CEM – Peripheral pumps


Peripheral pumps Construction features:

Bronze (PB)
Pump body: Bronze, Motor Support: Bronze
Impeller: Brass alloy, Shaft: AISI 316 Stainless steel
Mechanical seal: Ceramics, Graphite, NBR (special corrosion-proof)

Bronze (PCC)
Pump body: Cast Iron, Motor Support: Cast Iron
Impeller: Brass alloy, Shaft: AISI 316 Stainless steel
Mechanical seal: Ceramics, Graphite, NBR (special corrosion-proof)



Single-impeller electric peripheral pumps capable of developing high pressure as compared to a limited flow rate. These electric pumps are widely used in the nautical sector where they are commonly used to deliver fresh water (Cast Iron) or sea water (Bronze), to wash decks and chains, or to deliver pressurised water to onboard appliances such as showers, washbasins, toilets, etc. Automatic operation is achieved by equipping the pumps with small or medium-sized surge tanks

Ocean Footprint Check Valve
Ocean Footprint has a range of Stainless Steel Spring Check Valves in many sizes

Installing a non-return valve at the suction inlet is recommended on a Peripheral pump

A peripheral pump is a niche product in-between a displacement pump and a centrifugal pump, in which the medium is pumped into a peripheral channel. Today, the peripheral pump has become crucial in many applications.

When the pump is started, the fluid is sucked through the suction flange directly into an annular channel in which the peripheral impeller rotates. The impeller consists of straight vanes that set the fluid into a circular motion. After passing through the annular channel, the fluid exits the pump through the outlet. In the annular channel, kinetic energy is imparted to the fluid by the vanes, increasing the fluid pressure. This working principle is very similar to how a side channel pump works.

Unlike ordinary centrifugal pumps, the characteristic curves do not flatten as the fluid flow decreases. The pump curves are rather straight lines with maximum heads at low flows and low heads at peak flows because a peripheral pump is a displacement pump.

CEM Pumps and Blowers - PB (Bronze head) and PCC (Cast Iron Head) pumps technical overview
PB and PCC pumps technical overview

Peripheral pumps MOTOR DETAIL:
Direct current: 

  • Wound field electric motor 12/24V DC
  • Protection IP23
  • Insulation Class F
  • Continuous Duty (S1)

Alternating current:

  • Asynchronous electric motor
    • 110V single-phase (MS) – 60Hz (available on request)
    • 230V single-phase (M) – 50Hz (60hz available on request)
    • 230~400VAC Three-phase – 50Hz (60hz available on request)
  • Protection IP54
  • Insulation Class F
  • Continuous Duty (S1)

Scope of operation: Liquid free of solid impurities
Temperature range of the liquid: from + 0 to + 70 °C.
Max. suction depth: 6 m
Static pressure inside the pump body: 6 bar max.

Manufacturer’s website for peripheral pumps

Additional information


Bronze, Cast Iron


12V DC, 24V DC, 230V, 230~400V

About CEM

About CEM Pumps and Blowers

Established in 1970 C.E.M. elettromeccanica S.r.l. has been a leading manufacturer of electric pumps and DC motors primarily focussed for use in the maritime sector
In the 48 years we have been making motors and our constant expansion in the national and the international markets have resulted in the broadening of our extensive product range

highest quality materials

This makes us the ideal partner for large and medium-sized boat builders of pleasure, fishing and military vessels.
Our extensive range now includes:

  • DC and AC electric pumps
  • Belt driven pumps, with manual or electro magnetic clutch
  • hydraulically driven pumps
  • water pressure systems
  • centrifugal and axial blowers
  • diesel driven pumps
  • manual pumps
  • DC motors

Our commitment to using the highest quality materials used, the special care invested in the design and in the innovative production processes we adopt, we are able to offer excellent performances and a remarkable lifespan of our products exactly what you need when our product can offer extra hours of safety when in difficulty
All of our products are built to standards that are in accordance with classification and certification can be obtained from each of the bodies: Bureau Veritas, Det Norske Veritas (DNV), Lloyd’s Register and RINA