Factory replacement poppet for Series 5 flow switches. Specify setpoint at order — poppet is calibrated to flow setpoint. Polypropylene handles water, water-based coolants, soaps, detergents, and dilute acid/alkaline solutions.


| Quantity | Price |
|---|---|
| 1–9 | $14.55 |
| 10–24 | $14.51 |
| 25–49 | $12.79 |
| 50–99 | $11.28 |
| 100–199 | $9.56 |
| 200+ | $8.95 |
The 5-16-PP is the factory replacement poppet for Series 5 PP flow switches. When replacing a worn or damaged poppet, order the same setpoint as the original switch. Accessible via the clean-out port without line disconnection on 5-20 angle body switches.
| Specification | Value |
|---|---|
| Series | 5-16 |
| Type | Replacement poppet assembly |
| Compatibility | All Series 5 flow switches (5-20, 5-21, 5-21H, 5-30) |
| Setpoints | 0.10 / 0.25 / 0.50 / 0.75 / 1.00 GPM (must match original) |
| Materials | Polypropylene |
| Note | Specify same setpoint as installed switch |
The 5-16-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 5-16-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 5-16-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.