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Waterflow Indicator & Supervisory Switches
Vane-type waterflow indicator and OS&Y valve supervisory switches
ZSJZ-YM-450 vane-type waterflow indicator for wet pipe systems with adjustable delay, and OSYSS-1/2/3 supervisory switches that monitor the open position of OS&Y gate valves.
Waterflow Pressure
450 PSI / 300 PSI
OSYSS Protection
IP67 · −40 to 60°C
Model Range
| Model | Function |
|---|---|
| ZSJZ-YM-450 | Vane-type waterflow indicator, DN50–DN250 |
| OSYSS-1 | 1 microswitch, 0 cover tamper |
| OSYSS-2 | 2 microswitches, 0 cover tamper |
| OSYSS-3 | 2 microswitches, 1 cover tamper |
Model numbers, performance data and approvals are reproduced from the manufacturer reference catalog. Availability, country-specific approvals and exact configuration must be confirmed against OEM documentation before quotation. Manufacturer certifications are not certifications issued to AMKRON.
Technical Specifications
Waterflow Pressure
450 PSI / 300 PSI
Alarm Flow
> 15 L/min (≤ 75 L/min FM; ≤ 37.5 L/min UL)
Switch Contacts
AC 125/250V 8A · DC 24V 3A · DC 30V 2.5A
Retard
0–90 seconds field-replaceable
OSYSS Protection
IP67 · −40 to 60°C
OSYSS Service
NFPA 13, 13D, 13R, 72 · FM approved
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