Watson McDaniel WD600S Manual

8
STEAM TRAPS
WD600LS
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
TYPICAL APPLICATIONS
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.
HOW IT WORKS
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.
FEATURES
•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
SAMPLE SPECIFICATION
The steam trap shall be all stainless steel thermodynamic
type with hardened integral seat and disc with integral strainer
and blowdown valve.
INSTALLATION
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.
MAINTENANCE
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.
OPTIONS
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: [phone] •Fax: [phone]
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

9
Note: Maximum back pressure not to exceed 80% of inlet pressure (measured in absolute pressure) or trap may not close.
Note: For optimum performance, recommended for operating pressure above10 PSIG.
Thermodynamic Steam Trap
WD600S
MATERIALS
Body Stainless Steel, AISI 420F
Disc Stainless Steel, AISI 420
Cover Stainless Steel, AISI 416
Insulation Cap Stainless Steel, AISI 304
Strainer Screen Stainless Steel, AISI 304
Blowdown Valve Stainless Steel, AISI 303
STEAM TRAPS
Insulation Cap
Cover
Disc
Body
Strainer
Optional
Blowdown
Valve
Bottom Cap
B
C
A
DIMENSIONS & WEIGHTS – inches/pounds
Size/Model Connection ABC Weight (lbs)
Series WD600S (Strainer)
1/2" WD600S NPT 3.156 1.5 2.531 2
1/2" WD600LS NPT 3.156 1.4375 2.531 1.5
3/4" WD600S NPT 3.5625 1.625 2.531 2.5
3/4" WD600LS NPT 3.5625 1.5625 2.531 2.4
1" WD600LS NPT 3.75 1.4375 2.531 2.5
Series WD600SB (Strainer & Blowdown Valve)
1/2" WD600SB NPT 3.156 1.5 3.5 2.3
1/2" WD600LSB NPT 3.156 1.4375 3.5 2.0
3/4" WD600SB NPT 3.5625 1.625 3.5 2.8
3/4" WD600LSB NPT 3.5625 1.5625 3.5 2.7
1" WD600LSB NPT 3.725 1.4375 3.5 2.7
CAPACITIES – Condensate (lbs/hr)
Size/ Steam Inlet Pressure (PSIG)
Model 3.5 5 10 15 20 25 30 40 50 75 100 150 200 250 300 350 400 450 500 550 600
1/2” WD600LS 180 185 190 195 200 215 220 230 250 310 375 500 620 710 800 825 900 1070 1120 1185 1290
1” WD600LS 180 185 190 195 200 215 220 230 250 310 375 500 620 710 800 825 900 1070 1120 1185 1290
1/2” WD600S 300 315 350 380 415 440 470 515 580 710 825 1020 1165 1300 1440 1565 1670 1775 1880 1960 2060
3/4” WD600LS
3/4” WD600S 415 430 475 520 565 610 650 720 825 1020 1185 1480 1710 1950 2110 2265 2490 2625 2780 2985 3140
HOW TO SIZE/ORDER
Select working pressure; follow column down to correct capacity
(lbs/hr) block. Example:
Application: 650 lbs/hr at 30 PSIG working inlet pressure
Size/Model: 3/4” WD600S
FLOW
428 Jones Boulevard •Limerick Airport Business Center •Pottstown PA •19464 •Tel: [phone] •Fax: [phone]
www.watsonmcdaniel.com
STEAM TRAPS