Liquid Metering Pump - Volumetric Metering for Liquids & Pastes

Keypack Intelligent Liquid Metering Pump - Volumetric Metering for Liquids & Pastes

Keypack Intelligent Liquid Metering Pump is a pneumatic-driven volumetric metering system designed for precise liquid and paste dispensing operations. It delivers 20-40 fills per minute with 2-50ml volumetric accuracy using SS304 stainless steel construction and pneumatic gear pump technology. Ideal for liquid filling, paste metering, sauce dispensing, viscous fluid handling, and corrosive liquid transfer across food processing, pharmaceutical packaging, and chemical manufacturing lines.

Specifications

Product Overview

This liquid metering pump utilizes advanced pneumatic gear pump technology to achieve precise volumetric metering for a wide range of liquid and paste products. The system operates through compressed air entering the cylinder to drive the piston, which in turn rotates the drive gear. The meshing action between the drive gear and driven gear creates controlled volumetric changes within the pump chamber, enabling accurate suction and discharge of liquids for consistent metered transfer.

The pump's structural design comprises three primary components: a pneumatic motor that provides reliable motive power, a precision pump head responsible for liquid suction and discharge operations, and a control valve system that regulates compressed air intake and exhaust to control pump operation. This integrated design ensures smooth, consistent fluid transfer while maintaining volumetric accuracy across varying product viscosities.

Manufactured by Keypack Intelligent (Kunbupack), this liquid metering pump represents a versatile solution for businesses requiring precise fluid dispensing with explosion-proof safety. The SS304 stainless steel construction ensures compatibility with food-grade applications, corrosive chemicals, and pharmaceutical products, while the simple mechanical design facilitates easy maintenance and long-term reliability in demanding production environments.

The pneumatic operation provides inherent explosion-proof performance, making this metering pump particularly suitable for flammable and explosive environments where electric motors pose safety risks. The air-driven design eliminates electrical sparks and heat generation, supporting safe operation with volatile solvents, alcohol-based products, and other hazardous liquids in chemical processing and pharmaceutical manufacturing facilities.

With a 15-liter hopper capacity and filling speeds of 20-40 fills per minute, the pump balances productivity with precision for small to medium-scale production operations. The 2-50ml volumetric range accommodates diverse packaging formats from sample vials to retail bottles, while the adjustable metering capability enables rapid product changeovers without extensive recalibration.

Key Features and Machine Characteristics

• Pneumatic Gear Pump Technology: Compressed air-driven gear pump mechanism delivers precise volumetric metering through controlled chamber displacement, ensuring consistent fill volumes regardless of product viscosity variations. The positive displacement design maintains accuracy for both thin liquids and thick pastes, eliminating the inconsistencies common with gravity-fed or peristaltic pump systems.
• Explosion-Proof Pneumatic Operation: Air-powered design provides inherent explosion-proof performance without electrical components, making it safe for flammable and explosive environments. This pneumatic operation eliminates spark risks and heat generation, supporting compliant operation with volatile solvents, alcohol-based products, and hazardous chemicals in regulated facilities.
• SS304 Stainless Steel Construction: Complete product-contact surfaces fabricated from SS304 food-grade stainless steel ensure corrosion resistance, chemical compatibility, and compliance with food safety standards. The non-reactive stainless steel construction supports applications ranging from acidic sauces to alkaline cleaning chemicals without material degradation or product contamination.
• Wide Viscosity Range Capability: Handles products from low-viscosity liquids to high-viscosity pastes and sauces, providing operational flexibility for diverse product portfolios. The gear pump design maintains volumetric accuracy across viscosity ranges that would challenge other metering technologies, supporting applications from water-thin solutions to thick creams and gels.
• Adjustable Volumetric Metering (2-50ml): Flexible fill volume adjustment from 2ml to 50ml accommodates multiple package sizes and product formats without mechanical modifications. This wide metering range supports applications from pharmaceutical sample vials to food service condiment bottles, enabling multi-product operations on a single filling line.
• Simple Structure and Easy Maintenance: Straightforward mechanical design with minimal moving parts reduces maintenance requirements and simplifies troubleshooting. The accessible pump head design allows rapid disassembly for cleaning and seal replacement, minimizing downtime and supporting frequent product changeovers in multi-product facilities.
• High Reliability and Durability: Robust pneumatic motor and precision-machined gear pump components deliver consistent performance in continuous production environments. The air-driven operation eliminates motor burnout risks and electrical failures, providing reliable service life with minimal wear on critical components.
• Corrosive Liquid Compatibility: Chemical-resistant materials and sealed pump chamber design enable safe handling of corrosive acids, bases, and aggressive solvents. This corrosion resistance expands application possibilities to include industrial chemicals, cleaning solutions, and specialty formulations that would damage conventional filling equipment.
• Controlled Air Regulation System: Precision control valve regulates compressed air intake and exhaust for smooth pump operation and accurate cycle timing. The adjustable air pressure control allows fine-tuning of fill speed and volume to optimize performance for specific product characteristics and container types.
• Compact 65kg Design: Lightweight construction and compact footprint enable flexible installation in space-constrained production areas. The portable design supports mobile filling operations and facilitates equipment relocation for seasonal products or contract packaging applications.

Application Areas

Food Processing and Condiment Packaging:

• Sauces: tomato sauce, soy sauce, hot sauce, barbecue sauce volumetric filling for retail bottles and food service containers
• Condiments: ketchup, mustard, mayonnaise, salad dressing precise metering for squeeze bottles and portion packets
• Syrups: chocolate syrup, fruit syrup, pancake syrup, flavoring syrups dispensing for retail packaging
• Honey and jams: liquid honey, fruit preserves, marmalade, jelly volumetric filling for jars and squeeze bottles
• Cooking oils: vegetable oil, olive oil, sesame oil, specialty oils metering for retail bottles and food service containers
• Liquid seasonings: fish sauce, oyster sauce, teriyaki sauce, marinade precise dispensing for Asian food packaging
• Dairy products: liquid cream, condensed milk, yogurt drinks volumetric filling for dairy packaging

Pharmaceutical and Healthcare Products:

• Liquid medications: cough syrup, oral suspensions, liquid vitamins precise metering for pharmaceutical bottles
• Topical solutions: antiseptic solutions, wound care liquids, medicated lotions volumetric dispensing for medical packaging
• Tinctures and extracts: herbal tinctures, botanical extracts, essential oil blends accurate filling for dropper bottles
• Oral care products: mouthwash, oral rinse solutions, fluoride treatments metering for dental product packaging
• Nutritional supplements: liquid vitamins, mineral supplements, protein shots volumetric filling for health product bottles

Cosmetics and Personal Care:

• Lotions and creams: body lotion, hand cream, facial moisturizer, sunscreen precise metering for cosmetic bottles and tubes
• Liquid soaps: hand soap, body wash, shampoo, shower gel volumetric dispensing for personal care packaging
• Hair care products: hair conditioner, hair oil, styling gel, leave-in treatment filling for beauty product containers
• Perfumes and fragrances: eau de toilette, cologne, body mist, fragrance oils accurate metering for perfume bottles
• Skincare serums: facial serum, anti-aging treatments, vitamin C serum precise dispensing for dropper bottles

Chemical and Industrial Applications:

• Cleaning chemicals: liquid detergent, disinfectant, sanitizer, degreaser volumetric filling for industrial chemical containers
• Solvents: alcohol, acetone, mineral spirits, paint thinner metering for hazardous liquid packaging in explosion-proof environments
• Adhesives: liquid glue, epoxy resin, cyanoacrylate, contact cement precise dispensing for adhesive bottles and cartridges
• Lubricants: machine oil, cutting fluid, hydraulic oil, gear lubricant volumetric filling for industrial lubricant containers
• Inks and dyes: printing ink, textile dye, food coloring, industrial colorants accurate metering for ink bottles and dye containers
• Corrosive acids and bases: hydrochloric acid, sulfuric acid, sodium hydroxide, ammonia solution safe handling and filling for chemical packaging

Beverage and Liquid Food Products:

• Concentrated beverages: juice concentrate, coffee concentrate, tea concentrate volumetric filling for beverage packaging
• Flavor extracts: vanilla extract, almond extract, fruit flavoring, coffee flavoring precise metering for baking supply bottles
• Liquid sweeteners: agave syrup, maple syrup, corn syrup, liquid stevia dispensing for sweetener bottles
• Nutritional drinks: protein shakes, meal replacement drinks, energy shots volumetric filling for sports nutrition packaging

Agricultural and Veterinary Products:

• Liquid fertilizers: plant nutrients, hydroponic solutions, foliar sprays volumetric metering for agricultural chemical containers
• Pesticides and herbicides: liquid insecticides, weed killers, fungicides precise filling for agricultural chemical packaging
• Veterinary medicines: liquid antibiotics, dewormers, vitamin supplements accurate dispensing for animal health products
• Pet care products: flea and tick treatments, ear cleaners, dental solutions metering for pet care bottles

Material and Environmental Considerations:

• Suitable for: low to high viscosity liquids, pastes, sauces, creams, gels, and semi-solid products
• Viscosity range: handles products from water-thin liquids to thick pastes and sauces
• Fill volume: 2-50ml range suitable for sample vials, retail bottles, and portion packets
• Chemical compatibility: SS304 stainless steel suitable for food products, pharmaceuticals, cosmetics, and most industrial chemicals
• Corrosive liquid capability: handles acidic and alkaline solutions, solvents, and aggressive chemicals
• Explosion-proof environments: pneumatic operation safe for flammable and volatile products
• Temperature range: operates with ambient temperature products; consult for hot-fill applications
• Not suitable for: products with large particulates that may clog pump gears, extremely abrasive slurries, or materials requiring hermetic sealing during transfer