Compact air stop valve for aircraft galley plumbing system

摘要

A backflow resistant stop valve for an aircraft galley plumbing system comprises a valve body defining an inlet, and inlet chamber, a transfer chamber, an outlet chamber, and an exit. The valve incorporates an anti-backflow device at the exit to prevent backflow, and flow through the body is controlled by a pivoting paddle disposed within the valve body having an upper flap, a spindle, and a lower flap, where the upper flap seals against the inlet chamber and the lower flap seals against the outlet chamber when the paddle is rotated to a first position. The valve utilizes a negative pressure at the outlet chamber that biases the valve closed until a sufficient column of water overcomes the bias.

主权项

1. A backflow resistant stop valve for an aircraft galley plumbing system, comprising:
a valve body defining an inlet, and inlet chamber, a transfer chamber, an outlet chamber, and an exit; an anti-backflow device at the exit; a pivoting paddle disposed within the valve body having an upper flap, a spindle, and a lower flap, where the upper flap seals against the inlet chamber and the lower flap seals against the outlet chamber when the paddle is rotated to a first position, the paddle including an intermediate section between the upper flap and the lower flap, said intermediate section having at least one fluid transfer aperture to allow flow to bypass the paddle thereinthrough; wherein a negative pressure at the outlet chamber biases the valve closed until a sufficient column of water overcomes the bias.