P Series Slurry Pumps

//P Series Slurry Pumps
P Series Slurry Pumps 2018-03-06T22:55:34+10:00
sludge pumps

Ramparts P Series Air Driven Diaphragm Pumps

The Ramparts P Series range of single acting air operated diaphragm pumps and slurry pumps take over where other pumps fail. In applications where progressive cavity pumps or lobe pumps wear prematurely or double diaphragm pumps struggle, Ramparts extra heavy duty slurry pumps step up.  Advantages include:

  • Advanced DRC (separate) Controllers
  • Self priming pump to 6 metres
  • Handle slurries to 70% solids by volume
  • Superior solids handling design
  • Run Dry indefinitely
  • Dead-head without damage
  • Re-build diaphragm pumps for 15% of their purchase price (not 80% like some PD pumps)
  • Improved maintenance features to greatly reduce maintenance time and costs
  • A variety of materials of construction  to handle abrasive and/or corrosive fluids, including a variety of diaphragm materials and slurry pump linings
  • Automatic filter press feed control options
  • Flows to 1200 litres per minute with models from 1½” through to 6”
  • Heads to 65m

P Series Slurry Pump – Performance

  • Flows:  0.5 l/s – 20 l/s
  • Heads: 3m – 60m
  • Solids: to 76mm
  • Size: 1-1/2″, 2″, 3″, 4″+ 6″
  • Priming: Self-Priming Air Operated Diaphragm Pumps
  • Application: Specialists Sludge Pump and Slurry Pump

slurry pumps

P Series Slurry Pump – Special Features

Rugged Construction
The rugged construction and extra-thick pump casing of Gorman-Rupp Air Operated Diaphragm pumps stand up to the abuses of the most demanding sludge and slurry applications. They overcome the “high wear” problem commonly found in double diaphragm pumps and progressive cavity pumps. They are capable of operating dry, on suction lifts up to 6 metres, and handling high solids content up to approximately 70%. Depending on the slurry pump model you choose, Gorman-Rupp Air Operated Diaphragm pumps will handle solids up to 100mm in diameter. They are designed to handle heavy sludges and slurries in the most hostile environments. These include steel mills, paper mills, mines, chemical plants, food processing plants, refineries, wastewater facilities and hundreds of other applications where other pumps struggle.
slurry pump
Efficient Air Cylinder Design
Air is applied uniformly on top of the diaphragm which causes less resistance than spring-operated cylinders. This reduces stress on the diaphragm. The result is longer diaphragm life, reduced air consumption which saves money over the life of the pump, quieter operation and virtual elimination of muffler icing.
slurry pumps
Low Maintenance
Air Driven Diaphragm pumps have only three moving parts so maintenance and service are minimal. Replacement of pump diaphragm can be accomplished in about one hour without disconnecting piping. Check valves can also be quickly and easily cleaned out using “twist lok” handles. No special tools required.
diaphragm pumps

P Series Slurry Pump – Video

P Series Slurry Pump – Data Sheets

Extra Heavy Duty

Ramparts P and iPC Series of single acting air driven diaphragm pumps are built tough. Here’s what
makes them the toughest sludge or slurry pumping choice:

  • Extra thick cast iron casings (up to 32mm thick – depending on pump model)
  • Separately constructed cast iron ball check valves (not just part of the discharge piping)
  • Bigger, thicker, heavier diaphragms.
  • Replaceable ball seats

Ramparts P Series Controls

An advanced DRC solid-state controller energises the Ramparts P Series’ solenoid valves to drive the pump’s suction and discharge strokes. The controller provides the following functions:

  • Allows independent pressure adjustment of suction and discharge stroke (saving energy and lengthening diaphragm life)
  • Allows cycle adjustment from 0-40 strokes per minute
  • Allows 0-5 seconds discharge time
  • Can run in manual or automatic [remote start/stop] modes
  • Has an LCD stroke counter (totaliser)
  • Liquid filled suction and discharge panel mounted pressure gauges
  • Diaphragm failure alarm (optional)
  • Ramp-Up filter press feed option – automatically follows the increasing pressure in a filter press (optional)
  • Step-up filter press feed – increases the pump’s discharge pressure in four adjustable timed pressure steps (optional)
  • Can be set up for duplex pump operation with sequential strokes (optional)

Superior Solids Handling

The rugged construction and extra-thick casing of RamParts air-driven diaphragm pumps stand up to the abuses of the most demanding sludge and slurry applications. They overcome the “high-wear” problem commonly found in double diaphragm and progressive cavity pumps.

They also handle larger solids than most air driven pumps, and many other styles of positive displacement pumps. The 15P and 20P will handle 25mm spherical solids through their ball check valves, the 30P and 40P will handle a 28mm spherical solid and the 60P will handle a 63mm sphere. If ball check valves are replaced with full passage flap valves, solids handling capacities can increase to equal pump suction/ discharge size.

RamParts pumps will handle abrasive and/or corrosive slurries, shear sensitive slurries, delicate crystal slurries, and slurries with up to 75% solids.

RamParts Maintenance Features

Having only 3 moving “wetted” parts, the RamParts diaphragm pump is very easy to maintain.
The ball valves are easily accessed (without tools) for inspection or choke removal. Ball checks are also easily replaced the same way.Diaphragms are also easily replaced with the aid of the (optional) “SidekickTM”.
[dt_gap height=”25″][dt_gap height=”25″]
Because parts replacement is simple, and the major wearing parts consist of just a diaphragm, two ball checks, two seats and two gaskets, the cost of a complete overhaul is just a fraction of that of
most other positive displacement pump types where the likes of rotors and stators are very expensive (not to mention difficult to remove and replace).

Ramparts Materials of Construction

Ramparts Diaphragm pumps are available with diaphragms and ball valves in the following materials:

Material Temperature Limits  (oC) Suitable Applications
Hypalon -23 to 93 Moderate chemical resistance, for general purpose
Neoprene -23 to 93 Moderate chemical resistance, good for fats, grease and solvents
Nordel (EPDM) -40 to 137 Excellent for low temperature and dilute acids
Nitrile (Buna-N) -23 to 87 General purpose for oils, water and hydraulic fluids
Viton -40 to 149 Excellent chemical resistance. Poor flex life for diaphragms
Dura-XL (Santoprene) -40 to 107 Excellent chemical and abrasion resistance
Dura-S (Hytrel) -28 to 104 Excellent abrasion resistance, FDA material, general purpose


Consult the Ramparts chemical resistance chart for specific chemicals.The following are the available materials for pump construction:

Pump Construction Lining material
15P Ductile Iron Neoprene, Nordel, Nitrile and ETFE*
20P Ductile Iron + 316SS Neoprene, Nordel, Nitrile and ETFE*
30P Ductile Iron Neoprene, Nordel, Nitrile and ETFE*
40P Ductile Iron Neoprene, Nordel, Nitrile and ETFE*
60P Ductile Iron N/A
15iPC Ductile Iron ETFE* only
20iPC Ductile Iron Neoprene, Nordel, Nitrile and ETFE*
30iPC Ductile Iron Neoprene, Nordel, Nitrile and ETFE*
40iPC Ductile Iron Neoprene, Nordel, Nitrile and ETFE*


ETFE is a fluoropolymer (aka – Tefzel). It is the best lining material for chemical and abrasive resistance in acid and organic slurries.