PVC110 drain pipe installation spacing: pipe card setting and slope specification

In the drainage system of residential and office buildings, PVC110 drain pipe is the most common pipe material - it is lightweight, corrosion-resistant and affordable, but the spacing and slope control of the pipe card during installation directly determine the drainage effect and pipeline life. If these two details are not done well, the light is slow drainage and odor, and the heavy is the displacement and leakage of the pipe. Not to mention the trouble of later maintenance, it also affects the living experience.

First, talk about the doorway where the pipe card is set. The function of the pipe card is like a "fixing belt", which can firmly lock the pipe to the wall or ceiling to prevent the impact of water flow or the displacement caused by the pipe's own weight. For PVC110 risers (vertically installed pipes), the pipe card spacing should generally be controlled between 1.5-2 meters, and each riser must be installed at least 2 - such as a 3-meter-high riser, one at the bottom 1 meter, and another at the top 1.5 meters, which can effectively disperse the weight. And the horizontal pipe (horizontal or inclined pipes) because of the greater impact of the water flow, the spacing is more dense, usually 1-1.5 meters a, especially in the place of turning and joints, must add additional pipe cards to avoid pipe shaking and cause the joint to loosen.

pipe card also pays attention to: choose the one that matches the outer diameter of the PVC110 pipe - such as a U-shaped plastic card or a stainless steel elevator. If it is too loose, it will not be fixed, and if it is too tight, it will deform the pipe. When installing, screw it firmly with expansion screws, but don't use too much force - PVC pipes are brittle and prone to cracking due to excessive extrusion. If the horizontal pipe is installed in the ceiling, the length of the boom of the elevator should be adjusted to ensure that the pipe is level (or inclined according to the slope requirements) and not crooked.

Let's talk about the most critical slope specification. The slope of the horizontal pipe of the PVC110 drain pipe must meet the "Construction Quality Acceptance Standards for Building Water Supply, Drainage and Heating Works". The general design slope is 0.026, which means that each meter of pipe should drop by 2.6 cm. For example, a 4-meter-long horizontal pipe has a height difference of 10.4 cm (42.6) between the start and end points. If the slope is too small, the water flow will be slow, and hair and debris will easily get blocked in the pipeline; if the slope is too large, it will cause uneven force on the pipeline joints, and it may be degummed and leaked over time.

Don't rely on your eyes to guess the slope, you must use a tool: a level ruler or an electronic level is the most accurate. First draw a baseline line at the beginning of the pipeline, and then measure the height every 1 meter to ensure that each section meets the requirement of "2.6 cm drop per meter". If the ground is piped, you must first level the ground, otherwise the ground will be high and low, and the slope of the pipeline will follow.

Finally, remind a few details: check the pipeline before installation - whether there are cracks, depressions, and uneven nozzles; use corrosion-resistant pipe cards, such as plastic or 304 stainless steel, not ordinary iron cards, which will be loose if rusted; at the bottom of the riser in high-rise residential buildings, it is best to add a pipe card within 1 meter to prevent the riser from sinking; the joint must be glued with PVC special glue, and the glue should be evenly applied. After drying for 3-5 seconds, insert it. After inserting it to the bottom, turn it around to ensure sealing.

In fact, the installation of the PVC110 drain pipe is not so complicated, that is, "the details should be strictly pulled" - the spacing of the pipe cards is correct, the pipe will not shake; if the slope is accurate, the drainage will not be blocked. Do these little things well, and the drainage system can be used safely for more than Construction masters spend more time on measurement and fixing, and later owners are less troublesome.