Type Key - Grundfos CR SF 32 Service Instructions Manual

3.2 Type key

Example CRN 10- 21 SF- P- GI- E- HQQE
Type range
3
Rated flow rate, m /h
Number of stages
Code for pump version
A = Basic version
B = Oversize motor
E = Certificate/approval
F = Pump for high temperatures (air-cooled top)
H = Horizontal version
HS = High-pressure pump with over-synchronous speed and reversed chamber stack
and direction of rotation
I = Differential pressure rating
K = Pump with low NPSH
M = Magnetic drive
P = Undersize motor
R = Horizontal version with bearing bracket
SF = High-pressure pump with reversed chamber stack and direction of rotation
T = Oversize motor (two flange sizes bigger)
X = Special version, or the pump consists of more than two versions
Code for pipe connections
A = Oval flange
B = NPT thread
CA = FlexiClamp (CRI, CRN)
CX = TriClamp (CRI, CRN)
F = DIN flange
FGJ = DIN, ANSI and JIS flange
GJ = ANSI and JIS flange
G = ANSI flange
J = JIS flange----
N = Different connection diameter
O = Externally threaded, union
P = PJE coupling
W = Internally threaded
X = Special version
Code for materials
A = Pump head: cast iron
Other parts in contact with the pumped liquid: stainless steel DIN W.-Nr. 1.4301
D = Carbon graphite-filled PTFE (bearings)
G = Stainless steel parts of DIN W.-Nr. 1.4401/AISI 316 or better class
I = Base plate and flanges of DIN W.-Nr. 1.4408/AISI 316LN or better class
I = Stainless steel parts of DIN W.-Nr. 1.4301/AISI 304 or similar class
II = All parts of stainless steel; parts in contact with the pumped liquid of DIN W.-Nr. 1.4301/AISI 304
K = Bronze (bearings)
S = Silicon carbide bearings and PTFE neck rings (standard in CR)
T = Titanium
X = Special version
Code for rubber parts
E = EPDM (ethylene propylene)
F = FXM (polytetrafluoroethylene and propylene)
K = FFKM (perfluoroelastomer)
P = NBR (nitrile)
T = PTFE (polytetrafluoroethylene)
V = FKM (fluorocarbon)
Code for shaft seal. See section 3.3 Code for shaft seal.
5