Watts 77F-DI-125 12 Lead-Free Strainer, Cast Iron, Flanged

The Watts 77F-DI-125 12 is a 12" lead-free wye-pattern strainer with Flanged connections that removes pipeline debris and particulates to protect downstream equipment. It ships with a 3/16" perforated 304 stainless steel screen. It features a cast iron body. Rated to 200 psi. This model is certified lead-free for potable-water installations.

This cast iron flanged wye pattern strainer 12 inch Watts model 77F-DI-125, has lead free class B cast iron body with 3/16 inch perforated screen, class 125 flanged connections, cast iron blowdown plug, stainless steel perforated screen, bolted and tapped iron retainer cap with graphite gasket and drain/blowoff connection furnished with a closure plug. Applicable for liquid and steam service to protect check valves, backflow preventers and similar controls from foreign matter. Maximum Pressure (non-shock) 200 psi (13.8 bar) at 210 degree F (99 degree C) WOG, 125 psi (8.6 bar) at 353 degree F (178 degree C) WSP.

Features

• Wye pattern
• Cast iron body
• 304 stainless steel perforated screens
• Flanged
• Includes: Strainer

Common Questions

What mesh or screen size does it come with?

77F-DI-125 12 ships with a 3/16" perforated 304 Stainless Steel screen. That is the standard screen Watts supplies for this body at this pipe size -- the screen size is not called out in the model number, so it varies by size across the series.

Can I use this on steam?

Yes. 77F-DI-125 12 is rated 125 psi WSP on steam, which is a separate and much lower limit than its 200 psi WOG (cold water, oil, gas) rating. Do not size steam service off the WOG number.

Does it have a blowoff / blowdown port?

Yes. The retainer cap/cover is tapped for a blowoff connection, so you can flush accumulated debris by pulling the plug or piping a blowdown valve to it -- no need to break the strainer apart. The closure plug is included.

Specifications

• Type: Strainer
• Size: 12"
• Connection: Flanged
• Body Material: Cast Iron
• Pressure Class: Class 125
• Max Pressure (WOG, psi): 200
• Application: Steam
• Country of Origin: China
• Warranty: 1 Year Limited
• MPN: 77F-DI-125 12
• Certifications: NSF-372
• Lead-Free: Yes
• Strainer Pattern: Wye
• Screen Type: Perforated
• Screen Perforation: 3/16"
• Screen Material: 304 Stainless Steel
• Blowoff / Drain Tapping: Yes
• Blowoff Plug Included: Yes
• Max Steam Pressure (WSP, psi): 125
• Body Coating: None