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Self-Priming Gear Pumps

ECO
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STAINLESS - ALLOY 20 HASTELLOY C

PUMP IDENTIFICATION NUMBER SELECTION GUIDE

ECO self-priming Gearchem pumps are designed to provide reliable, long-life service in applications involving corrosive, hazardous and other difficult to handle fluids. These pumps are extremely rugged and are constructed with precision, high density investment castings and offer many features normally found only in larger, more expensive pumps.

Gearchem pumps are available with a broad range of metallic and non-metallic materials to handle non-abrasive, clear, lubricating or non-lubricating fluids over the entire pH range. They may be used in general transfer or high-accuracy metering operations, including pumping from atmosphere into vacuum, vacuum into vacuum, vacuum into atmosphere or vacuum into higher than atmospheric pressure.

SPECIFICATIONS

	G2	G4	G6	G8	GH8	GA12	GA16
Port size & type	1/4” NPT or BSPT	1/2” NPT or BSPT	3/4” NPT or BSPT	1” NPT or BSPT	1” NPT or BSPT	1-1/2” FNPT or BSPT; 150#ANSI RF flange	2” 150# ANSI RF flange
Port locations	Side inlet and outlet
Direction of rotation	Bidirectional
Theoretical displacement gal/100 rev (cc/rev)	.108 (4.10)	.189 (7.16)	.684 (25.89)	1.368 (51.79)	1/368 (51.79)	2.792 (105.7)	5.584 (211)
Drive shaft diameter	3/8”	3/8”	1/2”	1/2”	1/2”	1"	1"
Maximum differential pressure	100 psi (700 kPa)	100 psi (700 kPa)	100 psi (700 kPa)	50 psi (350 kPa)	100 psi (700 kPa)	150 psi1 (1050 kPa)	100 psi (700 kPa)
Minimum system pressure	0.1mm Hg(abs)
Maximum system pressure	150 psig
Maximum speed	1725 rpm	1725 rpm	1725 rpm	1725 rpm	1725 rpm	1150 rpm	1150 rpm
Capacity at maximum speed, 0 psi2	1.5 gpm (.34 m3/hr)	3 gpm (.68 m3/hr)	10 gpm (2.27 m3/hr)	22 gpm (5.0 m3/hr)	22 gpm (5.0 m3/hr)	28 gpm (6.3 m3/hr)	60 gpm (13.6 m3/hr)
Maximum viscosity3	100,000 cP
Minimum viscosity	None
Maximum fluid temperature	500oF (260oC)
Minimum fluid temperature	-100oF (-73oC)
Fluid pH range	0 - 14
Bearing type	Internal sleeve
Bearing lubrication	By pumped fluid
Packing arrangements	Standard or lantern ring box	Standard or lantern ring box	Standard or lantern ring box	Standard or lantern ring box	Lantern ring box	Lantern ring box	Lantern ring box
Mechanical seals	Single internal, double or external	Single internal, double or external	Single internal, double or external	Single internal, double or external	Single internal or double	Single internal or double	Single internal or double
Approximate weight, pump only	4.2 lbs (1.9 kg)	4.2 lbs (1.9 kg)	7 lbs (3.2 kg)	10 lbs. (4.5 kg)	14 lbs. (6.3 kg)	39 lbs. (17.6 kg)	80 lbs. (36 kg)

1. Consult factory for approved application above 100 psi	3. At reduced speeds. (Higher viscosities possible
2. At nominal viscosity	with further speed reduction.)