Watts 77F-DI-250 - Manual

Series 77F-DI-250
Flanged, Wye Pattern, Ductile Iron
Strainers
Sizes: 2" – 12" (50 – 300mm)
Series 77F-DI-250 Flanged, Wye Pattern, Ductile Iron Strainers
feature a one-piece cast body, bolted cover flange with flat gasket
seal, 304 stainless steel perforated screens and a drain/blow-off
connection plug.
Features
• Flanges conform to American Cast Iron Flange Standard, Class
250 (ANSI B16.1)
• Body meets ASME standards
• One-piece lead free* cast body
• Equipped with bolted cover flange that utilizes a flat gasket seal
• Upper and lower machined seats
• 304 Stainless steel perforated screens
• Drain/Blow-off connection furnished with plug
• Generous screen area and properly proportioned straining
chamber to minimize initial pressure drop while maximizing time
between cleanings
Specifications
A flanged, wye pattern, ductile iron strainer to be installed as indi-
cated on the plans. The strainer must have a one-piece cast body,
bolted cover flange, machined seats, 304 stainless steel perforated
screens and a drain/blow-off plug. Pressure rating no less than
500psi (34.47 bars) WOG non-shock and 250psi (17.2 bars) WSP.
Strainer body and flanges shall conform to American Cast Iron
Flange Standard, Class 250 (ANSI B16.1). Strainer shall be a Watts
Series 77F-DI-250.
For Commercial and Institutional Applications
ES-77F-DI-250
77F-DI-250
Pressure – Temperature
Temperature Range: -20°F (-28.9°C) - 406°F (208°C)
Maximum Operating Pressure:
500psi (34.47 bars) WOG, non-shock, @ 150°F (66°C)
250psi (17.2 bars) WSP @ 406°F (208°C)
Standard Screens
2" – 3" (50 – 75mm): 3 /
64
" perforation
4" – 12" (100 – 300mm): 1 /
8
" perforation
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.
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Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
LEAD FREE
*
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.