The back-seating of a suction shutoff valve will close the: ______ ______.

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Multiple Choice

The back-seating of a suction shutoff valve will close the: ______ ______.

Back-seating a suction shutoff valve closes the gauge port. The valve housing includes a small gauge port for connecting manifold gauges to read suction pressure. When you back-seat the valve, the stem is pressed against the back seat, sealing off the internal passage to that gauge port. This isolates the gauge port from the system, preventing refrigerant from escaping through it during maintenance. The other flow paths (suction line, discharge line, liquid line) aren’t closed by this action.

Back-seating a suction shutoff valve closes the gauge port. The valve housing includes a small gauge port for connecting manifold gauges to read suction pressure. When you back-seat the valve, the stem is pressed against the back seat, sealing off the internal passage to that gauge port. This isolates the gauge port from the system, preventing refrigerant from escaping through it during maintenance. The other flow paths (suction line, discharge line, liquid line) aren’t closed by this action.

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