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4 products found
Ben Co., Ltd.
400+ people viewing
The intake/exhaust valve sucks in a large amount of air when the water supply piping becomes negative pressure, eliminates the negative pressure, a...
Ben Co., Ltd.
440+ people viewing
Last viewed: 1 day ago
The intake/exhaust valve sucks in a large amount of air when the water supply piping becomes negative pressure, eliminates the negative pressure, a...
Ben Co., Ltd.
340+ people viewing
Last viewed: 1 day ago
Ventilation valves are installed in drainage vertical pipes, drainage side pipes, etc., and when negative pressure is generated, the valve opens, s...
Ben Co., Ltd.
440+ people viewing
Last viewed: 1 day ago
Ventilation valves are installed in drainage vertical pipes, drainage side pipes, etc., and when negative pressure is generated, the valve opens, s...