Flowserve BK 15 Bedienungsanleitung PDF herunterladen (Seite 7)

Pressure/Temperature Ratings PN 40

Body material Forged steel 1.0460 (P250GH / C22.8) / ASTM A105

Nominal sizes (DN) 40, 50

Connections Flanged to DIN PN 40

Service pressure PMA [barg] 40 35 28 21 14.5

[psig] 580 508 406 305 210

Related temperature TMA [°C] 20 200 300 400 450

[°F] 68 392 572 752 842

Technical Data

Explanatory Notes

Scope of Supply

BK 15

1 Steam trap type BK 15

1 Installation manual

Description

Thermostatic/thermodynamic steam trap with corrosion-resistant regulator unaffected

by waterhammer. The Duo stainless steel regulator is externally adjustable. With

integral strainer and non-return valve action. Asbestos-free cover gasket (graphite).

Installation in any position.

The steam trap is adjusted at our factory to discharge condensate with virtually no

banking-up. More undercooling (banking-up of condensate) can be manually adjusted

during operation from the outside.

Function

During start-up of the plant the Duo stainless steel plates are flat. The service

pressure acts in the opening direction, the valve is completely open. As the

condensate temperature rises, the plates deflect, drawing the stage nozzle towards

the closed position. As the condensate temperature sinks, the deflection of the Duo

stainless steel plates decreases and the steam trap opens at the adjusted opening

temperature.

The thermostatic and spring characteristics of the stack of plates are balanced such

that condensate is always discharged at a given undercooling temperature.

The trap provides automatic air-venting at start-up and during operation. The correct

functioning of the BK 15 is neither affected by upstream pressure variations nor by

back pressure. The BK 15 can also be used for thermal air-venting in steam systems.

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Flowserve BK 15 Bedienungsanleitung Seite 7