# US 2019/0170303 A1 · Tank Valve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170303 A1 - Document ID: US20190170303A1 - Status: Published application - Kind: A1 - Application number: 16/314,080 - Filed: 2017-06-28 - Published: 2019-06-06 - Earliest claimed: 2016-07-01 - Assignees: Daimler AG - Applicants: Daimler AG - Inventors: Simone ALBERT; Fabian GALL; Philipp HAUSMANN - Web page: https://patentgrep.com/patent/US20190170303A1 ## CPC - F17C 13/04: Arrangement or mounting of valves (valves per se F16K {; snap-coupling of nipples F16L37/00}) - F17C 2201/0109: with exteriorly curved end-piece - F17C 2201/056: Small (<1 m3) - F17C 2201/058: portable (<30 l) - F17C 2205/0134: characterised by the presence of fluid connection between vessels - F17C 2205/0317: fusing or melting - F17C 2205/0326: electrically actuated - F17C 2205/0329: manually actuated - F17C 2205/0332: Safety valves or pressure relief valves - F17C 2205/0335: Check-valves or non-return valves - F17C 2205/0341: Filters - F17C 2205/035: Flow reducers - F17C 2205/0385: in blocks or units - F17C 2205/0391: inside the pressure vessel - F17C 2205/0394: in direct contact with the pressure vessel - F17C 2221/012: Hydrogen - F17C 2221/033: Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG - F17C 2223/0123: gaseous, e.g. CNG, GNC - F17C 2223/036: Very high pressure (>80 bar) - F17C 2225/045: with a dip tube - F17C 2250/0439: Temperature - F17C 2260/012: Reducing weight - F17C 2260/018: Adapting dimensions - F17C 2260/042: Reducing risk of explosion - F17C 2265/066: for feeding engines for propulsion - F17C 2270/0178: Cars - F17C 2270/0184: Fuel cells - Y02E 60/32: Hydrogen storage - F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The invention relates to a tank valve (4) for installation on a compressed gas container (3), having a base body (5), having a shared gas connection (16) for refueling/extraction, which is divided inside the base body (5) into a refueling line (24) and an extraction line (25) as part of an extraction path, and having an extraction valve (9) in the extraction line (25). The tank valve according to the invention is characterized in that a check valve (26) is arranged in the extraction path in series with the extraction valve (9), blocking the flow against the flow direction (A) when gas is extracted. ## Claims ### Claim 1 A tank valve (4) for installation on a compressed gas container (3), having a base body (5), having a shared gas connection (16) for refueling/extraction, which is divided inside the base body (5) into a refueling line (24) and an extraction line (25) as part of an extraction path, and having an extraction valve (9) in the extraction line (25), characterized in that a check valve (26) is arranged in the extraction path in series with the extraction valve (9), blocking the flow opposite to the flow direction (A) during the extraction of gas. ### Claim 2 (depends on 1) The tank valve (4) according to claim 1, characterized in that a pipe burst protection (22) is arranged in the extraction path. ### Claim 3 (depends on 1, 2) The tank valve (4) according to claim 1 or 2, characterized in that a valve body (28, 32) of the check valve (26) and/or of the pipe burst protection (22) is lifted off its valve seat (29, 33) by means of a spring element (31, 34) during normal operation. ### Claim 4 (depends on 2, 3) The tank valve (4) according to claim 2 or 3, characterized in that the check valve (26) in the extraction line (25) and the pipe burst protection (22) are made of the same components (28, 29, 31, 32, 33, 34), installed in opposite directions. ### Claim 5 (depends on 4) The tank valve (4) according to claim 4, characterized in that a check valve (23) in the refueling line (24) is also made from the same components as the check valve (26) in the extraction line (25) and the pipe burst protection (22). ### Claim 6 (depends on 2, 3) The tank valve (4) according to claim 2 or 3, characterized in that the valve bodies (28, 32) of the check valve (26) and of the pipe burst protection (22) are designed as a single piece together with an integral structure (35). ### Claim 7 (depends on 3, 4, 5, 6) The tank valve (4) according to any one of the claims 3 to 6, characterized in that the valve body (32) and/or the valve seat (33) of the pipe burst protection (22) has a flow channel with a defined cross-section, which connects the high-pressure side with the low pressure side even in the closed state. ### Claim 8 (depends on 7) The tank valve (4) according to claim 7, characterized in that the flow channel is formed by bore holes (39, 40, 41) in the valve body (32). ### Claim 9 (depends on 7) The tank valve (4) according to claim 7, characterized in that the flow channel is formed as a straight, or preferably spiral, circumferential groove in the valve body (32) and/or valve seat (33). ### Claim 10 (depends on 7) The tank valve (4) according to claim 7, characterized in that the flow channel is formed by the leakage of a thread (45, 47). ### Claim 11 (depends on 2, 3, 4, 5, 6, 7, 8, 9, 10) The tank valve (4) according to any one of the claims 2 to 10, characterized in that the extraction path further comprises a filter (20) which is arranged between the extraction valve (9), on the one hand, and the check valve (26) and the pipe burst protection (22), on the other. ### Claim 12 (depends on 11) The tank valve (4) according to claim 11, characterized in that the filter (20), the check valve (26) and the pipe burst protection (22) are assembled to form one component (43). ### Claim 13 (depends on 12) The tank valve (4) according to claim 12, characterized in that the component (43) adjoins the extraction line (25) in the extraction path in the direction of the interior of the compressed gas container (3). ### Claim 14 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13) The tank valve (4) according to any one of the claims 1 to 13, characterized in that the extraction line (25) and the refueling line (24) have the same nominal diameter of their line elements through which gas can flow. ### Claim 15 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) The use of a tank valve (4) according to any one of the claims 1 to 14, on a compressed gas container (3) used for storing hydrogen or natural gas, in particular at a nominal pressure of more than 65 MPa, as fuel in a vehicle (1).