Mueller Strainer - mdi

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Model: 251-DI

Ductile Iron Screwed End Y Strainer
Sizes: 1 ⁄4" – 3" (8 – 80mm)

Model 11M Y Strainers by Mueller

Pressure / Temperature - Non-Shock
Model Material Rating
251-DI Ductile Iron 640psi @ 100ºF
450psi @ 650ºF
251-DI: Class 300

Typical Service

  • Used extensively to strain foreign matter from pipelines and provide economical protection for costly pumps, meters, valves, and other similar mechanical equipment.

Features

  • Machined seats in both body and cap align and lock the screen in place to stop sediment bypass.

Construction

  • Gasketed cap is used for easy disassembly and assembly. Many others use Loctite, rendering disassembly virtually impossible
    NOTE: Bolted covers are supplied on sizes 2 1 ⁄2" and 3".

Self-Cleaning

  • Self-cleaning is accomplished by opening the plug or valve connected to the blowoff outlet.

Blowoff Outlets

  • Outlets are NPT tapped
  • Sizes of tapping are specified on next page
  • Not normally furnished with plug. Plug available, specify with order

Capacity

  • Generously proportioned bodies
  • Open Area Ratio much greater than pipe size, ensuring low pressure drop

Screens

Model Sizes Standard (Water) Steam Recommendation
Material Opening Material Opening
251-DI 1 ⁄4" - 3" 304SS 0.062 perf 304SS 0.045 perf

Material

  251-DI
Body Ductile Iron ASTM A536 Gr. 65-45-12
Cap Ductile Iron ASTM A536 Gr. 65-45-12

Dimensions and Weights

Size Dimensions Weight
    A B C
(NPT)
 
in. mm in. mm in. mm in. mm lbs. kgs.
1⁄4 6 3-13⁄16 97 2-3⁄16 56 3⁄8 10 2 0 .9
3⁄8 10 3-13⁄16 97 3-3⁄16 56 3⁄8 10 2 0.9
1/2 15 3-13⁄16 97 2-3⁄16 56 3⁄8 10 2 0.9
3⁄4 20 4-3⁄4 120 2-7⁄8 73 1⁄2 12 2.5 1.1
1 25 5-7⁄16 138 3-1⁄4 83 3⁄4 15 4 1.8
1-1⁄4 32 6-5⁄16 160 3-3⁄4 95 3⁄4 15 5 2.2
1-1⁄2 40 7-1⁄2 190 4-11⁄16 119 1 25 7.5 3.4
2 50 8-1⁄8 206 5-1⁄2 140 1-1⁄4 32 12 5.4
2-1⁄2 65 10-1⁄2 266 6-5⁄8 168 1-1⁄2 40 22 10
3 80 12-1⁄2 318 6-7⁄8 175 1-1⁄2 40 33 15

CF = Consult Factory

Dimensions for Model 251-DI Y Strainers by Mueller