Standard No.:	CJ/T 501-2016
English Name:	Isolated gas-pressurization device
Chinese Name:	隔绝式气体定压装置
Chinese Classification:	P46    Heat supply and heating engineering
Professional Classification:	CJ    Professional Standard - Urban Construction
ICS Classification:	91.140.10 91.140.10    Central heating systems 91.140.10
Issued by:	Ministry of Housing and Urban-Rural Construction of the People’s Republic of China
Issued on:	2016-09-06
Implemented on:	2017-3-1
Status:	valid
Superseding:	CJ/T 3053-1995 Isolative gas-pressurized expansion device
Language:	English
File Format:	PDF
Word Count:	7500 words
Price(USD):	220.0
Delivery:	via email in 1 business day

CJ/T 501-2016 Isolated gas-pressurization device 1 Scope This standard specifies the terms and definitions, classification and designation, general requirements, requirements, test methods, inspection rules, as well as marking, packing, transportation and storage of the isolated gas-pressurization device. This standard is applicable to the isolated gas-pressurization device for heating and air conditioning systems with the in-tank medium temperature less than 100°C. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 150.1 Pressure vessels - Part 1: General requirements GB 150.2 Pressure vessels - Part 2: Materials GB 150.3 Pressure vessels - Part 3: Design GB 150.4 Pressure vessels - Part 4: Fabrication, inspection and testing, and acceptance GB/T 191 Packaging - Pictorial marking for handling of goods GB/T 3047.1 Series of basic dimensions of panels, rack and cabinets for vertical increment of 20mm GB/T 3797 Electrical control assemblies GB 4208-2008 Degrees of protection provided by enclosure (IP code) GB 7251.1 Low-voltage switchgear and controlgear assemblies - Part 1: General rules GB/T 13306 Plates GB/T 13384 General specifications for packing of mechanical and electrical product GB/T 13934 Rubber, vulcanized or thermoplastic - Determination of flex cracking and crack growth (De Mattia) JB/T 4709 Welding specification for steel pressure vessels JB/T 4711 Coating and packing for pressure vessels transport 3 Terms and definitions For the purposes of this document, the following terms and definitions apply.   3.1 isolated gas-pressurization device equipment composed of diaphragm pneumatic vessel, electrical control box and auxiliary equipment, which makes use of the compression and expansion properties of the gas stored in the closed tank body to keep the pressure of heating and air conditioning system within a certain range (hereinafter referred to as "pressurization device") 3.2 diaphragm body impermeable film with heat resistance and strength 3.3 tank body metal tank capable of withstanding system pressure 3.4 diaphragm pneumatic vessel metal tank that uses a built-in diaphragm body to isolate air and water 3.5 nominal insulation voltage standard voltage value which is used to measure the insulation strength, electric clearance and creepage distance of different potential parts of an electrical appliance and its components under specified conditions 4 Classification and designation 4.1 Classification 4.1.1 The isolated gas-pressurization device is classified into the one with gas supply equipment and the one without gas supply equipment by the presence of gas supply equipment.

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification and designation 5 General requirements 6 Requirements 7 Test methods 8 Inspection rules 9 Marking, packing, transportation and storage