The GRACO A23157 G-Chem Pump is a chemical injection pump designed for reliable, low-cost operation in demanding environments. It features an HNBR (Hydrogenated Nitrile) seal, a 1/4 inch plunger, operates on 12 VDC, and is rated at 1/6 HP. The 'Duplex' configuration indicates it is a dual-pump setup, ideal for applications requiring redundancy or simultaneous injection of two chemicals. The pump is constructed with robust materials for chemical compatibility and durability, making it suitable for a wide range of industrial chemical injection tasks.

Key Features:

• Chemical Injection Pump
• G-Chem, 1/4 in Plunger, Duplex
• Chromex™ coated plunger, stainless steel (SST) fluid section/wetted parts, HNBR seal
• Designed for chemical injection applications; compatible with a wide range of chemicals as per wetted parts material compatibility
• Easy access to pump plunger and packings
• Plunger packings can be replaced in 10 minutes or less
• Three defined stroke adjustment positions
• Adjustable fluid packing for longer seal life
• Proprietary poppet style check valve to prevent sticking
• Same high-quality drive train as other GRACO chemical injection pumps
• Can be combined with accessories for solar-operated systems
• Harrier EZ Timer: preset low voltage disconnect, voltage display, prime mode, built-in on/off switch

Applications:
Ideal for chemical injection in industrial, mining, agricultural, and oilfield applications where reliable, low-maintenance, and cost-effective chemical dosing is required.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and longevity of the equipment.
• Follow all electrical and fluid connection guidelines as specified in the manual
• Ensure compatibility of chemicals with wetted parts
• Regularly inspect and maintain seals and packings for optimal performance
• Use only recommended accessories and replacement parts
• Consult the equipment manual for detailed installation and maintenance procedures
• Perform routine checks on pump operation and timer settings
• Replace seals and packings as needed to prevent leaks and ensure reliability