Watts 4 FP-SK-77F-FDA-OSY Strainer, Cast Iron, Flanged

The Watts 4 FP-SK-77F-FDA-OSY is a 4" wye-pattern strainer with Flanged connections that removes pipeline debris and particulates to protect downstream equipment. It ships with a 1/16" perforated 304 stainless steel screen. It features a cast iron body. Rated to 200 psi.

This 4 inch cast iron flanged wye pattern strainer has 304 stainless steel perforated screens, a cast iron flanged retainer cap and a drain blow off connection furnished with a closure plug. The strainer also features a double coated, heat fused epoxy coating on the interior and exterior for FDA approved sanitary applications. It is supplied with an upstream OSY shutoff.

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?

4 FP-SK-77F-FDA-OSY ships with a 1/16" 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. 4 FP-SK-77F-FDA-OSY 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: 4"
• Connection: Flanged
• Body Material: Cast Iron
• Pressure Class: Class 125
• Max Pressure (WOG, psi): 200
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: 4 FP-SK-77F-FDA-OSY
• Lead-Free: No
• Strainer Pattern: Wye
• Screen Type: Perforated
• Screen Perforation: 1/16"
• Screen Material: 304 Stainless Steel
• Blowoff / Drain Tapping: Yes
• Blowoff Plug Included: Yes
• Max Steam Pressure (WSP, psi): 125
• Body Coating: FDA Epoxy