Watson McDaniel FDA400 Thermostatic Clean Steam Trap

The Watson McDaniel FDA400 Series thermostatic steam traps are used on clean steam applications as drip traps on piping runs as well as drainage for CIP/SIP systems and various process vessels. The FDA 400 Series allows for a 90 connection on either the inlet or outlet capable of 360 orientation.

HOW IT WORKS
The thermostatic trap contains a welded 316L stainless steel thermal element that expands when heated and contracts when cooled. When air and condensate are present the trap is in the open discharge position. When steam reaches the trap the element expands closing the trap tightly.

FEATURES
* Universal horizontal connection swivels to any angle
* All wetted parts are 316L stainless steel
* Electro-polish finish of 20-25 microinches RA on internal body
* Electro-polish finish of 25-32 microinches RA on external body
* Operates close to saturation curve to minimize condensate back-up
* Completely self-draining in the vertical downward flow orientation

MATERIALS
Body Stainless Steel, AISI 316L
Gasket Teflon Coated Elastomer
Element Plate Stainless Steel, AISI 316LM
Thermal Element Stainless Steel, AISI 316L
Clamp Stainless Steel, AISI 316L

INSTALLATION & MAINTENANCE
Trap is designed for installation in a vertical, downward flow orientation to ensure that the self-draining clean steam requirement is satisfied.