INVERTED BUCKET STEAM TRAPS

Inverted Bucket Steam Traps belong to the family of mechanical traps. They operate on the difference in density between steam and water.

MIYAWAKI offers a very wide range of inverted bucket steam traps for small up to large condensate loads.

Inverted bucket steam traps discharge the condensate intermittently.

Types:


ES
Cast Iron Inverted Bucket Steam Traps for small up to medium condensate loads

ESU
Stainless Steel Inverted Bucket Steam Traps for small up to medium condensate loads

ER
Cast Iron Inverted Bucket Steam Traps for medium up to high condensate loads

ESH, ER25
Cast Steel Inverted Bucket Steam Traps for high pressure and small up to high condensate loads

Features

  • All traps are equipped with stainless steel wear and corrosion resistant lever, valve and seat system for long and troubleless life
  • All valves and seats are lapped together
  • Traps of the series ER contain the patented SCCV® (Self Closing and Centering Valve) - System, which increases the lifetime of the valve and seat substantially
  • A small hole in the top of the bucket secures continuous automatic air venting
  • All traps are designed for quick and easy inline repairability
  • Witstands high back pressure (up to 90%)

Application:

Heat exchangers, dryers, unit heaters, sterilizers and other applications, where condensate must be removed immediately.

Super-Discharger:

super-discharger-e

  • Incorporates the MIYAWAKI SCCV® -System
  • Double valve system with needle pilot valve and main valve
  • Operates by the pressure difference inside the valve unit
  • Makes the discharge capacity very large
  • Designed for high pressure up to 6,4 MPa (925 psig) - only for ER25

Operating principle:

cold-condensate cold condensate hot-condensate hot condensate steam steam/hot air

e1e1
e3e4
e5e6

1 & 2
3 & 4
5 & 6

On start-up the bucket is down and the valve is open. Low temperature condensate and air, later high temperature condensate enter the trap. The condensate fills the bucket and the trap body completely. As the bucket is completely submerged in the water, it lies on the bottom of the trap, the valve is wide open and condensate will discharge.
Steam enters the trap under the bottom of the bucket. The more steam is entering the trap, the more it collects at the top of the bucket, causing the bucket to move upwards (buoyancy of the bucket inside the water). At the top position of the bucket the valve will close the seat.
Air and gases pass through a small hole in the top of the bucket and collect at the top of the trap. Steam is also passing through the hole and condensing. When more condensate is entering the trap, the bucket will loose its buoyancy and will move down. The valve will open and condensate will discharge.