In this circumferential piston positive-displacement design, arc-shaped pistons travel in annular-shaped cylinders machined in the pump body. The resulting long sealing path reduces slippage and produces a smooth flow of product without destructive pulses or pressure peaks, and without valves or complex parts. Low-shear pumping action protects product from damage, and the low-slip operation provides excellent flow control and metering/filling capability. Santiary versions meet USDA and 3A sanitary standards.

The ZP1 and ZP2 Series rotary piston positive-displacement pumps are Ampco's newest. They are hydraulically and dimensionally interchangeable with other leading brands, and many common pump upgrades are included as standard. The most significant improvement is a 304 stainless steel gear case, standard on every ZP pump. The stainless gear case and all-stainless hardware provide high resistance to corrosion and compatibility with caustic agents – this eliminates rusting, chipping and peeling, and reduces harassment from plant inspectors!

The ZP1 series has been redesigned for easier maintenance and reduced downtime – click here to learn more about the ZP1+ Series.

Both ZP1 and ZP2 models can be rebuilt with oversized rotors to extend the pump's useful life. We offer several rebuild options – a complete rebuild, with new shafts, gears, bearings and rotors includes a one year factory warranty. Moreover, ZP1 pumps can be remanufactured as ZP1+ pumps.

• Original Alloy 88 material rotors with nongalling appeal to maintain tight tolerances. Optional clearances available.
• Solid 316L stainless steel shafts on small pumps and 17-4PH on larger pumps, providing twice the tensile strength of 316L.
• Stainless steel bearing retainer prevents corrosion and enhances bearing protection.
• Tapered roller bearings to maintain axial forces for equal support in both directions
• Helical Timing Gears for increased load-carrying capacity and reduced noise.
• Separate oil chamber for gears using anti-microbial lube as standard.
• Sightglass oil plug.
• Gear housing designed to mount pump in four positions.
• Sealed cleanout plugs protect and extend bearing life.
• Threaded grease Zirks for easy replacement.
• Offering o-ring and mechanical seals to meet all your changing application needs.
• Pump housing in constructed of 316L stainless steel and machined and polished to conform with 3A standards.
• Cast solid 316L cover.

Performance:

• Capacity Range: 0.1 to 310 gpm (0.02 to 70.4 m³/hr)
• Pressure Range: up to 500 psi / 34 bar
• Temperature Range: -40°F tp +300°F (-40°C to +150°C)
  Note: Hot clearances required for high-temp operation
• Viscosity Range: 1 to 1,000,000 CPS

• Bakery: batters, dough, fats and oils, fruit filling, icing, oils, yeast
• Beverages: alcohol, wines and beer, wort, fruit concentrate, fruit juices, mash, soft drinks
• Candy: chocolate, cocoa butter, corn syrup, gelatin, sugars
• Canned Foods: baby food, jams, jellies, mayonnaise, potato salad, pudding, relish, stews
• Cosmetics: creams, emulsions, jellies, lotions, shampoo, toothpaste
• Dairy: butter, cream, curds, ice cream, margarine, milk, soft cheese, yogurt
• Dressings: mayonnaise, many other sauces
• Flavorings: concentrates, syrups
• Industrial: auto paint, inks, latex, polymers
• Meats: broth, fats, gelatin, pet foods, sausage fillings