Component parts for gas supply system
POLYETHYLENE & STEEL joint can be used for transportation and gas distribution networks of high and medium pressure, made of polyethylene pipes of types PE-80 and PE-100, of the range SDR 11 and 17,6. Diameter of the joints produced from 20 to 315 mm. POLYETHYLENE & STEEL joints consist of the following elements: polyethylene pipe, steel feed pipe and steel pipe (ferrule). External POLYETHYLENE & STEEL joint is protected with chlorinated rubber paint.
Pedimental connection is used in building of underground burning gases supply systems by means of pressure up to до 0,6 MPa.
Diameter of pedimental connection:
1. Pedimental connection 25/20;
2. Pedimental connection 32/25.
The set consists of:
- brass ball cock;
- adapter Pe/St with the length of polyethylene of 4m;
- aluminium pipe;
- extension anchor with a clamp.
Polyethylene ball cocks have been used in gas supply systems construction more often lately. The main advantage of such cocks in comparison with the traditional stop valves is that they do not need servicing during their operation life. Technical norms regulate the application of switching-off devices in gas supply systems. Switching-off devices for gas supply system, in particular, can be constructed under ground or above the surface with wells. The wells are not desirable on the main, as there are some definite regulations concerning their opening and work in them. This fact complicates greatly the usage of stop valves fixed on the active pipeline; as this unit needs constant attendance it causes problems for the organization.
If stop valves are set above the ground, in conformity with all gas supply technical regulations, the territory is to be fenced about; there are also some requirements to covering. Moreover, the territory for setting stop valves is not always available, as there can be its shortage. Using a ball cock you could avoid all these problems. Such cock is opened and closed with the help of a rod, going up to the surface, it can be dismountable as wells. The handle of the extension rod is installed under the "mat", and the cock itself is welded to the pipe with the help of thermo-resistant unions.
Any supporting piers or wells are not required in this case, the cock installed is in soil. If you compare the expanses for a ball cock with those of a gate valve, Если сравнить затраты на приобретение шарового крана и стальной задвижки, the last one will certainly be cheaper. However, mounting it you will have to take into account the setting of piers or wells, a subballast, cladding and the territory used. Mounting of a polyethylene cock facilitates greatly the process of stop valves erection, buying all required materials and the process of putting the object into operation.
Sale of component parts for gas supply system in Dnepropetrovsk
The prices for the products offered are distribution ones and can vary depending on the prices set by the manufacturing-works. The prices are not very high in comparison with those of the similar products, offered by other suppliers.
The products are available for sale in the warehouse in Dnepropetrovsk city.
|
