Marzocchi Gear Pumps ALP, GHP, 1P | Official Distributor

Official Marzocchi Pompe distributor
ALP, GHP, 1P series and micropumps usually in stock, shipped within 24 hours
ALP and GHP double and multiple pumps assembled quickly
Interchangeable with Casappa PLP and PHP · warranty up to 12 months

0.19 – 200cm³/rev displacement

up to 280 barcontinuous pressure (GHP)

up to 310 barpeak pressure (GHP)

up to 7000rpm (micropumps)

4 familiesALP, GHP, 1P, 0.25 and 0.5

EU · SAE · DEflanges and shafts available

Prefer to talk to a technician? +39 0331 772410 · info@interfluid.net

Marzocchi ALP series external gear pump — **Marzocchi ALP**Aluminium external gear pump, from 1.4 to 200 cm³/rev.

Marzocchi hydraulic pump range includes the new products ALP1, ALP2, ALP3, and ALP4, suitable for applications in both the mobile and industrial fields.

They are also available in a reversible version or with a pressure limiting valve.

Marzocchi external gear pumps GHP series are also suitable for both mobile and industrial applications. It is possible to choose the shaft, flange and the inlet and pressure port.. The GHP range includes pumps with independent driving systems and reversible pumps.

The external gear micropumps of the 0.25 and 0.5 series can also be used at high pressure applications. The range includes multiple micropumps, bi-rotational micropumps or micropumps with check valves.

Available in a reversible, double, and with pressure relief valve version. With the 1P range, you can choose the outlet, suction ports, shafts, and various flange options.

They are obtained through the combination of ALP and GHP pumps.

Technical data by series

Summary values per group, from the official Marzocchi Pompe catalogue tables. Pressures and speeds vary with displacement: for each individual model, the catalogue tables prevail.

Group	Displacement (cm³/rev)	Continuous pressure P1 (bar)	Peak pressure P3 (bar)	Max speed (rpm)	Construction
ALP1	1.4 – 13.8	150 – 250	180 – 290	1800 – 6000	Aluminium
ALP2	4.5 – 35.2	140 – 250	170 – 290	1800 – 4000	Aluminium
ALP3	20 – 87	140 – 230	170 – 270	2000 – 3500	Aluminium
ALP4	87 – 200	130 – 240	150 – 280	2000 – 2800	Aluminium
GHP1	1.4 – 13.8	150 – 270	180 – 310	1800 – 6000	Aluminium body, ductile iron flange and cover
GHP2	4.5 – 35.2	160 – 280	190 – 310	1800 – 4000	Aluminium body, ductile iron flange and cover
GHP3	20 – 87	160 – 280	190 – 310	2000 – 3500	Aluminium body, ductile iron flange and cover
1P	0.8 – 8.0	120 – 230	160 – 270	1200 – 6000	Aluminium
0.25	0.19 – 0.64	150 – 230	190 – 270	5000 – 7000	Aluminium (micropump)
0.5	0.50 – 1.50	150 – 230	190 – 270	3000 – 7000	Aluminium (micropump)

ALP or GHP? For the same group the displacements are the same; the GHP, with ductile iron flange and cover, works at higher pressures and is the choice for heavy-duty use.

Options and special versions

Flanges and shafts in European, SAE (J744) and German (BK) standards
Reversible "R" version with internal or external drain (for the GHP, pressures are reduced by about 15%)
Integrated pressure relief valve (VM) on ALP2 and 1P
V: fluid up to +120 °C · VV: up to +150 °C at max 20 bar
ST: from −40 to +120 °C · H: from −40 to +80 °C
TR: inlet pressure up to 6 bar absolute

Double and multiple pumps

ALP and GHP elements are modular and can be combined into two, three or more stage pumps, also with micropumps. The first element must be of the same or larger group and displacement than the following ones; the maximum speed is that of the slowest element.

Fluid and filtration

Mineral oil DIN 51525 / VDMA 24317
Recommended viscosity 10 – 100 cSt (permitted 6 – 500 cSt, at start-up below 2000 cSt)
Standard temperature from −10 to +80 °C (from −15 °C for 1P and micropumps)
Inlet pressure 0.7 – 3 bar absolute

Working pressure	ISO 4406	Filter (βx = 75)
< 140 bar	19/16	25 – 40 µm
140 – 210 bar	18/15	12 – 15 µm
> 210 bar	17/14	6 – 12 µm

Marzocchi pumps: range and interchangeability

Marzocchi external gear pumps cover displacements from 1.4 to 200 cm³/rev in the ALP and GHP series, and from 0.19 cm³/rev with 1P and micropumps, in unidirectional and bidirectional versions, with flanges and shafts in European, SAE and German standards, for mobile and industrial applications. For very low noise levels, see also the Marzocchi Elika helical gear pumps.

Interchangeability with Casappa

Marzocchi external gear pumps are interchangeable with the corresponding Casappa series. Send us the code of the pump to replace and our technicians will confirm the correct Marzocchi equivalent.

Marzocchi series	Equivalent Casappa series
ALP	PLP
GHP	PHP, HD

Why buy Marzocchi from Interfluid

Official Marzocchi Pompe distributor
Over 50% of requests fulfilled from stock, shipped within 24 hours for items in stock
Technical quote within one working day
ALP and GHP double and multiple pumps assembled quickly

Tell us the Marzocchi code or the code of the pump to replace – request a quote.

Casappa is a trademark of Casappa S.p.A., mentioned for reference and interchangeability purposes only.

Already a registered customer? Check real-time stock and order on Fluid-Hub.net, with an extra 2% discount.

Frequently asked questions

What is the difference between Marzocchi ALP and GHP pumps?

For the same group they have the same displacements. The ALP is entirely aluminium; the GHP has an aluminium body with ductile iron flange and cover and withstands higher pressures: up to 280 bar continuous and 310 bar peak, against 250 and 290 bar for the ALP.

Do Marzocchi pumps replace Casappa pumps?

Yes: the ALP series corresponds to the Casappa PLP, the GHP to the Casappa PHP and HD. Send us the code of the pump to replace and our technicians will confirm the Marzocchi equivalent.

Can double or multiple pumps be made?

Yes. ALP and GHP elements are modular and can be combined into two, three or more stage pumps, also with the 0.25 and 0.5 micropumps. We assemble them quickly based on your configuration.

What filtration does a Marzocchi gear pump need?

It depends on the working pressure: ISO 4406 class 19/16 below 140 bar, 18/15 between 140 and 210 bar, 17/14 above 210 bar. The catalogue indicates 18/15 as the generally recommended level.

How soon will I receive price and availability?

A technician will reply within 24 working hours. Items in stock are shipped within 24 hours.

Can't find the code you need?Send us the Marzocchi code or the code of the pump to replace.

Request price and availability

Marzocchi external gear pumps

Series	Average stock	Discover online availability
ALP	✅ Usually available
GHP	✅ Usually available
1P	✅ Usually available
0.25 & 0.5	✅ Usually available

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