Watts LFS777 User Manual
Lead free, Wye-pattern lead free* bronze strainers, For liquid and steam service
Pressure – Temperature
Maximum Working Pressure:
1
⁄
4
" – 3" (8-75mm)
400psi (27.6 bar) WOG @ 210ºF (99ºC)
125psi (8.6 bar) WSP @ 353ºF (178ºF)
4" (100mm)
300psi (20.7 bar) WOG @ 210ºF (99ºC)
125psi (8.6 bar) WSP @ 353ºF (178ºF)
LF777
For Liquid and Steam Service
ES-LF777
Series LF777,
LFS777
Wye-Pattern Lead Free* Bronze
Strainers
Sizes:
1
⁄
4
" – 4" (8-100mm)
Series LF777, LFS777 Wye-Pattern Lead Free* cast copper silicon
alloy Strainers are designed to protect system components from
dirt, rust and other damaging debris in the piping system. This series
features a solid retainer cap with gasket. The LF777 and LFS777 fea-
tures Lead Free* construction to comply with Lead Free* installation
requirements.
Features
• Lead Free* cast copper silicon alloy body
• Wye-pattern
• Solid retainer cap with gasket
Models
LF777 –
1
⁄
4
" – 4" (8 – 100mm) threaded connections
LFS777 –
1
⁄
2
" – 2" (15 – 50mm) solder connections
Specifications
A wye-pattern Lead Free* cast copper silicon alloy strainer to be
installed as indicated on the plans. The strainer must have a solid
retainer cap with gasket. Strainer shall be rated to 400psi (27.6
bar) WOG @ 210ºF (99ºC); 125psi (8.6 bar) WSP @ 353ºF (178ºF)
for sizes
1
⁄
4
" – 3" (8 – 75mm) and 300psi (20.7 bar) WOG @ 210ºF
(99ºC); 125psi (8.6 bar) @ 353ºF (178ºC) for size 4" (100mm). Lead
Free* Wye-Pattern cast copper silicon alloy Strainers shall be con-
structed using Lead Free* materials. Lead Free strainers shall comply
with state codes and standards, where applicable, requiring reduced
lead content. Strainer shall be a Watts Series LF777 (threaded ends)
or LFS777 (solder ends).
Materials
Body:
Lead Free* cast copper silicon alloy
Retainer Cap:
1
⁄
4
" – 4" (8-100mm): Lead Free copper silicon alloy
Cap Gasket:
1
⁄
2
" – 2" (15-50mm): EPDM
Other sizes consult factory
Standard Screen:
1
⁄
2
" – 2
1
⁄
2
" (8-65mm): 304 stainless steel
#20 mesh,
3" (75mm):
3
⁄
64
" (1.2mm) 304 stainless steel per-
forated screen
4" (100mm):
1
⁄
8
" (3mm) 304 stainless steel
perforated screen
LFS777
BAA/ARRA Compliant
**
**This product complies with the Buy American Act and The
American Recovery and Reinvestment Act. For more information,
visit watts.com.
LEAD FREE
*
Job Name –––––––––––––––––––––––––––––––––––––––––––
Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location –––––––––––––––––––––––––––––––––––––––––
Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer –––––––––––––––––––––––––––––––––––––––––––––
Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval –––––––––––––––––––––––––––––––––––––––––––––
Representative ––––––––––––––––––––––––––––––––––––––––
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.
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.