3/4 NPT adjustable differential adapter for 15-650 side-mount switches. Extends switch position for field-adjustable deadband. O-ring seal. Cross-series compatible. Acetal construction handles petroleum fuels, hydraulic oils, hydrocarbons, and solvents beyond polypropylene's range.



| Quantity | Unit Price |
|---|---|
| 1–9 | $4.36 |
| 10–24 | $4.21 |
| 25–49 | $4.00 |
| 50–99 | $3.42 |
| 100–199 | $2.88 |
| 200–999 | $2.66 |
The 15-600-AD-AC is the 3/4 NPT adjustable differential adapter in acetal — for petroleum fuel, hydraulic oil, and hydrocarbon service. Same 3/4 NPT male / 1/2 NPS female construction with O-ring seal. Also sold as 10-600-AD-AC and 20-600-AD-AC.
| Specification | Value |
|---|---|
| Series | 15-600-AD |
| Male Thread | 3/4 NPT |
| Female Thread | 1/2 NPS (accepts 15-650 switch) |
| Seal | O-ring at switch interface |
| Adapter Length | 0.75 in (19.05 mm) |
| Cross-Series | 10-600-AD / 20-600-AD (same part) |
| Compliance | RoHS |
| Material | Acetal |
A float level switch like the 15-600-AD-AC 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 15-600-AD-AC 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 15-600-AD-AC 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 15-600-AD-AC 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.