Automotive Industry

Grinding emulsion oil coolant hydraulic fluid sulfuric automotive primer soluble oil varnish disposal varnish additives degreasing baths, Cutting oil, water and glycol mixture, paint

Aviation

Aircraft fuelling and drainage, satellite refueling solid rocket propelling

Missile silos

Beverage Industry: Yeast, diatomaceous, earth slurry, hot pulp, liquid, hop, Syrup, concentrates, gas-liquid mixtures, wine, fruit pulp, fruit juice, corn syrup

Ceramic

Slip, glaze, enamel slip, effluent, clay, slurry, lime slurry, kaolin slurry

Chemical Industry

Acids, alkalies, solvents, suspension, dispersions, magnesium hydroxide, varnishes, sump water resins, latex, adhesives, effluent sludge, stabilizers, filter press, electrolytes

Construction Industry

Sump and pit drainage, cement slurry, ceramic tile adhesive, rock slurry, ceiling coating paints, texture spray

Cosmetics

Lotions, creams, shampoos, emulsion, hand cream, surfactants, soaps

Electronic Industry

Solvents, electroplating baths, ultra pure liquids, carrier, Fluids, for ultrasonic washing, sulfuric, nitric and acid wastes, etching acids, MEK, Acetone, polishing compounds

Food

Brine chocolates vinegar molasses, dog food, vegetable oil, soy bean oil, Honey, cat food, HCL, animal blood

Furniture Industry

Adhesives, varnishes, dispersion, solvent, stains, Elmer's, Glue, white good glue, solvents, glue (5-6000cps) epoxy, starch adhesive, spray packages

Mining

sump gallery, drainage water drainage, coal sludge and rock slurry, grounting mortar, oil transfer, explosive slurry, adhesive, lube oil, foaming

Municipalities

Tank and sump drainage, sewer cleaning, chemicals, contaminated surface water, emergency pumping, spill clean-up, waste oil, oil/water separators.

Paints & Coatings

Resins, solvents, acrylic, wood preservative stain, concrete paints, varnishes, titanium dioxide slurry, primers stains dispersions, varnish cleaning baths, alkalyd resin

Pharmaceutical Industry

Vegetable extracts, tablet, pastes, ointments, alcohols, filtering aids, ultra filtration, Blood plasma, waste solvents, sump waste

Plating

Anodic sludge, electroplating baths, varnishes, enamels, solvents, clearing baths, filtering

Pulp/ Paper/Packaging

Latex, adhesive, paints, resins, printing link, dispersions, Tio2 slurry, kaolin clay, hydrogen peroxide

Refineries

Tank roof drainage, oil sludge, tank cleaning, tank moat drainage, portable pumping

Road Tanker trucks

Lading and darning of tank by means of pump on vehicles, tank vehicle, washing facilities, acid spraying, foaming

Shipbuilding

Tank and bilge drainage, ship, cleaning stripping, oil skimming, seawater

Smelters, Foundries & Dry Casting

Metal slurry, hydroxide and carbide slurry, dust scrubbing slurry, back wash for flushing of cores, mold release

Textile & Carpet

Dyeing chemical, scotch guard, starch and sizing, resins, dyes. Latex

Water and Sewage Treatment

Milk of lime, thin slurry, effluents, chemicals of filter presses, polymer, waste water

Utility

Contaminated liquids, charging of scrubber, milk of lime, transformer oil, resins

Figuer 1 (Left Stroke)

The air valve direct pressurized air to the back side of diaphragm A. The compressed air is applied directly to the liquid column separated by elastomeric diaphragm acts as a separation membrane between the compressed air and liquid balancing the load and removing mechanical stress form the diaphragm. The compressed air moves the diaphragm away from the center block of pump. The opposite diaphragm is pulled in by the shaft connected to the pressurized diaphragm. Diaphragm B is on its suction stoke; air behind the diaphragm has been forced out of the atmosphere through the exhaust port of the pump. The movement of diaphragm B toward the center block of the pump cerates a vacuum within chamber. B Atmospheric pressure forces fluid into the inlet manifold forcing the inset valve ball off its seat. Liquid is free to move past the inlet valve ball and fill the liquid chamber (see shaded area)

Figure 2 (Mid Stroke)

When the pressurized diaphragm, diaphragm A, reaches the limit of its discharge stroke, the air valve redirects pressurized air to the back side of diaphragm B. The pressurized air forces diaphragm B away from the center block while pulling diaphragm A to the center block. Diaphragm B is now on its discharge stroke. Diaphragm B forces the inlet valve ball on its seat due the hydraulic forces developed in the liquid chamber and manifold of the pump. These same hydraulic forces lift the discharge valve ball of its seat, while the opposite discharge valve ball is forced onto its seat, forcing fluid to flow through the pump discharge. The movement of diaphragm A toward the center block of the pump creates the vacuum within the liquid chamber A. Atmospheric pressure forces fluid into the inlet manifold of the pump. The inlet valve ball is forced of its seat allowing the fluid being pumped to fill the liquid chamber.

Figure 3 (Right Stroke)

At completion of the stroke, the air valve again redirects air to the back side of diaphragm A, which starts diaphragm B on its exhausts stroke. As the pump reaches its original starting point, each diaphragm has gone one exhaust and one discharge stroke. This constitutes one complete pumping cycle. The pump may take several cycles to completely prime depending on the conditions of the application. The PRICE diaphragm pump is an air-operated, positive displacement, self-priming pump. These drawings show the flow pattern through the pump upon its initial stroke. It is assumed the pump has on fluid in it prior to its initial stroke.