Brochure

CIRCULATORS Bell & Gossett Cast Iron Wet Rotor Circulators / NRF
14
Description
A residential or light commercial, maintenance free, axial flanged,
in-line, cast iron, wet rotor circulation pump for hydronic heating
systems. UL and cUL Listed.
Operating Data
Maximum Working Pressure: 150 PSI (10 bar)
Maximum Operating Temperature:
NRF-22 & NRF-9F/LW: 240°F (115°C)
NRF-25, NRF-33, NRF-36 & NRF-45: 225°F (107°C)
Materials of Construction
Pump Body: Cast Iron
Impeller: Noryl
Shaft: Ceramic
Bearings: Double-Sintered Carbon
Warranty
Bell & Gossett offers a warranty of 3 years from date of manufacture or
18 months from date of installation (which ever comes first) against
failure as a result of defects in materials and workmanship.
Specifications
Model
Number
Single
Speed
Three
Speed
Part
Number
Flange Sizes
Inches - NPT
Dimensions Inches (mm) Standard 60 Cycle Motor Characteristics*
Shipping
Weight
lbs. (Kg)
A B C Watts ø Volts F.L. Amps RPM
NRF-9F/LW
•
103267
3
/
4, 1, 1
1
/
4, 1
1
/
2
6
3
/
8 (162) 6
3
/
16 (157) 5
1
/
8 (130) 41
1 115
0.40 2800 9.3 (4.2)
NRF-22
•
103251 6
3
/
8 (162) 6
3
/
16 (157) 5
1
/
8 (130) 92 0.80 2940 9.3 (4.2)
NRF-25
•
103417 6
3
/
8 (162) 6
3
/
16 (157) 5
1
/
8 (130) 125 1.20 2950 10.4 (4.7)
NRF-33
•
103350 6
3
/
8 (162) 5
9
/
16 (141) 4
7
/
8 (124) 125 1.10 2950 10.4 (4.7)
NRF-36
•
103400 6
3
/
8 (162) 6
7
/
8 (175) 5
3
/
4 (146) 270 2.30 3300 13.1 (6.0)
NRF-45
•
103404 1, 1
1
/
4, 1
1
/
2 8
1
/
2 (216) 7
3
/
8 (187) 5
3
/
4 (146) 270 2.30 3300 14.5 (6.6)
NRF-9F/LW, NRF-22, NRF-25 and NRF-33 are impedance protected.
NRF-36 and NRF-45 are thermally protected.
Dimensions are approximate and subject to change. Contact factory for certified dimensions.
Single Speed NRF Circulator Performance Curves
NRF-33NRF-22NRF-9F/LW
Single Speed NRF Circulators