Detergent Injection Systems

Series 4000

The Armstrong Series 4000 detergent injection system combines an all-polymer pneumatic pump with a Teflon internal operating diaphragm and 1/4" (6 mm) connections. Each unit comes supplied with an in-line air filter, pressure gauge and needle valves to regulate air and chemical flow. It is all preassembled, piped and pressure-tested.

The pump assembly is first mounted on a stainless steel 11-1/2" x 13-1/2" (292 x 343 mm) wall plate with a 5-1/4" (133 mm) shelf. It is then secured within a NEMA 4X-rated fiberglass enclosure with stainless steel latches and padlock hasps. The 12" x 14" x 8" (304 x 355 x 203 mm) enclosure has a shatter-proof 10" x 12" (254 x 304 mm) Lexan window.

The complete assembly includes 1/4" (6 mm) air and chemical inlets and 1/4" (6 mm) outlet fittings, a detergent supply hose with strainer, an outlet ball valve for flow control and two check valves to eliminate potential for cross connection. (An in-line vacuum breaker is also available for installation where local code stipulates.)

The Armstrong Series 4000 is recommended for use with existing washdown stations or as an accessory item to Armstrong Models 1033-25/50, 2033-25/50 and 3033-25/50.

The durable, low-maintenance PVDF and Teflon pump unit is designed for liquid chemical flows to 1.5 gpm (5.7 lpm) and is suitable for inlet air pressure up to 125 psi (8.6 bar). The pump unit is designed to shut itself off in a no-flow condition and then reactivates upon flow demand, thereby giving “remote” operation at the end of the primary washdown hose by using a self-closing trigger spray nozzle.

The Series 4000 system comes fully assembled and pressure-tested, with the following standard components:

• 1/4" (6 mm) air line connection
• 1/4" (6 mm) PVDF/Teflon pneumatic pump
• 1 needle valve
• Detergent supply hose with intake/foot strainer
• Two check valves and outlet ball valve
• Air filter with pressure gauge
• Durable fiberglass housing with Lexan window