The GRACO A28316 is a variable speed, simplex chemical injection pump designed for precise, continuous injection of chemicals in industrial applications. It features a 24 VDC, 1/5 HP (150 Watt) brushless motor, a 1/4 inch plunger, and HNBR (Hydrogenated Nitrile Butadiene Rubber) seals for chemical resistance. This pump is intended for use in hazardous locations and is engineered for reliable, accurate chemical dosing within GRACO equipment.

Key Features:

• Simplex chemical injection pump
• A28316, 1/4 inch plunger
• Robust construction with HNBR seals and 316 SST wetted parts (where applicable)
• Maximum working pressure: 6,000 psi (41.3 MPa, 413 bar) for 1/4 inch plunger
• Compatible with aggressive chemicals due to HNBR, FKM, FKM-ETP, and FFKM plunger packings and check valve seals
• Class I, Division 2, Groups A, B, C, D (Hazardous Location rated)
• Variable speed control for precise injection rates
• High efficiency brushless DC motor for reduced power consumption
• Precision stroke adjustment (1/4 in to 1 in, 6.4 mm to 25.4 mm)
• Easy seal replacement (less than 10 minutes)
• Continuous injection for even chemical dispersion
• Interchangeable fluid heads with other Wolverine Advanced series pumps

Applications:
Used for continuous, accurate injection of chemicals in oilfield, mining, water treatment, and industrial processes, especially in hazardous environments requiring reliable and safe operation.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and maintains safety certifications for hazardous locations.
• Ensure proper electrical connections for 24 VDC operation
• Verify chemical compatibility with HNBR and other available seal materials
• Follow all local and national electrical and safety codes for hazardous locations
• Regularly inspect and replace seals as needed for optimal performance
• Consult the manual for specific installation and maintenance procedures
• Perform routine maintenance checks on seals and wetted parts
• Use only recommended replacement parts and lubricants
• Keep installation area clean and free from debris
• Monitor pump performance and adjust stroke length as required for desired injection rate