GRUNDFOS Model UPS Stainless in line pump and union valves 
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GRUNDFOS Model UPS Stainless in line pump and union valves

Circulator Pump

3 speed inline stainless pump suitable for ring mains, hydronic and slab heating water

The 20 mm or 3/4" pump suits most average homes if its a bigger job you may require a 25mm or 1" pump.  

You also need to purchase the union valve set with this pump OR a set of two ball valves

PDF: download
Price (each):
UPS20-60N.  $644.00 
00-51-98-02, 20mm (3/4') Union Valve Set.  $67.90 
UPS25-60N.  $830.20 
R252-40x25,25mm (1') Union Valve Set.  $77.00 
UPS25-80N.  $922.46 
R252-40x25,25mm (1') Union Valve Set(FOR 1' PUMPS).  $77.00 
UPS32-80N.  $917.00 
R252-50x32,32mm (11/4') Union Valve Set.  $123.20 
HHS 00-5-98-02 set of two ball valves for 20mm Grundfos pump.  $82.81 
HHS R252 Y001-25 set of two ball valves for 25mm Grundfos pump.  $63.39 
HHS R252 Y002-32 set of two ball valves for 32mm Grundfos pump.  $77.39 

Quantity   for 
UPS Stainless GRUNDFOS Pumps