Flowserve BK 45 - Manual (Page 5)

5
Function
During start-up of the plant the steam trap is completely open. Cold condensate and air are dis-
charged. As the temperature rises, the bimetallic plates deflect, drawing the stage nozzle towards the
closed position.
Just before the condensate reaches saturated steam temperature the orifice will be shut off tight.
The thermodynamic effect of the stage nozzle chamber assists in the closing process.
The steam trap provides automatic air-venting at start-up and during operation of the plant and can
also be used for thermal air-venting.
Description
Thermostatic/thermodynamic steam trap with corrosion resistant Thermovit ® regulator (bimetallic
plates) able to withstand waterhammer. With internal strainer and integral non-return valve action.
Asbestos-free body gasket (graphite/CrNi).
The standard version discharges the condensate with virutally no banking-up, the version “U” with
approx. 0 K undercooling.
Scope of supply
BK 45:
 Steam trap BK 45
 Installation manual
BK 46:
 Steam trap BK 46
 Installation manual
BK 45U:
 Steam trap BK 45U
 Installation manual
Explanatory Notes