Sloan 8603-ESM-HW-1.28 Concealed Solenoid Flushometer, 1.28 gpf, Rear Spud, Program A4, A04 2ACT 5M 60MLO

The Sloan 8603-ESM-HW-1.28-RB-PRGM-A4-MBFW is a solenoid-operated diaphragm-type flush valve for a water closet. It delivers 1.28 gallons per flush, with a rear spud connection at a concealed body. It features a semi-red brass body and a high-chloramine-resistant permex diaphragm seat.

Options on this configuration: Metal Button Fixture Wall Actuator (MBFW); PWT Program A4 (PRGM-A4); A04; 2ACT; 5M; 60MLO. Sloan model number: 8603-ESM-HW-1.28-RB-PRGM-A4-MBFW. Sloan's own price-list description: 8603-1.28 ESM-HW A04 2act 5m 60mLO.

Features

• 1.28 gpf, A4, Rough Brass Finish, Fixture Connection Rear Spud, Single Flush, Battery with Hardwired Option, Metal Button Fixture Wall Actuator Push Button, Piezo
• Sloan® Prison Flushometers feature all the performance benefits of standard concealed, diaphragm model Flushometers with added durability to withstand rough environments
• Various flush volumes available to match with existing fixtures and meet water-efficiency goals
• Choose from Flushometers intended for use with stainless-steel water closet fixtures from Acorn®, Bradley®, Metcraft® and other manufacturers
• PERMEX® Synthetic Rubber Diaphragm with Dual Filtered Fixed Bypass
• Vandal-proof, push-button operation designed with non-hold-open feature to keep fixture from surpassing intended water consumption
• Adjustable tailpiece accommodates various installation heights
• High chloramine resistant PERMEX® Synthetic Rubber Diaphragm with Linear Filtered Bypass and Vortex Cleansing Action
• Valve body, Cover, Tailpiece and Control Stop shall be in compliance with ASTM Alloy Classification for Semi-Red Brass
• Valve shall be in compliance to the applicable sections of ASSE 1037
• Hardwire with battery backup
• Programmable for 2 activation in 5 minutes, lockout time options, dorm option, custom programs available

Common Questions

What fixture and flush volume is this valve for?

Per Sloan's own spec, it serves a water closet, 1.28 gallons per flush, a rear spud connection.

Is this exposed or concealed, and does it need a wall box?

Concealed -- the body sits behind the wall, with only the cover or trim visible.

How is it powered, and what happens in a power outage?

Battery-powered by default, with an optional hardwired backup.

Is this ADA, WaterSense, or ASSE 1037 listed?

Yes -- Sloan lists it as ASSE-1037.

Specifications

• Type: Flushometer
• Outlet Size: 1-1/2"
• Body Material: Semi-Red Brass
• Diaphragm Material: High-Chloramine-Resistant PERMEX Diaphragm
• Operation: Solenoid
• MPN: 8603-ESM-HW-1.28-RB-PRGM-A4-MBFW
• Certifications: Buy American Act, BABA, ASSE-1037
• Fixture Served: Water Closet
• Body Style: Concealed
• Spud Connection: Rear Spud
• Volume per Flush (gal): 1.28
• Dual Flush: No
• Finish: Unfinished (Rough Brass)
• Vandal Resistant: Yes
• Min Operating Pressure (PSI): 15
• Max Operating Pressure (PSI): 80
• Power Source: Battery with Hardwired Option