Weil W-8311 High Water Alarm – Compression Type, 115V, NEMA 4 Enclosure, 95dB Horn with Isolated Contacts

Condition: New – No visible signs of wear or installation; appears unused and factory-sealed internally.

The Weil W-8311 High Water Alarm (Compression Type) is a robust and reliable monitoring device designed to alert users of high water levels in sump pits, sewage lift stations, basins, or other contained fluid systems. Built to industrial-grade standards, it is housed in a NEMA Type 4 weather-resistant enclosure, making it ideal for both indoor and outdoor applications. This unit operates on 115V single-phase power at 60Hz, and features a 95dB horn for loud audio alerts, as well as isolated contacts for integration into broader alarm or monitoring systems.

The compression-type sensor mechanism is specifically engineered to detect fluid level rise with high reliability. It is ideal for applications where mechanical float switches might be impractical due to turbulence or solids in the water. With a cover-mount configuration and 5-foot pipe clamp, installation is straightforward in most typical pit or tank environments.

Features

• Voltage: 115V AC
• Frequency: 60Hz
• Phase: Single-phase
• Enclosure Type: NEMA 4 (Watertight / Weather-resistant)
• Alarm Output: 95dB horn – high volume for clear alerts
• Isolated Dry Contacts: Enables remote monitoring or relay logic
• Mounting Type: Cover mount with clamp and 5 ft pipe
• Compression Sensor: Reliable operation in high-solids or turbulent environments
• Label Info: S.O. Number 513.848 E13
• Manufacturer: WEIL (Cedarburg, WI)

Applications

• Sewage and sump pump basins
• Water tanks and containment systems
• Wastewater treatment and lift stations
• Stormwater overflow basins
• Commercial and residential flooding prevention
• Industrial process fluid containment
• Agriculture and irrigation systems

Cross-Referenced Models

This unit can replace or be cross-referenced with high water alarms of similar specs from other manufacturers, such as:

• Zoeller 10-0623 (115V, NEMA 4X, 86dB)
• SJE Rhombus 1011423 (Single phase, 95dB, outdoor rated)
• Liberty ALM-2 (Indoor/outdoor alarm, 115V, 86dB, with float switch)
• Sepco HWA-01 (NEMA 4X, compression type high water alarm)

Comparable Products

• Zoeller 10-1494 NEMA 4X High Water Alarm (86 dB, 115V, float included)
• SJE Rhombus Tank Alert® AB Alarm Panel (Indoor/Outdoor, 95 dB horn, light, 115V)
• Liberty Pumps ALM-P1 (Pump alarm system, 115V, with visual/audible alert)
• Pumpspy PSO1000 (Smart sump alarm with WiFi, 120V, indoor use)

System Integration

This alarm is typically used with sump or effluent pump systems, especially in critical applications requiring redundancy or remote alerting. It can be integrated into:

• Weil sump or sewage pump systems
• Custom control panels
• Building automation systems (using isolated dry contacts)
• SCADA or BMS platforms (when additional remote relays or indicators are required)

The compression sensor can be mounted to vertical discharge or vent pipes via the provided 5-ft pipe clamp, allowing it to be positioned precisely at the critical high-water level.

Related

• High water level alarm box
• Sump pump alarm with horn
• 115V compression-type water alarm
• Water level detection box NEMA 4
• Pump basin overflow alert system
• Control box for water detection
• Waterproof tank alarm unit
• Dry contact water level alert
• Electrical panel for sump alert
• Sump high water sensor alarm enclosure

Common Requests:

1. “High water alarm with 95 dB horn for outdoor sump pit”
2. “Compression-type sump pump alarm 115V NEMA 4”
3. “Weil W-8311 high water level warning box replacement”
4. “Sewage pump basin alarm with dry contacts and loud horn”
5. “Weatherproof high water alarm with 5 ft sensor pipe”

P126; B009; GT00131