Blackmer G Series Internal Gear Pumps

Blackmer G Series Internal Gear Pumps

Blackmer® G Series Internal Gear Pumps are the answer when you demand more from your gear pump. G Series positive displacement gear pumps are the premium, dependable substitutes for rival types. They offer the toughness, adaptability, and efficiency required to securely and safely manage all of your difficult fluid-handling tasks. Replace your current gear pump concerns with a robust, adaptable, and effective solution that offers peace-of-mind performance backed by excellent and knowledgeable customer service and factory support. Whether it's just time for an upgrade or you're looking for a jacketed pump to maintain process temperature and integrity during operation.

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Features
Specifications
Technical Data

Compatibility with Competing Pumps

The G Series Internal Gear Pumps boast interchangeability with as much as 95% of the presently utilized mechanically sealed, packed, and seal-less internal gear pumps. Notably, this interchangeability comes without the need for any modifications to piping, driver, baseplate, or coupling. These pumps, available in cast iron, carbon steel, and stainless steel options, are meticulously crafted to seamlessly replace various models of competitor pumps.

Direct Replacement Parts Interchangeability

The components of the G Series are specifically engineered as direct replacements for a range of Viking® pump models, including H, HL, K, KK, L, LQ, LL, LS, Q, and QS. Offered in cast iron, carbon steel, and stainless steel constructions, these parts align precisely with their counterparts from competing pumps, as detailed in our Cross Reference Guide.

Universal Design Seal Chamber with Robust Oversized Bearing Housing

Featuring an oversized bracket and seal chamber, the G Series accommodates various sealing technologies such as packing, mechanical seals, and lip seals. The substantial cast-iron bearing housing allows for the removal of mechanical seals without necessitating the removal of the gear pump from service.

Jacketed Pump Options for Process Reliability

Exclusive to G Series G2-55 - 222 cast iron models, jacketed pump components efficiently heat the seal area and pump internals. This ensures the maintenance of process temperature and integrity during operation. The jackets provide enhanced temperature control, preventing product hardening and potential seal damage upon startup. Additionally, this feature allows for faster startup compared to a cold pump.

Available Materials

Cast Iron
Carbon Steel
Stainless Steel

Max Temperature

650°F (343°C)

Jacketed Option (Cast Iron Only)

G2-55
G2-69
G2-82
G2-133
G2-222

Capacity

15 gpm to 500 gpm (3.4 m³/h to 113.6 m³/h)

Max Pressure

Cast Iron – 200 psi (13.8 bar)
Carbon Steel – 200 psi (13.8 bar)
Stainless Steel – 150 psi (10.3 bar)

Port Size

MODEL	Standard Non-Jacketed (G1) CAST IRON PORT SIZES²		Jacketed (G2) CAST IRON PORT SIZES²		Standard Non-Jacketed (G1) CARBON STEEL PORT SIZES¹		Standard Non-Jacketed (G1) STAINLESS STEEL PORT SIZES¹
MODEL	THREADED	FLANGED	THREADED	FLANGED	THREADED	FLANGED	THREADED	FLANGED
G1-2 G1-4	1-1/2" NPT	N/A	N/A	N/A	N/A	1-1/2" ANSI	N/A	1-1/2" ANSI
G1-24 G1-32	2" NPT	N/A	N/A	N/A	N/A	2" ANSI	N/A	2" ANSI
G1-55 / G2-55	2" NPT	2-1/2" ANSI	2" NPT	2-1/2" ANSI	N/A	2-1/2" ANSI	N/A	2-1/2" ANSI
G1-69 / G2-69 G1-82 / G2-82	N/A	3" ANSI	N/A	3" ANSI	N/A	3" ANSI	N/A	3" ANSI
G1-133 / G2-133	N/A	4" ANSI	N/A	4" ANSI	N/A	4" ANSI	N/A	4" ANSI
G1-222 / G2-222	N/A	6" ANSI 180°	N/A	6" ANSI 180°	N/A	6" ANSI 180°	N/A	6" ANSI 180°

Pump Selection Performance Criteria

Nominal Pump Rating

Max. Discharge Pressure

Max.

Temperature

Nominal Pump Rating

Max. Discharge Pressure

Max.

Temperature

Nominal Pump Rating

Max. Discharge Pressure

Max.

Temperature

Cast Iron

Carbon Steel

Stainless Steel

Model

RPM

GPM

(m3/h)

PSIG (bar)

Fahrenheit (Celsius)

RPM

GPM

(m3/h)

PSIG (bar)

Fahrenheit (Celsius)

RPM

GPM (m3/h)

PSIG (bar)

Fahrenheit (Celsius)

G1-2

1,750

15 (3.4)

200 (13.8) >20 cSt

650° (343°)

1,750

15 (3.4)

200 (13.8) >20 cSt

650° (343°)

1,150

10 (2.3)

150 (10.3) >550 cSt

500° (260°)

G1-4

1,750

30 (6.8)

200 (13.8) >20 cSt

650° (343°)

1,750

30 (6.8)

200 (13.8) >20 cSt

650° (343°)

1,150

20 (4.5)

150 (10.3) >550 cSt

500° (260°)

G1-24

780

75 (17.0)

200 (13.8) >20 cSt

650° (343°)

780

75 (17.0)

200 (13.8) >20 cSt

650° (343°)

520

50 (11.4)

150 (10.3) >550 cSt

500° (260°)

G1-32

780

100 (22.7)

200 (13.8) >20 cSt

650° (343°)

780

100 (22.7)

200 (13.8) >20 cSt

650° (343°)

520

65 (14.8)

150 (10.3) >550 cSt

500° (260°)

G1-55 / G2-55

640

135 (30.7)

200 (13.8) >20 cSt

650° (343°)

640

135 (30.7)

200 (13.8) >20 cSt

650° (343°)

420

90 (20.4)

150 (10.3) >550 cSt

500° (260°)

G1-69 / G2-69

520

140 (31.8)

200 (13.8) >20 cSt

650° (343°)

520

140 (31.8)

200 (13.8) >20 cSt

650° (343°)

420

110 (25.0)

150 (10.3) >550 cSt

500° (260°)

G1-82 / G2-82

640

200 (45.4)

200 (13.8) >165 cSt

500° (260°)

640

200 (45.4)

200 (13.8) >165 cSt

500° (260°)

520

160 (36.3)

125 (8.6) >550 cSt

500° (260°)

G1-133 / G2-133

520

300 (68.1)

200 (13.8) >165 cSt

500° (260°)

520

300 (68.1)

200 (13.8) >165 cSt

500° (260°)

350

200 (45.4)

125 (8.6) >25 cSt

500° (260°)

G1-222 / G2-222

520

500 (113.6)

200 (13.8) >165 cSt

500° (260°)

520

500 (113.6)

200 (13.8) >165 cSt

500° (260°)

350

320 (72.7)

125 (8.6) >25 cSt

500° (260°)

Materials of Construction

Description	Part		Cast Iron	Carbon Steel	Stainless Steel
Pressure Containing	Case		Cast Iron, ASTM A48 Class 35B	Carbon Steel, ASTM A216 Grade WCB	Stainless Steel, ASTM A743 Grade CF8M
	Head		Cast Iron, ASTM A48 Class 35B	Carbon Steel, ASTM A216 Grade WCB	Stainless Steel, ASTM A743 Grade CF8M
	Bracket		Cast Iron, ASTM A48 Class 35B	Carbon Steel, ASTM A216 Grade WCB	Stainless Steel, ASTM A743 Grade CF8M
	Pressure Relief Valve		Cast Iron, ASTM A48 Class 35B	Carbon Steel, ASTM A216 Grade WCB	Stainless Steel, ASTM A743 Grade CF8M
Product Contact	Idler Gear		Cast Iron, ASTM A48 Class 35B1		Stainless Steel, ASTM A564 Type 630 (17-4PH)5
	Rotor	Standard	Cast Iron, ASTM A48 Class 35B 2,4		Stainless Steel, ASTM A564 Type 630 (17-4PH)5
		Steel Fitted	Carbon Steel, ASTM A311 Grade 1045 Class A 3,4		N/A
	Rotor Shaft		Steel, ASTM A311 Grade 1045		Stainless Steel, ASTM A276 Grade 316
	Idler Pin		Alloy Steel, Hardened		Stainless Steel, Hardened
	Idler Bushing		Carbon Graphite, Bronze, Tungsten Carbide, Hardened Cast Iron		Carbon Graphite, Bronze
	Bracket Bushing		Carbon Graphite, Bronze, Tungsten Carbide, Hardened Cast Iron		Carbon Graphite, Bronze
Non-Product Contact	Bearing Housing		Cast Iron, ASTM A48 Class 35B

Competitor Model Cross Reference

BLACKMER G SERIES	BLACKMER E SERIES	VIKING®	TUTHILL®	GORMAN-RUPP®
G1-2	E1-2	H	15	GHS 1-1/2
G1-4	E1-4	HL	30	GHS 1-1/2
G1-24	E1-24	K	120	GHS 2
G1-32	E1-32	KK	130	GHS 2
G1-55 / G2-55	E1-55	L & LQ	200	GHS 2-1/2, 3
G1-69 / G2-69	E1-69	LL	210	GHS 3
G1-82 / G2-82	E1-82	LS	250	GHS 3
G1-133 / G2-133	E1-133	Q	N/A	GHS 4
G1-222 / G2-222	E1-222	QS	550	GHS 6