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The SC JOHNSON PROFESSIONAL 684498 is a hose quick disconnect proportioner designed for accurate chemical dilution in professional cleaning and sanitation applications. The body is constructed from bronze for durability in demanding service environments. A metering screw adjustment allows the technician to dial in the correct dilution ratio for the chemical being dispensed. The unit ships with a complete hose connection set that includes an on/off valve and a pressure bleeder, providing the basic hardware needed for a functional installation out of the box.
This proportioner is suited for commercial and institutional settings where liquid cleaning concentrates must be diluted at the point of use. Typical applications include janitorial supply stations, food service facilities, laundry rooms, and industrial cleaning setups. The hose inlet and pipe outlet connections make it compatible with standard supply line configurations found in these environments. Service and chemical supply professionals handle the installation and commissioning of this type of equipment.
Designed as an OEM-style replacement or direct-install proportioner for commercial chemical dispensing systems that use hose inlet and pipe outlet connections with metering screw dilution control.
Installation should be performed by a qualified plumbing or chemical dispensing technician familiar with local plumbing codes. Shut off the water supply and relieve line pressure before connecting or disconnecting the unit. Use the included pressure bleeder to safely depressurize the line prior to service. Verify that all thread connections are properly sealed with appropriate tape or compound rated for chemical service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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