For Steam Main Drip and Process Applications
ES-WTD
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Series WTD 600
Thermodynamic Steam Traps
Sizes 3⁄8
" – 1" (10 – 25mm)
For operating pressure up to 600psi (41 bars)
Series WTD 600 Thermodynamic Steam Traps are economical 
and compact, designed to efficiently drain steam mains, steam 
tracing lines, and small process equipment. The WTD 600 
Steam Trap discharges condensate at near to steam temperatures, so the steam space remains free of condensate. Their 
tight shut off feature ensures that valuable steam energy is not 
wasted. The WTD 600's hardened disc is the only moving part, 
assuring a long service life, easy low cost maintainability, and 
improved steam system efficiency.
Features
• Inexpensive: low initial purchase price and lower maintenance 
costs than traps requiring expensive repair kits
• Compact design: light weight and easy to install. Provides 
longer service life with simple maintainability. The only moving 
part is the hardened stainless steel disc
• Rugged all stainless steel: resistant to water hammer, 
freezing, superheat and corrosion for extra long service life
• Audible discharge cycle: checking trap operation is simple 
and does not require any special devices
• Blast discharge of condensate: eliminates dirt build up and 
provides a tight shut off, saving valuable steam energy
Applications
• Steam main drainage
• Superheat steam applications
• Steam tracing lines
•Freeze protection for outside applications
• Small process equipment
Specifications
The thermodynamic steam trap shall be installed as indicated 
on the plans. The steam trap shall have a maximum pressure of 
600psi (41 bars) and a maximum temperature of 800°F (427°C). 
The trap body shall be manufactured of ANSI 420 stainless 
steel, the cap and disc shall be manufactured out of ANSI 416 
stainless steel. The steam trap shall be a Watts Regulator 
Company Series WTD 600.
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, 
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
WTD 600