Hydraulic Centrifugal Pumps

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Centrifugal pump design provides good resistance to abrasive solutions and extra flow for agitation. The advantages of the hydraulic pump are mounting versatility, customized performance, and ease of maintenance. They are designed to offer long trouble-free life when matched to a hydraulic power source which will give the correct oil flow and pressure. A wide range of pump outputs can be achieved by simply controlling oil flow and pressure to the hydraulic motor.

We offer a comprehensive range of rugged and dependable products to meet virtually any flow, pressure, material and cost requirement. Tough open and closed center tractor applications challenge any pump’s reliability. Delavan Magnum pumps meet the challenge with superior design, precision engineering and high-quality components.

These hydraulic centrifugal pumps offer a host of features for typical applications such as agriculture spraying equipment and fluid transfer.

The matched pump and motor provide optimum hydraulic performance for cooler operation and longer life.
Exclusive front and rear wear rings balance the impeller and maximize bearing and seal life.
Corrosion resistant nylon or polypropylene impellers provide extended life.
Designed and built tough to keep on performing in the most challenging applications for agriculture spray equipment and fluid transfer.

These hydraulically-driven, cast iron and stainless steel pumps provide fluid flow up to 191 GPM and pressure to 140 PSI, at temperatures up to 140°F. They are available in open and closed hydraulic system configurations.

Additional features include a corrosion-resistant nylon impeller and Viton/ceramic seals, as standard. A polypropylene impeller and Viton/silicon carbide seals are available. A standard selection of hydraulic motors offers simple off-the-shelf replacement and covers all applications, and types of tractors. Optimum hydraulic performance is achieved with an optimally matched pump and motor, which provides cooler running temperatures for less heat and longer life.

Additional information on how a centrifugal pump works and how to determine pump capacity.

Downloads: Installation Manual (494 KB) HD Magnum Catalog (1.72 MB)

Hydraulically-Driven Magnum Centrifugal Pumps

Hydraulic Centrifugal Pump — (Cast Iron)

HD Magnum Series M125 HydraCentrifugal Pump

Max Recommended Temperature: 140°F
Port Size:
Inlet: 11⁄2 “ FNPT
Outlet: 11⁄4 “ FNPT
Max. Flow: 95 GPM
Max. Pressure-Shut-off: 130 PSI
Hydraulic Motor Ports: 1⁄2 SAE x FNPT
Weight: 29 lbs (13.2 kg)
Motor Housing: Aluminum
Pump Housing: Cast iron or stainless steel
Impeller: Nylon (standard) or polypropylene (optional);
with or without stainless steel inserts
Mechanical Seals:
Cast Iron: Viton/Ceramic Seal (Standard)
Warranty: One Year

M120 Dimensions — **Dimensions** Inches (mm)

Stainless Steel Centrifugal Pump — (Stainless Steel)

Ordering Information - FREE SHIPPING

MODEL	DESCRIPTION	MOTOR	PRICE
M125C-PM37	Centrifugal Pump - Cast Iron, Viton/ Ceramic Seal	PM37	$1,480.75
M125C-PM45	Centrifugal Pump - Cast Iron, Viton/ Ceramic Seal	PM45	$1,543.85
M125S-PM37	Centrifugal Pump - Stainless Steel, Viton/ Silicone Carbide Seal	PM37	$1,616.60
M125S-PM45	Centrifugal Pump - Stainless Steel, Viton/ Silicone Carbide Seal	PM45	$1,665.10

Performance

Pump Flow GPM @ Rated PSI

Motor Size	Oil Flow (GPM)	10	20	30	40	50	60	70	80	90	100	110	120	130
PM45*	11	180	173	165	152	136	123	101	82	61	32	8
	12	185	177	169	160	151	138	121	103	82	63	45	11
	13	191	182	174	168	159	145	133	117	101	86	60	36
PM37	7	69	68	66	63	55	44	25	16
	8	78	76	75	71	69	61	52	34	15
	9	79	77	76	73	70	63	59	46	30	8

NOTE: Smaller displacement motors on larger pumps can cause pressures on hydraulic motor to exceed recommended manufacturer’s specifications. Consult factory for details.

Hydraulic Pump - Stainless Steel — (Cast Iron)

HD Magnum Series M150 HCentrifugal Pump

Max Recommended Temperature: 140°F
Port Size:
Inlet: 11⁄2 “ FNPT
Outlet: 11⁄4 “ FNPT
Max. Flow: 191 GPM
Max. Pressure-Shut-off: 140 PSI
Hydraulic Motor Ports: 1⁄2 SAE x FNPT
Motor Housing: Aluminum
Pump Housing: Cast iron or stainless steel
Impeller: Nylon (standard) or polypropylene (optional); with or without stainless steel inserts
Mechanical Seals:
Cast Iron: Viton/Ceramic Seal (Standard)
SS: Viton/Silicon Carbide (Standard)
Weight: 32 lbs (14.5 kg)
Warranty: One Year

M150 Dimensions — **Dimensions** Inches (mm)

Ordering Information - FREE SHIPPING

MODEL	DESCRIPTION	MOTOR	PRICE
M150C-PM37	Centrifugal Pump - Cast Iron, Viton/ Ceramic Seal	PM37	$1,587.50
M150C-PM58B	Centrifugal Pump - Stainless Steel, Viton/ Silicone Carbide Seal	PM58B	$1,694.20
M150S-PM58B	Centrifugal Pump - Stainless Steel, Viton/ Silicone Carbide Seal	PM58B	$1,907.65

Performance

Pump Flow GPM @ Rated PSI

Motor Size	Oil Flow (GPM)	10	20	30	40	50	60	70	80	90	100	110	120	130
PM37*	7	155	144	127	105	65	21
	8	175	170	161	145	126	104	78	43
	9	180	172	163	151	138	115	88	64	39
PM58 PM58B	13	172	165	159	148	136	124	106	86	66	37	12
	14	180	172	164	156	147	135	120	104	86	69	51	15
	15	185	174	165	159	150	141	131	118	101	88	63	38

NOTE: Smaller displacement motors on larger pumps can cause pressures on hydraulic motor to exceed recommended manufacturer’s specifications. Consult factory for details.

HD Magnum Series M200 Centrifugal Pump

Max Recommended Temperature: 140°F
Port Size:
Inlet: 2" FNPT
Outlet: 11⁄2“ FNPT
Max. Flow: 245 GPMs
Max. Pressure-Shut-off: 145 PSI
Hydraulic Motor Ports: 1⁄2 SAE x FNPT
Weight: 33 lbs (15.0 kg)
Motor Housing: Aluminum
Pump Housing: Cast iron or stainless steel
Impeller: Nylon (standard) or polypropylene (optional); with or without stainless steel inserts
Mechanical Seals:
Cast Iron: Viton/Ceramic Seal (Standard)
SS: Viton/Silicon Carbide (Standard)
Warranty: One Year

M200 Dimensions — **Dimensions** Inches (mm)

Stainless Steel Magnum Pump — (Stainless Steel)

Ordering Information - FREE SHIPPING

MODEL	DESCRIPTION	MOTOR	PRICE
M200C-PM45	Centrifugal Pump - Cast Iron, Viton/ Ceramic Seal	PM45	$1,747.60
M200S-PM58	Centrifugal Pump - Stainless Steel, Viton/ Silicone Carbide Seal	PM58	$2,094.45

Performance

Pump Flow GPM @ Rated PSI

Motor Size	Oil Flow (GPM)	10	20	30	40	50	60	70	80	90	100	110	120	130
PM37*	7	155	144	127	105	65	21
	8	175	170	161	145	126	104	78	43
	9	180	172	163	151	138	115	88	64	39
PM58 PM58B	13	172	165	159	148	136	124	106	86	66	37	12
	14	180	172	164	156	147	135	120	104	86	69	51	15
	15	185	174	165	159	150	141	131	118	101	88	63	38

NOTE: Smaller displacement motors on larger pumps can cause pressures on hydraulic motor to exceed recommended manufacturer’s specifications. Consult factory for details.

Additional Information on Hydraulic Centrifugal Pumps

How Hydraulic Centrifugal Pumps Works

The pump shaft is driven by a hydraulic motor
A constant supply of fluid enters the inlet side of the pump (Note: centrifugal pumps cannot be operated dry!)
As the impeller rotates, centrifugal force pushes the fluid around the pump cavity through the pump housing to the outlet of the pump
The volume of flow is determined by several factors including: speed, operating pressure, size of the pump

How to Determine Pump Capacity for Your Sprayer

Pump Capacity (GPM): Boom Requirement (GPM) + Agitation Requirement (GPM)
Boom Requirement (GPM): Number of nozzles x flow rate per nozzle (GPM at desired PSIG)
Agitation Requirement (GPM): 5% of total tank volume if using liquids; 10% if using wettable powders

Example:

A boom with extended range 80-04 tips (0.40 GPM at 40 PSIG) and a 200 gallon tank with tank agitation.
Pump Capacity = (17 x 0.40) + (5% of 200)
Pump Capacity = 6.8 + 10.0
Pump Capacity = 16.8 GPM

*See individual hydraulic centrifugal pumps specification pages for complete performance information.