Product Description
Selas 2" Flanged Firecheck Valve With Honeywell OP-AR Micro Switch
The Selas automatic fire check, or flame arrestor, is basically a check valve which is closed by actuation of a thermal release. Hardware includes a shut-off valve, check valve, corrugated fire screen, and a thermal latch. In normal operations, the combustible fuel/air mixture passes freely through these components. If flashback occurs, the sudden increase in back pressure will cause the check valve to close and momentarily interrupt the forward flow of the fuel/air mixture. The reduced flow and the internal configuration of the fire check allow the backward-traveling flame to stop at the fire screen. The tiny holes and chilling capacity of the fire screen hold the flame on the screen until the thermal element is heated and releases the latch to close the shut-off valve. This valve-closure stops fuel/air flow and prevents the flashback from proceeding past the fire check. The shut-off valve remains closed until manually reset.
Honeywell OP-AR Micro Switch
- Limit Switch Actuator: Roller Lever
- Contact Configuration: SPDT
- Contact Current AC Max: 15A
- Contact Voltage AC Max: 480V
- Operating Force Max: 1.25lbf
- Product Range: -
- Contact Current DC Max: 500mA
- Contact Voltage DC Max: 250V
