Non-return valve for hand portable pressure gas tank, particularly compressed gas bottle, has housing and hand wheel, where opening characteristic has area assigned to closed position and another area assigned to open position
摘要
<p>The non-return valve (1) has a housing (3) and a hand wheel (4), where the opening characteristic has an area assigned to the closed position and another area assigned to the open position. The increase of the flow rate per rotating angle unit in the former area is smaller than in the latter area.</p>
