T/CI 042-2023 High-speed handheld weeding machine distribution control valve

Scope

Scope: This document specifies the basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage of diverter control valves (hereinafter referred to as "diverter valves") for high-speed riding transplanters. This document is applicable to diverter valves used with high-speed riding transplanters. Main technical content: 5. Technical requirements: - The type and size of the threaded connection oil ports of the diverter valve shall comply with the provisions of GB/T 2878.1. - The appearance quality shall clearly mark the symbols indicating the function of the oil ports near all the connection oil ports of the diverter valve. - The coating on the exposed non-processed surfaces of the diverter valve shall be uniform and consistent in color. The pre-treatment before spraying shall not be too greasy. The surface shall not have scratches or cracks. - Internal cleanliness: The internal cleanliness of the diverter valve shall comply with the provisions of JB/T 7858. Performance requirements: 5.4.1 Opening pressure of the relief valve: The relief valve of the diverter valve shall open normally within the range of 95% to 105% of the specified safety pressure. 5.4.2 Diverting performance: Within the rated flow range, the flow ratio tolerance between the two oil ports of the diverter valve shall be 5%. 5.4.3 Sealing performance: Under rated working conditions, there shall be no leakage at the static sealing point of the diverter valve, and no drips at the dynamic sealing point. 5.4.4 High-temperature resistance: After the 80℃ heating test, all components of the diverter valve shall operate normally, and there shall be no leakage or damage at the installation surface connected to the body. 5.4.5 Pressure resistance: All pressurized oil ports of the diverter valve shall be able to withstand 1.5 times the nominal pressure of the oil port without external leakage or damage to components. 5.4.6 Durab

Development Information

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