Ultra-low flow detection set. Spring in: 0.042 GPM. Spring removed + vertical mount: 0.008 GPM. Angle body with low-flow trim. Polypropylene handles water, water-based coolants, soaps, detergents, and dilute acid/alkaline solutions.
| Quantity | Price |
|---|---|
| 1–9 | $81.33 |
| 10–24 | $74.66 |
| 25–49 | $64.33 |
| 50–99 | $57.48 |
| 100–199 | $45.08 |
| 200+ | $36.47 |
The 5-20-LF-PP is the ERECTA SWITCH low flow switch set in polypropylene — the same 5-20 angle body with a spring optimized for ultra-low flow detection. With spring installed: actuates at 0.042 GPM. With spring removed and switch mounted vertically: actuates at an extraordinary 0.008 GPM. Polypropylene for water-based, aqueous, and mild chemical service.
| Specification | Value |
|---|---|
| Series | 5-20-LF |
| Body | Angle body (5-20) |
| Setpoint (spring in) | 0.042 GPM |
| Setpoint (spring removed, vertical) | 0.008 GPM |
| Switch | Hermetically sealed reed | SPST N.O. |
| Contact Rating | 70 VA / 50W | 0.5A AC / 0.7A DC |
| Ports | 3× 9/16-18 UNF |
| Lead Wire | 24 in (600 mm) |
| Compliance | RoHS |
| Material | Polypropylene |
The 5-20-LF-PP 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 5-20-LF-PP 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 5-20-LF-PP 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 verify compatibility with your application and chemistry before you order.