The invention discloses a valve device and a gas
water heater, and relates to the technical field of water heaters. The valve device comprises a valve body and a valve element
assembly, the valve body is provided with a valve cavity, a water inlet runner, a first water outlet runner and a second water outlet runner, the water inlet runner, the first water outlet runner and the second water outlet runner are communicated with the valve cavity, the first water outlet runner is provided with a first water passing opening communicated with the valve cavity, and the second water outlet runner is provided with a second water passing opening communicated with the valve cavity; the first water through hole is formed in the
peripheral wall surface of the valve cavity; the valve element
assembly comprises a rotating shaft rotationally arranged in the valve cavity, a first valve element and a second valve element, the first valve element and the second valve element are fixedly arranged on the rotating shaft in a spaced mode, and the first valve element is rotationally matched with the
peripheral wall face of the valve cavity to shield or open the first water passing opening and used for adjusting the communication area of the valve cavity and the first water outlet runner. The second valve element rotates in the valve cavity to shield or open the second water passing opening and is used for adjusting the communication area of the valve cavity and the second water outlet flow channel. According to the technical scheme, the fluctuation amplitude of the outlet
water temperature of the gas
water heater can be reduced, and the constant-temperature performance is improved.