Hollow magnetic float for Series 20 ERECTA SWITCH assemblies. 2.06" diameter, 20 PSI max. Replacement and OEM float. Polypropylene handles water, water-based coolants, soaps, detergents, and dilute acid/alkaline solutions.
| Quantity | Price |
|---|---|
| 1–9 | $26.05 |
| 10–24 | $23.61 |
| 25–199 | $19.64 |
| 200+ | $13.02 |
| 1000+ | $12.38 |
The 20-720-PP is a hollow magnetic float in polypropylene (gray and black) for Series 20 assemblies. Minimum SG 0.80. At SG 1.0: 1.0" exposed, 1.05" submerged — highest buoyancy of the three material options.
| Specification | Value |
|---|---|
| Float Type | Hollow Magnetic |
| Diameter Max | 2.06 in (52.35 mm) |
| Height | 2.05 in (52.07 mm) |
| Bore Min | 0.87 in (22.09 mm) |
| Pressure | 20 PSI MAX @ 20°C; derate to zero @ 90°C |
| Temperature Max | 90°C |
| Compliance | RoHS |
| Material | Polypropylene |
A float level switch like the 20-720 is a point-level device: a float rides the liquid and actuates a magnetic reed switch at a set height, giving a simple on/off signal — no power, no firmware, no calibration. "Sensors" usually means continuous measurement (ultrasonic, radar, capacitive). ERECTA SWITCH targets reliable discrete-point control.
The 20-720 is used for pump start/stop control, high-level overflow protection, low-level dry-run protection, and tank or reservoir level alarms in OEM equipment. The modular ERECTA SWITCH system is built into laundry, HVAC, water-treatment, hydraulic, and chemical-handling machinery.
Choose the material to match the media: Polypropylene (PP) for general aqueous, acids, and bases; Acetal (AC/Delrin) for solvents, fuels, and hydrocarbons; Kynar PVDF (KR) for aggressive or harsh chemicals. Every ERECTA SWITCH model is offered in all three materials.
The 20-720 is point-level — it provides a discrete on/off signal at a set height. For multiple switch points, use a multi-level extended-stem set (2-, 3-, or 4-level) instead of a single continuous sensor.
ERECTA SWITCH offers vertical top-mount, bulkhead, and extended-stem configurations, plus side-mounted single-point models. The mount style is part of the model number — select the configuration that matches your tank geometry.
Point detection is repeatable and mechanical. The trip height on the 20-720 is set by the 10-715 Precision Nipple, ordered separately in 1-inch increments (1″–70″), so you place the switch point exactly where the application needs it.
Our engineering team can verify compatibility with your application and chemistry before you order.