③ The installation direction of clamp and pipe fittings shall be consistent.
① After the installation of rising stem gate valve (the valve allowed for fire protection system), the screw shall be coated with lubricating grease.
① The pipe riser passes through the floor without installation casing.
② The equipment foundation shall be 100 ~ 150 mm higher than the ground.
① Sanitary ware shall be installed with stainless steel and expansion bolts.
① The center of the water supply inlet of the toilet is 200mm to the left, the elevation is 100mm, and the allowable deviation is ± 5mm.
Coordinate: allowable deviation of single appliance is 10mm, allowable deviation of row appliance is 5mm, 2.
Elevation: allowable deviation of single appliance is ± 15mm, allowable deviation of row appliance is ± 10mm, 3.
⑤ Grooved tee rather than mechanical tee shall be selected on the main pipe to avoid reducing the mechanical strength of the riser.
⑤ ⑥ ⑦ the color separation of paint is beautiful.
② The bathtub shall be installed by the slurry method, that is, 30% and 70% cement fine water plus a small amount of water (subject to being able to be dispersed by hand) shall be paved at the bottom of the bathtub as the cushion.
The exposed thread of the code is 2 ~ 5 pitches, and the size of the code drill is also accurate.
① The support at this position shall be installed about 150mm away from the elbow.
② The dimension between the center of the card code and the opening is wrong, and the exposure of the bolt is too long, which should be exposed for 2 ~ 5 pitches.
② ④ support shall be set at the valve.
Today, the machine room is dry and tidy.
① Floor paint is selected to make the floor of the machine room more beautiful (it is not recommended to use ceramic tile for paving, which is difficult to handle due to too many necks.
① The wafer butterfly valve shall not be directly connected with the flexible joint, but shall have a section of transition flange short pipe.
The gap filling between the casing and the pipeline is not technological.
① ② the equipment of the swimming pool pump room shall be arranged on the equipment foundation of 100 ~ 150 mm, and there shall also be an annular ditch around, which will be collected and discharged to the water collecting well.
④ ⑤ each equipment has a small annular ditch, which is then summarized to the large ditch to the water collecting well.
③ The installation direction of the clamp is consistent.
The fire pipe is red, the sewage pipe is black, and the supports and hangers are gray, which do not pollute each other, but the color of the pipeline should be added.
The card code drilling size is accurate.
② ③ ④ install supports and hangers at the turning and tee of the pipeline, with accurate and reasonable positions.
① The pipeline paint has serious environmental pollution, so it is not necessary to do a good job in product protection.
① The pipe supports and hangers meet the requirements and have good manufacturability.
② The selection of supports and hangers is reasonable, and the installation position is reasonable (about 150mm away from the elbow).
② The diameter of the reverse hanging long code shall be one larger than that of the ordinary code bolt, and the washer and double nut shall be installed.
The casing with waterproof function should be made with waterproof wing ring and should not be painted.
② The pipeline support is handed over without oil and finish paint in the state of semi-finished products.
① The supports and hangers are installed without painting, and the installation is skewed.
The exposed 2 ~ 5 thread pitch of the bolt meets the requirements.
② Non rising stem gate valve with opening sign (allowed for fire protection system) ③ pipeline installation process is reasonable and beautiful.
The filling material in the casing should be non combustible material.
They are reasonably arranged 100 ~ 200 mm away from the valve.
① The supports and hangers shall be installed firmly and reliably, installed after painting, and the paint color separation shall be neat.
① The support of hot water pipeline must adopt flame-retardant PVC insulation card code.
① ② ③ triangular supports and hangers shall be used correctly and arranged at elbows and valves accurately.
① ② the water supply inlet of cup and plate is 400mm higher than the ground, the middle distance of cold and hot water inlet is 200mm, and the allowable deviation is ± 5mm.
① Ductile cast iron socket pipe shall not be directly connected with galvanized steel pipe socket, and transition pipe fittings shall be used (such as cast iron flange short pipe connected with galvanized steel pipe flange).
② The supports and hangers are opened by air welding, and the center distance of the opening is wrong, and the exposure of the long code is too long (it should be 2 ~ 5 pitch).
The casing at the wall is flush with the wall and concentric The degree meets the requirements.
① the pipe fittings are not directly installed on the wall, which meets the requirements.
① Socket cast iron and swivel flange shall be connected correctly.
⑥ The fire hydrant box shall be horizontal and vertical with an error of 1mm / m.
⑤ The pipeline shall be clearly marked, including medium flow direction, system name and use area.
(after filling hemp wire, fill cement at about 20 ~ 30mm from the top and bottom of the casing and close it at 45 degrees) ③ the fire hydrant box is not well protected (the door should be installed near the end of all works.) ① The reserved casing through the wall is too short (it should be flush with the wall + 5mm) and the center of the casing is offset from the center of the pipeline.
③ they are classified and identified according to the purpose of the water pump.
The shops should be sprayed up and down, 75 ~ 150mm away from the ceiling, and the three-way plug should be reserved.
① the selection of supports and hangers is wrong, so that the supporting force is not enough, and it will be damaged if affected by external forces.
② The base bolts of the toilet must be covered with rubber caps, and the sanitary ware installation shall be fixed with stainless steel bolts.
① A 100mm wide yellow color ring is added to the fire sprinkler system to distinguish it from the fire hydrant system.
③ ④ the installation position of the end nozzle supports and hangers is reasonable (500mm is appropriate).
Allowable deviation of levelness of appliance is 2mm, and allowable deviation of verticality is 3mm.
Triangular reinforced supports and hangers shall be selected.
③ The pipeline paint shall be neat and free of drip marks, and there shall be no mutual pollution with the color separation of the support.
③ Correct installation method of flexible joint pull rod.
② The casing passing through the floor is eccentric with the casing and the exposure is too long (it should be 20mm).
① Layout method of annular ditch of water pump.
④ Supports and hangers shall be added at the turning.
① The water outlet of bathtub faucet is 380mm away from the wall corner, 580mm high, and the allowable deviation is ± 5mm.
① The fire connector shall be marked with system and area identification.
① ② the selection of supports and hangers is reasonable, and the installation position of card code is correct, but the exposed bolts are too long.
① The arrangement of tube well pipes is neat and beautiful..
④ There is no stop valve or plug valve installed on the pressure gauge, and the return pipe of the pressure gauge shall be processed into Ф Shape.
② Deviation between flushing valve center and sanitary ware center ③ centering of flushing valve center and sanitary ware center ④ sanitary ware installation shall comply with: 1.
② The support shall be reasonably arranged at the turning of the pipeline.
① The water supply pipe laid along the outdoor road must be installed within 500mm from the edge of the horse and 700mm deep (calculated by the pipe surface).
② sufficient maintenance and operation channels are reserved in the layout of the machine room.
