Sloan Royal 139 ESS Concealed Hardwired Sensor Water Closet Flushometer (1.28 GPF)

The Sloan ROYAL 139 ESS-1.28-RB-24V is a sensor-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 permex synthetic rubber diaphragm seat.

Precision flush control with CID technology. Water-efficient flushometer for commercial toilets, starting at 1.6 gpf. Durable brass construction resists dezincification.

Options on this configuration: 2"-10-3/4" L Dimension (LDIM); 24V Power (24V). Sloan model number: ROYAL 139 ESS-1.28-RB-24V.

Features

• 1.28 gpf, Rough Brass Finish, Fixture Connection Rear Spud, Single Flush, 2"-10.75" L Dimension, Electrical Override, Hardwired, Sensor-Operated, 24V
• Flush volumes start as low as 1.6 gpf/6.0 Lpf
• Flush accuracy is controlled by CID™ technology, also enhancing water efficiency
• Durability is facilitated with high copper, low zinc brass castings for dezincification resistance
• Non-hold-open handle prevents external water adjustment and saves water
• Adjustable tailpiece
• PERMEX® Synthetic Rubber Diaphragm with Dual Filtered Fixed Bypass
• 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

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?

Hardwired -- no battery to replace, but an electrician must run power to it.

Is this ADA, WaterSense, or ASSE 1037 listed?

Yes -- Sloan lists it as ADA, WaterSense and ASSE-1037.

Specifications

• Type: Flushometer
• Inlet Size: 1"
• Outlet Size: 1-1/2"
• Body Material: Semi-Red Brass
• Diaphragm Material: PERMEX Synthetic Rubber Diaphragm
• Operation: Sensor
• MPN: ROYAL 139 ESS-1.28-RB-24V
• Certifications: ADA, Buy American Act, IAPMO, WaterSense, UL, ASSE-1037
• Fixture Served: Water Closet
• Body Style: Concealed
• Spud Connection: Rear Spud
• Rough-In (in): 37.5"
• L Dimension (in): 2"-10-3/4"
• Volume per Flush (gal): 1.28
• Dual Flush: No
• Finish: Unfinished (Rough Brass)
• Min Operating Pressure (PSI): 15
• Max Operating Pressure (PSI): 80
• Power Source: Hardwired AC
• Power Supply Detail: 24V
• Override Type: Electrical Override
• Sensing Range (in): 22"-42"