount of air which can hinder system start up or heat transfer on equipment.
200 series inverted bucket steam traps.
Up to 20 000 lb hr 9 072 kg hr.
In contrast inverted bucket type traps typically include an internal weep hole to bleed off steam or air continuously and with each cycle.
The bucket trap uses an inverted bucket as a float device and a linkage connects the bucket to the valve head.
When steam or air flows into the underside of the inverted bucket and condensate surrounds it on the outside the steam causes the bucket to become buoyant and rise.
