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See Chinese contents: MT/T 715-1997 MT/T 715-1997: General specification of explosion-proof electromagnet valves in coal mine
This standard specifies the requirements, test methods, inspection rules (exit-factory inspection and type test), marking, packaging and storage of explosionproof electromagnet valves in coal mine. This standard is applicable to the two-position-two-way explosion-proof electromagnet valves in coal mine which use water as the working medium.
