Watson McDaniel WD600S Installation And Maintenance Manual Download Page 1

8

S T E A M   T R A P S

W D 6 0 0 L S

WD600LS

is a low capacity version of the standard

WD600S

model.

3/4” WD600LS

has the same capacity as the 

1/2” WD600S. 

Model

WD600S, WD600LS

Sizes

1/2”, 3/4”, 1”

Connections

NPT

Body Material

Stainless Steel 420F

Options

Blowdown Valve, Insulation Cap

PMO 

Max. Operating Pressure 

600 PSIG

TMO 

Max. Operating Temperature 

750ºF

PMA 

Max. Allowable Pressure 

915 PSIG up to 250ºF

TMA 

Max. Allowable Temperature 

610ºF @ 750 PSIG

T Y P I C A L   A P P L I C AT I O N S

DRIP, TRACER:

The 

WD600S 

thermodynamic steam trap 

is commonly used as a drip trap on steam mains and steam 
supply lines.  Supplied with integral strainer and optional 
blowdown valve to protect the trap from contamination. These
traps can be used on tracing applications; however, thermostatic
traps are normally recommended for this service. Ideal for 
outdoor applications that are subject to freezing and for 
superheated steam conditions.

H O W   I T   W O R K S

The thermodynamic trap has cyclic on-off operation with a disc
that is pushed open by incoming condensate and closes tightly
when steam tries to escape.  

F E AT U R E S

Integral strainer with optional blowdown valve to protect 
trap from contamination

High pressure applications up to 600 PSIG

Hardened stainless steel seat and disc for extended service 
life even at high pressure

Single trap will operate over the entire pressure range of
3.5-600 PSIG (Not recommended for use below 10 PSI)

Suitable for superheated steam

Freezeproof when trap is piped in a vertical orientation 
for complete drainage of condensate

Three-hole balanced discharge extends life of the seat area

Trap will function in any orientation (horizontal preferred)

Thermodynamic Steam Trap

WD600S

WD600S

Strainer

WD600SB

Strainer & Blowdown Valve

S A M P L E   S P E C I F I C AT I O N

The steam trap shall be all stainless steel thermodynamic 
type with hardened integral seat and disc with integral strainer 
and blowdown valve.

I N S TA L L AT I O N

Trap can be installed in any position; however, horizontal is 
preferred. Installation should include isolation valves. Do not
weld or damage can occur to the seat area. 

M A I N T E N A N C E

If trap fails, close isolation valves and remove cap. Clean disc
and seating surfaces and replace cap and disc with groove side
toward seat. NOTE: Do not over tighten cap. For full maintenance
details see Installation and Maintenance Manual.

O P T I O N S

An insulation cap is available to reduce cycle rates and steam
loss in rain, snow, or cold environments. Blowdown valve, used
for flushing dirt and scale from strainer.

SB 

= Strainer and Blowdown Valve

L

= Low Capacity

428 Jones Boulevard 

Limerick Airport Business Center 

Pottstown PA 

19464 

Tel: 610-495-5131 

Fax: 610-495-5134

www.watsonmcdaniel.com

Watson McDaniel reserves the

right to change the designs

and/or materials of its

products without notice.

©2010 Watson McDaniel Company

STEAM

TRAPS

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