Pentair 8000-543-250 Diaphragm Spray Pump 0.10 Hp

Product Description

The PENTAIR 8000-543-250 is a diaphragm spray pump designed for low-flow liquid transfer and spray applications in mobile and 12-volt DC systems. Rated at 0.10 HP and a maximum flow rate of 1.40 GPM, it operates on 12-volt DC input, making it well suited for battery-powered or vehicle-mounted spray rigs. The pump body is constructed from polypropylene, which resists corrosion and chemical attack common in spray chemical environments. Both the inlet and outlet are 3/8 inch, and the unit features a built-in bypass valve that protects the pump when the spray circuit is closed or deadheaded. At 5 pounds, it is compact enough for tight mounting locations on trucks, trailers, or portable spray units.

This pump is used in agricultural spot spraying, turf and pest control spray systems, marine wash-down setups, and other low-voltage DC spray applications where a self-priming, bypass-protected diaphragm pump is required. It is installed by irrigation technicians, pest control equipment mechanics, and field service technicians who work with 12-volt spray systems. The 3/8 inch port sizing fits standard spray hose and barb fittings commonly used in light-duty sprayer plumbing.

Key Features

• Built-in bypass valve protects pump during deadhead conditions and closed-circuit operation
• 12-volt DC operation compatible with vehicle electrical systems and battery-powered spray rigs
• Polypropylene construction resists chemical corrosion from fertilizers, herbicides, and pest control solutions
• 3/8 inch inlet and outlet ports fit standard spray system barb fittings and hose assemblies
• Maximum flow rate of 1.40 GPM suited for low-volume spot spray applications
• Compact 5-pound package allows mounting in confined equipment bays or trailer boxes

Compatibility

Designed as an OEM-style replacement or direct-install diaphragm spray pump for 12-volt DC spray systems using 3/8 inch plumbing connections and requiring bypass protection.

Installation Notes

Installation should be performed by a qualified technician familiar with 12-volt DC wiring and low-pressure spray plumbing. Disconnect the power source before mounting or servicing the pump. Secure all hose connections at the 3/8 inch ports before energizing to prevent pressurized leaks. Verify polarity on the DC leads before final connection, as reverse polarity can damage diaphragm pump motors.