QOC Door:

Vertical QOC closures are suitable for use on natural gas filter separators where filter element replacement requires frequent vessel access. Horizontal closures include double-pivot heavy duty hinge while the vertical closures can be furnished with a robust davit to raise the door once unlocked. Wide Size Ranges staring from 8” – 36” Pressure range ANSI 150 – ANSI 2500

All closures are equipped with a pressure warning screw assembly that prevents the door from being opened while under internal pressure. The pressure warning screw assembly comprises of a pressure warning screw , safety interlock segment, and connecting arm. The pressure warning screw , when loosened under gaseous pressure, will generate a whistling noise to alert the operator that the closure is under pressure. If the pressurizing media is a liquid, the pressure warning screw will leak. The safety interlock segment is connected to the pressure warning screw via the connecting arm and prevents the locking ring from being unlocked while the pressure warning screw is installed.