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Speroni RS(M) Horizontal Multistage Pumps

Name: Speroni RS(M) Horizontal Multistage Pumps
Brand: Speroni
SKU: 19-15-1046
Price: 605.00 GBP
Availability: InStock

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£605.00 £504.17 (Exc VAT)

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WHY IT WORKS

Built for the job

Cast iron horizontal multistage pump for sprinklers, fire systems, and industrial cooling loops.

The RS(M) is Speroni’s standard horizontal multistage booster pump.

Cast iron construction, stainless steel casing, and a stacked impeller design deliver high head from a modest motor.

This is a workhorse pump found on pressurisation sets, fire-fighting booster systems, and industrial washing lines across the UK.

The RS(M) are multi-staging non-self-priming, horizontal centrifuge pumps. For the pumping of only clean water. They develop high pressures from small motors and operate virtually silent, this makes them great for domestic use, in addition to horticultural and industrial applications.

The horizontal layout makes this pump easy to install on a floor or mounting plate. If floor space is tight, the vertical equivalent (RV) is the better choice; performance is the same.

Where the Speroni RS and RSM are Used

Sprinkler and irrigation pressurisation. Fire-fighting boost systems (with appropriate certification). Industrial washing and process water. Cooling loop circulation. Condensate return systems. Multi-storey buildings fed from stored water (downstream of air gap). Horticultural and agricultural pressurisation.

Operating Conditions: Continuous duty | Max. ambient temp: 40°C | Max. suction lift (+ foot valve): 7 mtrs

Fluid: Clean water | Temperature: 0 - 35°C

Choosing Between the Models

An M at the end of the model name (RSM) means 230V single-phase, No M means 400V three-phase (RS).

Within the RS(M) range, motor power determines the head achievable. Flow stays roughly constant across the models. The 3kW RS 80 is only available in 400V three-phase.

RS Versus RSX: Which One?

The RS has a cast iron pump body with stainless steel casing. Cheaper, suitable for most general non-potable water applications.

The RSX has full stainless steel 304 construction. More expensive, used where food-grade or higher corrosion resistance is required.

With Speroni Pumps, models with an X in the model name (RSX, CMX, CTX) have stainless construction on the wet parts.

SPECIFICATIONS

Full spec sheet

RS(M) specifications
Model	RSM 40	RS 40	RSM 50	RS 50	RSM 60	RS 60	RS 80
Inlet/ mm (BSPF)	32	32	32	32	32	32	32
Outlet/ mm (BSPF)	25	25	25	25	25	25	25
Kw	1.50	1.50	1.90	1.90	2.20	2.20	3.00
Volt	230	400	230	400	230	400	400
Flow ltr/min	160	160	160	160	160	160	160
Head /m	49	49	59	59	71	71	95
W x L x H /mm	194 x 514 x 242	194 x 514 x 242	194 x 543 x 242	194 x 543 x 242	194 x 572 x 242	194 x 572 x 242	194 x 630 x 242
Weight /Kg	22	22	23	23	24	24	25

Common questions

What can the Speroni RS(M) pump, and is it suitable for dirty water or seawater?

The RS(M) is for clean water only, at 0 to 35°C. Typical uses are sprinkler and irrigation pressurisation, fire-fighting boost (with appropriate certification), washing, cooling loops, condensate return and stored-water supply downstream of an air gap. It is not for dirty water, sewage or seawater: the pump body is cast iron. For potable or higher-corrosion duties, the stainless RSX range is the alternative.

See: Speroni RSX(M)4 Horizontal Multistage Pump

Is the RS(M) self-priming?

No. The RS(M) is a non self-priming multistage pump, so it should ideally have flooded suction, with the water level at or above the pump inlet. If it must lift from below, fit a foot valve and keep the suction line full; the maximum suction lift with a foot valve is 7 metres. If you need a self-priming multistage pump, look at the RA(M).

See: Speroni RA(M) Horizontal Self-Priming Multistage Pump

How much pressure does each RS(M) model produce?

Every RS(M) model delivers up to 160 litres per minute; motor size sets the head. The RS(M) 40 reaches 49 metres, RS(M) 50 59 metres, RS(M) 60 71 metres and the RS 80 95 metres. As a guide, 10 metres of head is about 1 bar, so the RS 80 gives up to roughly 9.5 bar at zero flow, falling as flow increases.

Should I choose the horizontal RS(M) or the vertical RV(M)?

Performance is broadly the same: the RSM 40 gives 160 litres per minute to 49 metres and the RVM 40 160 litres per minute to 50 metres. The difference is shape. The RS(M) lies horizontally and is easy to mount on a floor or plate (around 514 to 630 mm long), while the RV(M) stands upright on a smaller footprint (181 x 247 mm) for tight plant rooms.

See: Speroni RV(M) Vertical Multi-Stage Pump

What connections does the RS(M) have and what do I need to install it?

Every model has a 1¼ inch female BSP inlet and 1 inch female BSP outlet. Use pipe or non-collapsing hose no smaller than these. If the water is below the pump, add a foot valve with strainer on the suction line; a non-return valve on the delivery side helps hold pressure in the system.

See: Brass Foot Valve & Stainless Strainer

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