Pentair 8020-503-250 Diaphragm Spray Pump 1/10 Hp

Product Description

The PENTAIR 8020-503-250 is a bypass-style diaphragm spray pump designed for chemical metering and spray applications in pool, irrigation, and water treatment systems. Rated at 1/10 HP and powered by 115-volt AC current, it delivers a maximum flow rate of 1.40 GPM through 3/8-inch inlet and outlet ports. The pump body is constructed from polypropylene, offering resistance to the corrosive chemical environments common in pool service and chemical feed installations. Licensed pool service technicians and water treatment professionals are the primary installers of this unit.

This diaphragm pump is suited for low-flow chemical injection and spray duties in residential and light commercial settings. The bypass design allows for pressure relief without shutting down the pump, making it practical for spray systems where line pressure can fluctuate. The 3/8-inch port sizing fits standard chemical feed tubing commonly used in pool chlorination and pH adjustment systems. Its compact form factor and polypropylene construction make it a reliable choice for chemical-resistant pump applications where flow precision and durability matter.

Key Features

• Bypass diaphragm design provides built-in pressure relief for spray and metering systems
• 1/10 HP motor rated for 115-volt AC operation
• Maximum flow rate of 1.40 GPM for controlled low-flow chemical delivery
• 3/8-inch inlet and 3/8-inch outlet ports match standard chemical feed tubing
• Polypropylene construction resists corrosion from pool chemicals and treatment solutions

Compatibility

Designed as an OEM-style replacement diaphragm spray pump for chemical feed and spray systems requiring a 1/10 HP, 115-volt AC pump with 3/8-inch porting and bypass capability.

Installation Notes

Installation should be performed by a licensed pool service professional or qualified plumbing technician familiar with chemical feed systems. Disconnect power and shut off the chemical supply line before removing the existing pump or making any connections. Verify that tubing and fittings are rated for the specific chemicals being handled before completing the installation. Follow all applicable local codes and chemical handling safety requirements when servicing chemical metering equipment.