Master manufacturing diaphragm sprayer pump sprayer pump is approved for use with round-up and other agricultural brand herbicides. Polypropylene housing and valve plate for longevity and chemical resistance. Viton valves - santoprene diaphragm for increased durability and efficiency. Honeywell micro switch. Zinc plated steel fasteners to resist corrosion. Inline fuse protection. Automatic shut off when no flow is required to conserve battery life. Glyphosate compatible. Discharge - quick attach with adapters. Standard mounting pattern to fit most tanks. Ce approved.