Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
September 08, 2026 2 min read
Specification sheet for the WaterCop Leak Stop+ single-point leak detection and automatic shut-off system.
Specification sheet for the WaterCop® Leak Stop+ single-point leak detection and automatic shut-off system — designed to help stop extensive water damage from plumbing leaks.
Leak Stop+ detects plumbing leaks at a single location, sounds an audible alarm, and automatically shuts off the water supply. An RJ45 jack allows integration with SmartConnect for mobile alerts to a smartphone or tablet, and with home security or automation systems for notifications when the shut-off has activated. Leak Stop+ is ideal for water heaters, recirculation pumps, and softeners, which become particularly vulnerable to leaks as they age.
Note: Leak Stop+ does not operate with other WaterCop® wireless sensors.
Designed for plumbing supply line installation, upstream of the appliance or area you wish to monitor — most commonly a water heater. Place the two sensor probes in the area where water would first accumulate if a leak occurs.
| Spec | Detail |
|---|---|
| Max Working Pressure | 125 PSIG |
| Ambient Temperature | 35° to 105°F |
| Voltage (Leak Stop) | 12 VDC, 1 phase (includes 115V wall transformer and 20' cord) |
| Valve | NSF/ANSI 372* approved, lead-free, full port brass |
| Installation | Building/plumbing codes in some areas may require a licensed plumber |
* Lead Free NSF/ANSI 372 refers to the wetted surface of pipe, fitting, and fixtures in potable water systems with a weighted average lead content ≤ 0.25%. Source: California Health & Safety Code (116875); Vermont Act 193.
| Size (FNPT) | Leak Stop+ Part No. |
|---|---|
| ½" | WCLSLFB ½ |
| ¾" | WCLSLFB ¾ |
| 1" | WCLSLFB 1 |
| 1 ¼" | WCLSLFB 1 ¼ |
All sizes are lead-free NSF/ANSI 372. Made in the USA.
WaterCop®
watercop.com · 800-545-3636
Sign up to get the latest on sales, new releases and more …