GFHF SERIES
CENTRIFUGAL ELECTRIC PUMPS
MOTOR-PUMP COUPLING
Three different types of motor/pump coupling are
available:
• GFHE: close-coupled by means of an adaptor bracket
with an impeller keyed directly to the motor shaft
extension.
• GFHS: with a bracket, adaptor and rigid coupling
keyed to the standard motor shaft extension.
• GFHF: with bracket, support, flexible coupling and
aligning and anchoring base.
• Bare shaft pump and version with spacer coupling
are also available upon request.
SPECIFICATIONS PUMP
• Delivery up to 480 m3 /h, 2 poles. 750 m3 /h, 4 poles.
• Head over 100 m, 2 poles. 80 m, 4 poles.
Temperature of pumped liquid:
• -20°C to +85°C for GFH 32, 40, 50, 65, 80 standard version.
• -30°C to +120°C for GFH 100, 125, 150 standard version (65-315 80-315 and 80-400 included). • Upon request, up to +140°C for GFH 100, 125, 150.
Maximum operating pressure:
• 12 bar (PN 12) up to GFH 80.
• PN 16 flanges for GFH 100, 125, 150.
Maximum pressure in pump casing:
12 bar for temperatures up to 120°C,
10 bar for temperatures ranging from 120°C to 140°C.
• Wear rings made of AISI 316L stainless steel on impeller front and rear wear plates up to GFH 80 (65-315, 80-315, and 80-400 excluded).
• Mechanical seal according to EN12756 (ex DIN 24960).
• Mechanical seal lubricated by internal recirculation of pumped liquid to seal housing for GFH 32, 40, 50, 65, 80 (65-315, 80-315 and 80-400 excluded).
• Mechanical seal locking pin slot for GFH32, 40, 50, 65, 80 (65-315, 80-315 and 80-400 excluded).