Materials of Construction Cast Iron Steel 316 Stainless Steel
Design Features The heavy-duty series internal gear pumps feature thrust control, allowing them to operate to higher pressures than General Purpose Pumps.  They also offer more material options, port options, and jacketed versions for critical temperature control. The Heavy Duty Series includes the following models: 125 - Cast Iron Packed Pumps 225 & 335 - Cast Iron Packed Jacketed Pumps  4125 - Cast Iron Mechanically Sealed Pumps 4225 & 4335 - Cast Iron Mechanically Sealed Jacketed Pumps  123 - Steel Packed Pumps 223 & 333 - Steel Packed Jacketed Pumps  4123 - Steel Mechanically Sealed Pumps 4223 & 4333 - Steel Mechanically Sealed Jacketed Pumps  127 - 316 Stainless Steel Packed Pumps 227 & 337 - 316 Stainless Steel Packed Jacketed Pumps 4127 - 316 Stainless Steel Mechanically Sealed Pumps 4227 & 4337 - 316 Stainless Steel Mechanically Sealed Jacketed Pumps  724 - 316 Stainless Steel Packed Pumps 4724 - 316 Stainless Steel Mechanically Sealed Pumps
Performance Capacity 0 - 340 m³/hr 0 - 1500 GPM Pressure 0 - 14 BAR 0 - 200 PSI Viscosity 0.1 - 1,000,000 cSt 28 - 4,000,000 SSU Temperature -85 - 430 C -120 - 800 F

Note:  Models shown in yellow below are also available in a Universal Seal version with additional features and options to the standard Heavy-Duty design.
  

Cast Iron and Steel Models
Size	Standard Port	Nominal Capacity at Maximum Speed		Maximum Speed	Maximum Pressure*
	Inches	m³/hr	GPM	RPM	BAR	PSI
G	1	2	8	1800	14	200
H	1.5	3	15	1800	14	200
HL	1.5	7	30	1800	14	200
AK	2	11	50	1200	14	200
AL	2	17	75	1200	14	200
K	2	17	75	780	14	200
KK	2	23	100	780	14	200
L	2	31	135	640	14	200
LQ	2.5	31	135	640	14	200
LL	3	32	140	520	14	200
LS	3	45	200	640	14	200
Q	4	68	300	520	14	200
M	4	95	420	420	14	200
QS	6	114	500	520	14	200
N	6	136	600	350	8.5	125
R	8	250	1100	280	8.5	125
P	10	340	1500	230	8.5	125
316 Stainless Steel Models
Size	Standard Port	Nominal Capacity at Maximum Speed		Maximum Speed	Maximum Pressure*
	Inches	m³/hr	GPM	RPM	BAR	PSI
F	0.5	0.3	1.5	1800	14	200
FH	0.75	0.7	3	1800	14	200
G	1	1	5	1200	14	200
H	1.5	2	10	1200	10	150
HL	1.5	5	20	1200	10	150
K	2	11	50	520	10	150
KK	2	15	65	520	10	150
LQ	2.5	21	90	420	10	150
LL	3	25	110	420	10	150
LS	3	36	160	520	8.5	125
Q	4	45	200	350	8.5	125
M	4	64	280	280	8.5	125
QS	6	71	310	350	8.5	125
N	6	138	600	280	7	100
R	8	250	1100	280	7	100

* Max. Differential Pressure

Click here to view literature for the 125, 4125, 123, 4123, 127, & 4127 models.
Click here to view literature for the 225, 4225, 223, 4223, 227, & 4227 jacketed models.
Click here to view literature for the 335, 4335, 333, 4333, 337, & 4337 jacketed models.
Click here to view literature for the 724 & 4724 models.