Watts WFT - Manual

For Steam Main Drips and Process Applications
ES-WFT
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location –––––––––––––––––––––––––––––––––––––––––– Approval ––––––––––––––––––––––––––––––––––––––––––––––
Engineer –––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. –––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative –––––––––––––––––––––––––––––––––––––––––
Series WFT
Float & Thermostatic Steam Traps
Sizes: 3 ⁄
4
" – 2" (20 – 50mm)
For operating pressures up to 125psi (8.6 bar)
Series WFT Float & Thermostatic Steam Traps are designed to
provide continuous air venting and separate condensate drain-
ing with maximum efficiency and service. The “H” pattern body
on all
3 ⁄
4
", 1" (15, 30, 75, 125psi) and 1 1 ⁄
4
" (15, 30psi) has been
designed to offer maximum installation flexibility. Four possible
hookup combinations, combined with similar piping dimensions
to other major manufacturers, make this the “universal” replace-
ment trap. For larger sized traps, 1
1 ⁄
2
", 2" (15, 30, 75, 125psi)
and 1 1 ⁄
4
" (75, 125psi), the inlet and outlet taps are located in
the cover, allowing for the larger capacities needed. Series WFT
traps can also be serviced without disturbing system piping.
Features
• Universal 4-port design
• All stainless steel internal components protect
against erosion and corrosion
• Balanced pressure thermostatic element
• Extra-long life and dependable service
• Water hammer resistant
• Can be serviced without disturbing system piping
Applications
• Unit heaters and other space heating equipment
• Heat exchangers/reboilers
• Air heating coils
• Steam main drips
• Process equipment
Specifications
The float & thermostatic steam trap shall be installed as indicat-
ed on the plans. The steam trap shall have a maximum pres-
sure of 125psi and a maximum temperature of 353°F. The trap
body and cover shall be manufactured out of cast iron, the
internal parts and air vents shall be manufactured out of stain-
less steel. The product shall be a Watts Series WFT.
All 3 ⁄ 4 ", 1" WFT
1 1 ⁄ 4 " WFT-15, WTF-30
All 1 1 ⁄
2
", 2" WFT
1 1 ⁄ 4 " WFT-75, WTF-125
Materials of Construction
Body & Cover Cast Iron ASTM A126 CIass B
Valve Head Stainless Steel Type 440C
Valve Seat Stainless Steel Type 416
Valve Seat Gasket Stainless Steel Type 416
Float Stainless Steel Type 302
Bracket &Lever Assembly Stainless Steel
Thermostatic Air Vent Balanced Pressure S.S. bellows and valve
Air Vent Seat Stainless Steel Type 316
Cover Bolts Carbon Steel Grade 5
Cover Gasket Non - Asbestos
Draining Plug Stainless Steel
Pressure - Temperature
Maximum Allowable Pressure: 125psi (8.6 bar) @ 353°F (178°C)
Maximum Operating Pressure: controlled by pressure rating of
seat orifice.
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 with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
BAA/ARRA Compliant *
*This product complies with the Buy American Act and The
American Recovery and Reinvestment Act. For more information,
visit watts.com.