ERECTA SWITCH® by Compac Engineering
Series 10 · ERECTA SWITCH®

10-204 — Flange Mount Two-Level Switch Set

Two-level flange-mount switch set with receptacle. Fits 1.65"–2.3" holes in non-threaded tanks. Available in Polypropylene, Acetal, and Kynar PVDF. 1-Pack and 10-Pack.

10-204 Flange Mount

Choose Your 10-204 Configuration

The 10-204 is available in three wetted materials and two pack sizes. Polypropylene for water-based and mild chemical service. Acetal for solvents, fuels, and hydrocarbons. Kynar PVDF for aggressive acids, halogens, and ultra-high-purity applications.

1-Pack · Single Unit
10-Pack · Case of 10

Specifications

Common specifications across all 10-204 material variants.

SpecificationValue
MountFlange nut (1.65″–2.3″ dia hole, 0.312″ max wall)
Housing10-700-R2 Receptacle
InstallOutside → In (internal access for bottom flange nut)
Switch Levels2
Switch Element10-782 magnetic reed switch
Contact Rating70 VA, 50W resistive | UL File E70063
NL FormulaNL = LL − 2.20″ (55.9 mm)
BD (min)1.5″ (38.10 mm)
CD (min)3.0″ (76.2 mm)
Nipple Range1–70 in, ordered separately (10-715)
ComplianceRoHS
Frequently Asked Questions

Common Questions About This Product

What is the difference between a float level switch and a liquid level sensor?

A float level switch like the 10-204 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.

What are the typical applications for the 10-204?

The 10-204 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.

What liquid chemistries is the 10-204 compatible with?

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.

Is the 10-204 a point-level or continuous-level device?

The 10-204 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.

What mounting options are available for the 10-204?

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.

How is the actuation level set on the 10-204, and how accurate is it?

Point detection is repeatable and mechanical. The trip height on the 10-204 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.

Need Help Selecting a Configuration?

Our engineering team can verify chemical compatibility and recommend the right mounting option for your application.