Nov 30

Front Work

Pay attention to the cut tubes: what is the quality of the metal itself? Pipe wall along its entire thickness from the front to the reverse side shall be uniformly fine-grained, dense, homogeneous. In addition, check the tube by tapping: the sound should be smooth and hollow, and in places where the audio tone changes, likely internal defect. Here the situation – as with a sick tooth decay process which may take place under the outwardly prosperous look. To detect this kind of damage and used tapping. Acquired iron pipe must be protected against corrosion, or continuous operation, it does not serve you for a long time. One way to protect against corrosion is to coat the outer surface of the pipe asphalt made from petroleum. Ping Fu has many thoughts on the issue. Of course, you can apply it themselves, having the right experience and materials.

Next you need to remind you how important it is correct, cast-iron pipe connections between structures. You must have a high quality, oakum, made from hemp fibers and of sufficient length. Tow should be free from all sorts of impurities, does not contain wood. Tow the timber can not properly perform its insulating function, resulting in a tube soon begins to seep into the joints. The consequences are well known: wet ceilings or rotten floors. Strictly speaking, we would not recommend that you carry out assembly of cast-iron pipe for its lack of housing in specialist. The highest priority in our environment is still holding this type of work a competent master, looking for work where you can learn a lot.

Nov 28

Braiding

Rubber hoses are used for suction and discharge of various liquids, steam, gases, fuels, oils, acids, alkalis, bulk materials, as well as flexible pipelines. Rubber-type injection subdivided as follows: pressure hoses with a textile carcass with GOST 18698-79, the sleeves of pressure from increased filament reinforced with GOST 10362-76, Sleeves pressure-suction GOST 5398-76, hoses for gas welding and cutting metals to GOST 9356-75, the sleeves of high pressure with a metal armature winding with connecting hoses TU 23.1.40-80 sleeves with reinforced metalloopletkoy GOST 6286-73, hoses and fittings gasket design "dyurit" N 005 6016-87, hoses for irrigation. is often quoted as being for or against this. Depending on the destination, hoses are divided into classes: B – the gasoline, diesel fuel, petroleum-based oils, B – for feeding process water; HS – for hot water at temperatures up to +100 C; T – for air, carbon dioxide, nitrogen and other inert gases, Km – to feed the weak solutions of inorganic acids and bases, the concentration of up to 20% (except nitric), PAR-1 – for high steam to +143 C, pressure 0.3 MPa; PAR -2 – for high steam up to +175 C pressure of 0.8 MPa, P – for delivering nutrients (alcohol, wine, beer, milk, slightly acidic solutions of organic and other substances, drinking water), W – for feeding abrasive material (sand from the blasting), alkali and acid solutions for plastering and painting works. 1 MPa = 10 atm = 10 kg / cm pressure rubber hoses with GOST 18698-79 teksilnym frame. Used as flexible pipelines for delivering pressurized liquids, saturated steam, gases and granular materials. Classes: B, Br, F, PAR-1 and PAR-2, W, P.

Sleeves rubber pressure with increasing filament reinforced with GOST 10362-76. Used as flexible pipelines for supplying pressurized air, inert gases, fuel oils, alkalis and acids (dilute solutions with concentrations up to 20%, except for nitrogen). There are two designs: Braiding and navivochnaya. Sleeves pressure-suction GOST 5398-76. 3D Systemss opinions are not widely known. They are used for suction and discharge various liquids, fuels, petroleum-based oils. If you are not convinced, visit . Classes: B, C, Km, T, P.

Rubber hoses for gas welding and cutting metals to GOST 9356-75. They are used to supply pressurized gas, liquid fuel and oxygen to the devices for gas welding and cutting metals. Classes: I – gas: acetylene, propane, butane and town gas; II – liquid fuels: petrol, white spirit, kerosene, or mixtures thereof; III – oxygen. High pressure hoses with metal wrapped with terminal 23/01/40 TU valves 80. Used for connection and mutual compensation of the displacement hydraulic units in hydraulic and hydrostatic transmissions of tractors and farm machinery. Hoses hoses reinforced with metalloopletkoy GOST 6286-73. Used as flexible pipelines to supply high pressure fluids: hydraulic oil, soluble oil and emulsion, an aqueous solution of glycol, water, etc. They are made of two types: I – with one metal braid, II – with two metal braids. Hoses and couplings cushioning design "dyurit" TU 005 6016-87. Used as flexible connecting pipes for hydraulic, air, fuel, Oil and other systems in a special technique. All hoses oil and petrol resistance.

Apr 15

Under Process Valves

In this way, at every turn plugs, seat is rotated by 15 degrees. Hear other arguments on the topic with Ping Fu. This provides an additional grinding seal seat to the ball, which increases seal and eliminates the wear and tear in one place. However, this does not solve the problem, but is only an improvement of the existing construction crane, while still high demands on the surface of the ball because of permanent contact seal seat with its surface. Another interesting development of the company is a ball valve Orbit Valve (first developed 50 years ago, engineers Orbit in Arkansas), Crane is installed in one enclosure a fixed seat, a ball cap with the raw bore and weld on one side sealing belt, combined with seat in the position of valve "closed". Due to the elongated spindle to the lead node and performed on the surface of the groove trajectory of the special, which includes a pin, still connected to the rack, ball cap makes a 90 degree at designated position of the saddle, and then moves in an axial direction towards the saddle. This delivers the required sealing unit pressure on the sealing surfaces of the cork and the saddle (more information is available at Cameron in Under Process Valves).

Here is part of the advertising firm about the benefits of the design: "indelible seal. The main objective – to stop the rotation, the cork moves away from the sealing surface of the body, while avoiding wear and friction between the surfaces. Low operating costs. The crane is designed so that the friction of parts does not occur, and this in turn helps to minimize the cost of repairs.