Water supply system
Building water supply directly from the outdoor pipe network, from the basement trunk pipe to the distribution point (bathroom, kitchen, air conditioning room).
Water pipe with
thin-walled stainless steel tube (pipe and pipe material are
316L, DN ≤ 100 with snap-type stainless steel pipe fittings link, DN> 100 with stainless steel groove clamp link; seal with chlorinated butyl rubber Circle (CIIR). Buried pipe or buried water pipe branch pipe used. Clamp material is
304.
Water supply pipe shut-off valve DN ≤ 50 using J16GB03MR type internal thread stainless steel globe valve (pressure grade 1.6MPa) DN> 50 with Z16MFMB03MR flange connection stainless steel gate valve (pressure grade 1.6MPa). Backflow Preventer DN> 50 With YQDFQ4TX-16P flange connection stainless steel backflow preventer, DN≤50 with YQDFQG2TX-16P threaded stainless steel bbackflow preventer (with filter, pressure grade 1.6MPa). Valve material is 304. Check valve with YQH42AX-16p check valve. Float valve with YQ98003-16Q filter piston remote control float valve.
Water supply pipe should be water pressure test, working pressure by 0.60MPa, the specific operation by GB50242-2002 implementation. Buried pressure pipe section, should be carried out before the water pressure test.
Construction preparation
1, Materials: thin-walled stainless steel tube and pipe fittings, thin-walled stainless steel coated tube, O-ring.
2, The main machine: electric hydraulic separation card press, manual hydraulic separation of the pressure device, electric pipe cutting machine, manual pipe cutter, electric pressure slot machine.
3, According to the specific circumstances of the construction of the corresponding artificial.
4, Pipeline in the construction, must be familiar with the design and construction drawings, technical information and construction acceptance of the technical requirements. Formulate material supply, equipment and labor demand planning to ensure the smooth start of the project.
5, According to the professional construction drawings for pipeline integrated arrangement of the pipeline elevation, to optimize, and reported to the relevant departments for examination and approval. To be approved by the relevant departments after the construction schedule to draw on-site installation sketches, the length of each section of the pipeline on-site measurement and detailed labeling, has facilitated the late pipeline material prefabrication process of cutting down to reduce material waste.
6, The water supply system pipeline construction, the first underground pipeline after the ground pipe, the first vertical total (dry) pipe installation, and then the level of the total, branch pipe installation.
7, Before the pipeline installation, all the pipe and pipe fittings should have a certificate of quality or product certification, and its appearance to undergo a rigorous inspection, the appearance of no heavy skin, cracks, rust and other phenomena, the surface and the inner wall should be smooth, no defect holes, cracks, scarring, split or stomata, and the interface socket feel appropriate, in line with national standards. Pipe number, mechanical properties and chemical composition are consistent with the design, does not meet the above requirements, shall not be installed.
