GB/T 29730-2025Distribution manifold of cold/hot water (English PDF)

1 Scope

This document specifies the classification and marking, general requirements, requirements, test methods of manifolds for hot and cold water (hereinafter referred to as "manifolds").

Methods, inspection rules, marking, packaging, transportation and storage.

This document applies to manifolds in hot and cold water cooling and heating systems of civil buildings and ancillary buildings of industrial buildings.

This document is not applicable to large manifolds in refrigeration rooms or heating exchange stations.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document.

GB/T 1220 Stainless steel bars

GB/T 1804 General tolerances Tolerances for linear and angular dimensions without tolerance indications

GB/T 2828.1 Sampling procedures for inspection by attributes Part 1.Sampling plans for batch inspection based on acceptance quality limit (AQL)

GB/T 5231 Grades and chemical compositions of processed copper and copper alloys

GB/T 6461-2002 Rating of specimens and test pieces of metal and other inorganic coatings on metal substrates after corrosion testing

GB/T 7306.1 55° sealing pipe threads Part 1.Cylindrical internal threads and conical external threads

GB/T 7306.2 55° sealing pipe threads Part 2.Conical internal threads and conical external threads

GB/T 7307 55° non-sealed pipe thread

GB/T 9124.1 Steel pipe flanges Part 1.PN series

GB/T 9124.2 Steel pipe flanges Part 2.Class series

GB/T 9797 Metallic and other inorganic coatings—Nickel, nickel-chromium, copper-nickel and copper-nickel-chromium electroplated coatings

GB/T 10125 Artificial atmosphere corrosion test Salt spray test

GB/T 12771 Stainless steel welded pipes for fluid transportation

GB/T 13912 Technical requirements and test methods for hot-dip galvanized coatings on metallic steel products

GB/T 13913 Specification and test methods for electroless nickel-phosphorus alloy coatings on metallic coverings

GB/T 13927 Industrial valve pressure test

GB/T 14536.1 Automatic electric controllers Part 1.General requirements

GB/T 14832 Compatibility test of standard elastomer materials and hydraulic fluids

GB/T 15820 Polyethylene pressure pipe and fittings connection resistance test

GB/T 30832 Test method for valve flow coefficient and flow resistance coefficient

JB/T 8219 Standard and intelligent electric actuators for industrial process control systems

QB/T 5788 Electric Heating Actuator

YS/T 583 Brass rods for hot-forged plumbing fittings

3 Terms and Definitions

The following terms and definitions apply to this document. […]