Series 11 · ERECTA SWITCH®
11-803-KR — 2" NPT Adapter — Kynar PVDF 10-Pack
2" NPT with adapter for extended stem temperature sensing Kynar PVDF throughout for aggressive acids, halogens, and high-purity semiconductor service.
2" NPT with adapter for extended stem temperature sensing Kynar PVDF throughout for aggressive acids, halogens, and high-purity semiconductor service.
Contact us for 10-Pack pricing.
The 11-803 uses a 2″ NPT adapter and receptacle to position the 11-800 temperature switch at precise sensing depth. Installed outside-to-inside with no internal access required.
| Specification | Value |
|---|---|
| Switch Type | SPST Bimetallic Creep-Action |
| Electrical Rating | 6A · 120V AC · Resistive |
| Reactive Load | 5A · 120V AC Inductive |
| DC Rating | 2A Max · 240VDC Resistive |
| Mounting | 2″ NPT · 10-700-AS Adapter · 10-700-R1 Receptacle |
| Dimensions | NL = LL − 2.78″ (47.24 + 23.36mm) · Nipple 1″–70″ |
| Temperature Range | 0–100°C · 16 preset setpoints |
| Accuracy | ±5°C typical |
| Response Type | Creep-action · slow response |
| Medium | Gas or liquid |
| Pressure Max | 50 PSI @ 20°C |
| Material | Kynar PVDF |
| Certification | RoHS Compliant · UL component recognized |
| Code | Set Point | Contact Action | Type |
|---|---|---|---|
| A | 0–5°C | Opens on rising temperature | C (Normally Closed) |
| B | 40°C | Opens on rising temperature | C (Normally Closed) |
| C | 50°C | Opens on rising temperature | C (Normally Closed) |
| D | 60°C | Opens on rising temperature | C (Normally Closed) |
| E | 70°C | Opens on rising temperature | C (Normally Closed) |
| F | 80°C | Opens on rising temperature | C (Normally Closed) |
| G | 90°C | Opens on rising temperature | C (Normally Closed) |
| H | 100°C | Opens on rising temperature | C (Normally Closed) |
| I | 0–5°C | Closes on rising temperature | CR (Normally Open) |
| J | 40°C | Closes on rising temperature | CR (Normally Open) |
| K | 50°C | Closes on rising temperature | CR (Normally Open) |
| L | 60°C | Closes on rising temperature | CR (Normally Open) |
| M | 70°C | Closes on rising temperature | CR (Normally Open) |
| N | 80°C | Closes on rising temperature | CR (Normally Open) |
| O | 90°C | Closes on rising temperature | CR (Normally Open) |
| P | 100°C | Closes on rising temperature | CR (Normally Open) |
The 11-803-KR 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 11-803-KR uses a magnetic reed switch wired in series with your relay or controller. Contact rating is 70 VA / 50 W resistive (UL File E70063). The switch ships with lead wires — connect directly to your control circuit.
No. The 11-803-KR is a mechanical float actuating a sealed reed switch — there is nothing to calibrate or power. This is a reliability advantage over electronic sensors that can drift over time.
Inspect that the float moves freely (check for debris or scaling), then test reed continuity with a multimeter. Because ERECTA SWITCH is modular, you replace only the individual component — switch, float, connector, or fitting — instead of the whole assembly.
Series 10 level switches are rated to 100 PSI; Series 5 flow switches to 200 PSI. Operating temperature depends on the housing material — Polypropylene, Acetal, and Kynar PVDF each have different thermal limits. Contact Compac engineering for your specific conditions.
Our engineering team can help verify setpoint selection and chemical compatibility for your application.