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521 DP <br />Male Shown <br />Patented 5,244,006 <br />521 DP <br />y Top and Shear Section <br />I <br />10 <br />DOUBLE -POPPET SAFETY VALVE - Features 3 distinct units - the standard <br />lower main housing unit where the first poppet fits, the middle section containing <br />the shear section and the top housing, which includes the second poppet. <br />Pressure relief is built into the upper poppet to prevent pressure build up due to <br />thermal expansion. If the Valve is hit, the upper poppet and lower valve body <br />poppet both close and produce a 100% liquid tight seal - no product can escape <br />from the dispenser's lower chamber onto the ground. <br />Model # <br />Size <br />Top Thread <br />Weight (lbs.) <br />Height <br />Width <br />521DP-RF-15 1 <br />1'12" <br />Female <br />I I <br />7.0 <br />8'la° <br />4112" <br />521 DP -RM -15 <br />1'/2" <br />Male <br />7.0 <br />8'la" <br />4'/2" <br />NOTE: Double -poppet safety valves are also available for secondary containment. <br />Model # <br />Size <br />Top Thread <br />Weight (lbs.) <br />Height <br />Width <br />522DP-RF-15 <br />1'/2" <br />Female <br />7.0 <br />8'I<" <br />41/2" <br />522DP-RM-15 <br />1'12" <br />Male <br />7.0 <br />8'/4" <br />4'/2" <br />523DP-RF-15 <br />1'/2" <br />Female <br />7.0 <br />8'/4" <br />4'h" <br />523DP-RM-15 <br />1112" <br />Male <br />7.0 <br />81l4" <br />4112" <br />- Zinc -plating assures maximum corrosion resistance <br />- Stainless steel shaft and spring construction provide added reliability <br />- Ears and raised bosses allow secure valve anchoring <br />- Can be anchored by using the 521 KR U -Clamp Anchor <br />- UL listed 195P <br />REPLACEMENT TOPS - Should an original double -poppet safety valve top <br />become damaged, Universal offers replacement tops. <br />Model # Top Thread Weight (lbs.) <br />521DP-RF-15-C Female 2.0 <br />521DP-RM-15-B Male 1.8 <br />REPLACEMENT SHEAR SECTION - Should an original double -poppet safety <br />valve be sheared, Universal offers replacement shear sections. <br />Model # Weight (lbs.) <br />521 DP -SS -15 1.5 <br />NOTE: Double -poppet safety valve replacement tops and replacement shear <br />sections are ordered separately. <br />