Hydraulic Ram Pumps & Other Pumps

Air Diaphragm Pumps

An Air Operated Diaphragm Pump (AODD) is a type of positive displacement pump. The pump has two pumping chambers that are alternately filled and discharged by the movement of flexible diaphragms. The pump used compressed air is alternately fed to, and vented from, air chambers on the opposite sides of the diaphragms to create the pumping action. They are reliable, easy to maintain and very durable however they limited to low pressure, they can be noisy, and they can be prone to freezing if weather conditions drop below certain temperatures.

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Centrifugal Pump

Centrifugal pumps are turbomachines that pump liquids by means of centrifugal force generated by rotating impellers. Depending on the design of the pump or impeller, the liquid leaves the impeller in radial or axial direction.

 

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Peristaltic Pumps

Peristaltic pumps are a type of positive displacement pump.

 

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Progressive Cavity Pumps

Progressing cavity pumps are often installed for handling viscous fluids at high flow rates or where a high discharge pressure is required with a smooth flow. Typical fluids may include slurry, mashes, pulps, dough from waste water treatment plants, anaerobic digestion facilities and paper recycling plants.

 

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Ram Pump

This is a ram type reciprocating piston pump that is driven by a separate electrically powered hydraulic power unit. The pump and hydraulic power unit form a single integrated pump set.

The pump is of robust, heavy-duty design and construction with an anticipated working life well in excess of 20 years. The pump body and the valve boxes are one piece steel fabrications. The sludge ram is manufactured from stainless steel. The sludge seals are maintenance free chevron rings, which are replaceable as a service item without the removal of the sludge ram.

Different Ram Sizes Available:

110
160
267
320
415
495

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Specifications

Construction

The pump body and the valve boxes are one piece steel fabrications. The sludge ram is manufactured from stainless steel. The sludge seals are maintenance free dual chevron rings, which are replaceable as a service item without the removal of the sludge ram. The first set of rings provide the initial seal between the main ram and the gland housing, with the upper chevron providing a secondary seal and scrapper facility to ensure clean efficient reciprocation of the ram. Light weight, easily removable, guards enclose the exposed portion of the sludge ram and hydraulic cylinder piston rod. Delivery sludge dampers are provided to eliminate the hammer due to the pulsating action of the pump. These dampers are not coded pressure vessels. The hydraulic cylinder driving the sludge ram is built to off shore specifications and is of a hardwearing design featuring a chrome piston rod. The hydraulic cylinder also features extensive internal guidance and support for the piston rod thereby eliminating lateral forces upon the hydraulic seals, which can promote oil leaks. The top of the hydraulic cylinder features internal, hydraulic cushioning to facilitate absolute control over the sludge ram at the top of the stroke where the ram changes direction from up to down. This contributes to the quite operation of the pump.

The hydraulic cylinder is supported upon a fabrication mounted on top of the pump body through which the chrome piston rod passes.

The pump is a simple robust mechanical construction driven by state of the art variable hydraulics in turn controlled by electronic proximity switches to determine position and direction of the main ram.

1. Pump Body
2. Main Ram
3. Main Gland Ring
4. Secondary Gland Ring
5. Main Gland Chevrons
6. Secondary Gland Chevrons
7. Gland Flush Valve
8. Guide Bearing
9. Vent Valve

Suction & Delivery Valves

Suction and delivery valves are of the ball valve type and consist of a polyurethane iron cored ball and a solid polyurethane valve seat. The fabricated ball valve housing is constructed to allow adequate clearance for the passage of large solids. The passage of material through the valve box causes the ball valve to continually rotate ensuring the ball valve receives even wear, especially when pumping abrasive Slurries.  Removal of the valve box lid allows easy access to the valve box chamber for ball valve and seat replacement.

Construction Materials

For most applications the pump is constructed from fabricated mild steel with a stainless steel main ram and polyurethane gland packing, ball valves and seats. However for applications where temperature or abrasion may be an issue the pump can be constructed with more suitable materials to withstand the duty.

 

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Product Dowloads

Ram Pump Brochure

Ram Pump Flyer

Advantages of a Vertical Ram Pump Willet Pump

 

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