Dwyer Instruments SFI-100-3/4 Indicator 320788-704 Key Benefits Fail-Safe Reliability: Mechanical

Key Benefits Fail-Safe Reliability: Mechanical spring return ensures the damper or valve returns to a safe position during emergency power interruptions

the 0274496 provides a reliable

Precision Threading: Heavy-duty connection nut ensures a secure ground and prevents voltage drop at the gas valve

When the indicator reaches the red 'service' level (typically every 6 to 9 months)

Dwyer Instruments SFI-100-3/4 Indicator 320788-704 Key Benefits Fail-Safe Reliability: MechanicalThe Dwyer Instruments SFI 100 3 4 is a field proven sight flow indicator designed for immediate visual verification of fluid movement in pressurized systems. For an HVACR contractor, this 3 4" NPT inline flow indicator is essential for diagnosing flow issues in chiller systems, hydraulic lines, and industrial coolant loops. Built with a heavy duty bronze body and a rugged tempered glass window, it handles line pressures up to 125 psig and operating