1. Installation of PEX plumbing pipeline mainly on butt welding. Flange connections to put only where adherence to the connecting pipes, fittings and plugs, as well as material lines, where it is necessary for the installation conditions.
2. Laying PEX plumbing pipeline must be made at elevations specified in the installation drawings, while liquid PEX plumbing pipe should be installed in compliance with slopes that provide fluid flow during transportation. Gradient, is taken within 0,002-0,005.
3. Fixing plumbing pipeline carry on hangers, brackets, braces or other types of steel, fabricated on site. The distance between the supports to take: for steel plumbing pipeline 2-4 meters for non-metallic plumbing pipeline 1-2 pm
4. Fixture on the non-metallic plumbing pipeline mount separately to plumbing pipeline did not experience additional load.
5. The distance from the axis of PEX plumbing pipe to the wall in mm taken depending on the nominal bore in mm
6. The smallest radius of bending pipes allowed:
a) for bending of tubes with padding it with sand and heating at least 3.5 outer pipe diameters;
b) for bending of tubes on the machine without packing sand (cold) not less than 4.0 outer diameter pipe;
c) for a plumbing pipeline when the bending radius of less than 2.5 outer diameters of pipes and plumbing pipeline with a nominal bore exceeding 100 mm manufacturing the knee bends and welded from individual sectors.
7. When connecting pumps and devices mount plumbing pipeline to produce such a way that the weight of plumbing pipeline and fittings are not transmitted to the pumps.
Monday, November 15, 2010
When testing equipment and plumbing pipeline
1. Mounted equipment shall be subjected to external examination and test the strength and density.
2. Test equipment to produce the hydraulic method in accordance with the technical conditions specified in the drawings of devices. The test is conducted in the presence of the TCI, and, if necessary, and a representative of the water inspection.
3. Apparatus with agitators and pumps are tested at idle for 24 hours and the working speed (when filling with water) for 12 h.
4. Mounted plumbing pipeline shall be subjected to external examination, testing the strength and density, and, where necessary, cleaning or purging.
5. Testing of plumbing pipeline can be hydraulically or pneumatically. Typically, the test plumbing pipeline should be carried out hydraulically.
6. The test tube is disconnected from the apparatus and other plumbing pipeline plugs with shanks.
7. Hydraulic pressure test the pipeline on the strength and density simultaneously, test pressure must be equal to 1.25 working pressure, but not less than 2 atm.
8. At the top point of the test pipe should be installed air vent, and lower - purge before filling.
9. The test pressure is held for 5 minutes, after which it drops to desktop, when this pressure is inspection of the pipeline and tapping the welds with a hammer weighing not more than 1,5 kg.
10. Pneumatic test plumbing pipeline is the strength and density. When testing the strength of the test pressure must be equal to 1.25 of the working pressure but not less than 2 atm. The test pressure is held for 5 minutes, after which it drops to desktop. When tested on the density of the test pressure must be equal to the worker.
11. Pneumatic testing technology plumbing pipeline pressures to produce up to:
with the diameter of the pipeline up to 200 mm. - 20 atm
the diameter of the pipeline from 200 to 500 mm. - 12 atm
with the diameter of the pipeline of over 500 mm. - 6 atm
12. For installation on a cast-iron plumbing pipeline valves pneumatic test pipeline is allowed to test pressure of not higher than 4 atm.
13. When the pneumatic test pressure in the plumbing pipeline should rise gradually from inspection of the pipeline when the following pressures:
for plumbing pipeline operating pressures up to 2 atm - 0 6 test pressure;
for plumbing pipeline operating pressures above 2 atm - 0,3 and 0,6 of the test pressure.
When pneumatic testing hammer tapping the pipeline under pressure, is not allowed.
14. plumbing pipeline, transporting toxic and explosive products, except for checking the strength shall be tested for density with the definition of pressure drop in the plumbing pipeline during the test. Test duration of at least 12 hours
15. The pipeline is recognized to pass the test on the density, if the pressure drop in it no more than the quantities listed in the table.
2. Test equipment to produce the hydraulic method in accordance with the technical conditions specified in the drawings of devices. The test is conducted in the presence of the TCI, and, if necessary, and a representative of the water inspection.
3. Apparatus with agitators and pumps are tested at idle for 24 hours and the working speed (when filling with water) for 12 h.
4. Mounted plumbing pipeline shall be subjected to external examination, testing the strength and density, and, where necessary, cleaning or purging.
5. Testing of plumbing pipeline can be hydraulically or pneumatically. Typically, the test plumbing pipeline should be carried out hydraulically.
6. The test tube is disconnected from the apparatus and other plumbing pipeline plugs with shanks.
7. Hydraulic pressure test the pipeline on the strength and density simultaneously, test pressure must be equal to 1.25 working pressure, but not less than 2 atm.
8. At the top point of the test pipe should be installed air vent, and lower - purge before filling.
9. The test pressure is held for 5 minutes, after which it drops to desktop, when this pressure is inspection of the pipeline and tapping the welds with a hammer weighing not more than 1,5 kg.
10. Pneumatic test plumbing pipeline is the strength and density. When testing the strength of the test pressure must be equal to 1.25 of the working pressure but not less than 2 atm. The test pressure is held for 5 minutes, after which it drops to desktop. When tested on the density of the test pressure must be equal to the worker.
11. Pneumatic testing technology plumbing pipeline pressures to produce up to:
with the diameter of the pipeline up to 200 mm. - 20 atm
the diameter of the pipeline from 200 to 500 mm. - 12 atm
with the diameter of the pipeline of over 500 mm. - 6 atm
12. For installation on a cast-iron plumbing pipeline valves pneumatic test pipeline is allowed to test pressure of not higher than 4 atm.
13. When the pneumatic test pressure in the plumbing pipeline should rise gradually from inspection of the pipeline when the following pressures:
for plumbing pipeline operating pressures up to 2 atm - 0 6 test pressure;
for plumbing pipeline operating pressures above 2 atm - 0,3 and 0,6 of the test pressure.
When pneumatic testing hammer tapping the pipeline under pressure, is not allowed.
14. plumbing pipeline, transporting toxic and explosive products, except for checking the strength shall be tested for density with the definition of pressure drop in the plumbing pipeline during the test. Test duration of at least 12 hours
15. The pipeline is recognized to pass the test on the density, if the pressure drop in it no more than the quantities listed in the table.
Domestic Taco pumps. How to choose right?
Pumps of all types presented on the market today differ in the first place, technical characteristics. In addition, the pumps vary in purpose, principle of operation and size.
Main technical characteristics to which attention should be paid, by choosing an Taco pump - his head and power.
Pump head determines the maximum depth at which it can pump water. Performance of the pump, its ability to pump a certain amount of fluid per unit of time depends on its power.
The pressure is calculated as follows: first calculate the distance from the source water to the level of water-points. For example, if the well is in the area is filled with water to a depth of 20m, a crane located on the second floor of the house, at a height of 4 m, the required distance will be 24. Then make corrections on the coefficient of head loss of the jet, due to friction, the value found in this case is multiplied by 1.15. Then add the length of the pipeline, from home to the wells, for example, 7 meters. Thus, a value indicating the minimum allowable pressure pump. In the calculation of this value is 34, 6 pm
Based on the average liquid flow rate is determined by the required pumping capacity. Suppose, for the needs of one person to 800-1000 liters of water per day. The resulting number is multiplied by the number of inhabitants of a country house. For example, a family with two children will spend a day about 3600 liters. We add to this flow of water for irrigation area of 500 liters per day per hundred square meters, with an area of garden in five hundred parts consumption is approximately 2500l.
Eventually creating a sum / 3600 2500 = 6100 liters or 6.1 cubic meters. m / s gives a rough idea of the required quantity of water consumed on the farm and, therefore, helps to orient the choice of the pump power required.
Regardless of all its features, any Taco pump provides comfortable accommodation in a suburban environment at relatively low cost.
Main technical characteristics to which attention should be paid, by choosing an Taco pump - his head and power.
- Taco 007 SF5 - Taco 007 Stainless Steel Circulator Pump
- Taco 007 F4 - Taco 007 Cast Iron Circulator Pump
- Taco 007 F3 - Taco 007 Cast Iron Circulator Pump
- Taco 007 F5-7IFC - Taco 007 Cast Iron Circulator Pump with IFC (Integral Flow Check)
Pump head determines the maximum depth at which it can pump water. Performance of the pump, its ability to pump a certain amount of fluid per unit of time depends on its power.
The pressure is calculated as follows: first calculate the distance from the source water to the level of water-points. For example, if the well is in the area is filled with water to a depth of 20m, a crane located on the second floor of the house, at a height of 4 m, the required distance will be 24. Then make corrections on the coefficient of head loss of the jet, due to friction, the value found in this case is multiplied by 1.15. Then add the length of the pipeline, from home to the wells, for example, 7 meters. Thus, a value indicating the minimum allowable pressure pump. In the calculation of this value is 34, 6 pm
Based on the average liquid flow rate is determined by the required pumping capacity. Suppose, for the needs of one person to 800-1000 liters of water per day. The resulting number is multiplied by the number of inhabitants of a country house. For example, a family with two children will spend a day about 3600 liters. We add to this flow of water for irrigation area of 500 liters per day per hundred square meters, with an area of garden in five hundred parts consumption is approximately 2500l.
Eventually creating a sum / 3600 2500 = 6100 liters or 6.1 cubic meters. m / s gives a rough idea of the required quantity of water consumed on the farm and, therefore, helps to orient the choice of the pump power required.
Regardless of all its features, any Taco pump provides comfortable accommodation in a suburban environment at relatively low cost.
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