This standard specifies the classification and model, materials and structure, performance requirements, test methods, inspection rules, markings, instructions for use, packaging, transportation and storage of closed expansion water tanks with built-in diaphragms (hereinafter referred to as "expansion water tanks"). This standard applies to closed expansion water tanks with normal operating temperature not greater than 70 ℃, maximum operating temperature not greater than 90 ℃, maximum working pressure not greater than 3 MPa, effective volume not greater than 12 L, used for heating or water supply systems.
GB/T 3512 Rubber, vulcanized or thermoplastic.Accelerated ageing and heat resistance tests.Air-oven method
GB/T 528 Rubber,vulcanized or thermoplastic.Determination of tensile stress-strain properties
GB/T 531.1 Rubber,vulcanized or thermoplastic.Determination of indentation hardness.Part 1:Duromerer method( Shore hardness)
GB/T 5781 Hexagon head bolts.Full thread.Product grade C
GB/T 7306.1 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads Part 1:Parallel internal and taper external threads
GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads Part 2:Taper internal and external threads
GB/T 7307 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads
GB/T 7759.1 Rubber, vulcanized or thermoplastic.Determination of compression set.Part 1:At ambient or elevated temperatures
GB/T 9286-1998 Paints and varnishes--Cross cut test for films
T/CECS 10004-2018 history
2018T/CECS 10004-2018 Closed expansion vessels with built in diaphragm