Four fitting styles for Series 5 flow switch 9/16-18 UNF ports. 1/8 NPT female, 1/4 NPT female, 1/2 NPT male, 1/2 hose barb. Polypropylene handles water, water-based coolants, soaps, detergents, and dilute acid/alkaline solutions.
| Quantity | Price |
|---|---|
| 1–9 | $4.38 |
| 10–24 | $4.20 |
| 25–49 | $3.85 |
| 50–99 | $3.49 |
| 100–199 | $3.11 |
| 200+ | $2.95 |
Series 5 accessory fittings in polypropylene for the 9/16-18 UNF ports on all Series 5 flow switches. Four styles: 1/8 NPT female (1/8NPTF), 1/4 NPT female (1/4NPTF), 1/2 NPT male (1/2NPTM), and 1/2 inch hose barb (1/2H). At least one fitting required on every port — the outlet port on 5-21 and 5-21H switches requires a fitting.
| Specification | Value |
|---|---|
| Series | 5-XX |
| Thread (switch end) | 9/16-18 UNF male |
| Fitting Types | 1/8NPTF / 1/4NPTF / 1/2NPTM / 1/2H |
| Materials | Polypropylene |
| Note | At minimum one fitting required per port. 5-21/5-21H outlet port requires fitting. |
| Compliance | RoHS |
The 5-XX-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-XX-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-XX-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.