T/WZS 0012-2025 Corrosion-resistant self-priming wastewater pump without blockage

Scope

Scope: This document specifies the types, basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage of corrosion-resistant non-clogging self-priming sewage pumps. This document applies to corrosion-resistant non-clogging self-priming sewage pumps (hereinafter referred to as pumps) used for transporting industrial wastewater containing solid particles, as well as sewage and other similar liquids in agriculture, urban construction, petrochemical, mining, urban and rural areas, etc. Main technical content: The flow rate, head, efficiency, and self-priming height of the pump at its specified performance points shall comply with the requirements of Table 1 in Section 3.2.1. The tolerance of the pump's specified performance shall comply with the provisions of Level 2 in GB/T 3216-2016. When the pump's flow rate is within 0.7 to 1.2 times the specified flow range, the shaft power shall not exceed the rated power of the pump's matching prime mover. When the pump's efficiency exceeds the specified value, it is allowed to reduce the power rating of the pump's matching prime mover, but it shall ensure that the shaft power does not exceed the rated power of the reduced power rating of the pump's matching prime mover within the 0.7 to 1.2 times specified flow range. The self-priming time of the pump at its maximum suction head shall not exceed 180 seconds.

Development Information

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