Gate valves steel wedge RTZK
TU 3741-001-71634056-2010
DN 15, 20, 25, 32, 40, 50, 80, 100, 150, 200, 250, 300
PN 1,6; 2,5; 4,0; 6,3; 10,0; 16,0; 20,0; 25,0 MPa
RTZK – steel wedge gate valves with a retractable spindle.
Designed for installation on pipelines as a shut-off device.
RTZK10 – a series of wedge gate valves with forged-welded housings, mounting the oil seal on studs
RTZK14 is a series of wedge gate valves with forged–welded housings, mounting the stuffing box on folding bolts.
RTZK20, RTZK22 – a series of wedge valves with cast housings, mounting the oil seal on studs.
RTZK24 is a series of wedge gate valves with cast housings, mounting the stuffing box on folding bolts.
| Indicator | Meaning | Note |
| Appointment | For installation on pipelines as shut-off devices | |
| Standard for manufacturing | TU 3741-001-71634056-2010 | |
| Type of reinforcement | Shut - off | |
| Type of reinforcement | Steel wedge gate valves with extendable spindle RTZK | RTZK10, RTZK14, RTZK20(22), RTZK24 |
| Sealing class of the shutter | class "A" GOST 9544-2015 | |
| Conducted environment | Water, steam, oil, liquid and gaseous petroleum products, water-gas-oil mixtures, natural and associated gas, including those containing hydrogen sulfide, other media in relation to which the material of valve parts is corrosion-resistant | Specified when ordering. For corrosive media, the concentration of active substances is indicated. |
| Temperature of the conducted medium | from minus 60 ° C to 560 ° C, depends on the material of the valve parts | Specified when ordering, In the absence of requirements, it is supplied according to the technical documentation of RTMT LLC. |
| Climatic design and accommodation category | U1, HL1, UHL1, T1 GOST 15150. Other types of climatic versions and accommodation categories are allowed. | Specified when ordering |
| Category of earthquake resistance | - non-earthquake-resistant design with (up to 6 points inclusive on the MSK-64 scale); - earthquake-resistant design With (over 6 to 9 points inclusive); - performance of increased seismic resistance of the PS (over 9 to 10 points inclusive). | Specified when ordering. In the absence of a requirement, it is supplied in a non-seismic (C0) version |
| Installation position | for manually operated valves – any, for valves with a drive – according to the RE on the drive | |
| Spindle seal | Stuffing box, with packing rings of thermally expanded graphite | |
| Type of management | Manual, electric, pneumatic, hydraulic, remote-controlled drive, "under drive" version | Specified when ordering In the absence of requirements supplied with manual control |
| Connecting dimensions for the drive | according to ST CCBA 062-2009, ISO 5210, GOST 34287 | Specified when ordering. In the absence of a requirement, it is supplied with flanges for the drive according to ST TSKBA 062-2009 |
| Connection to the pipeline | - coupling (G, Rc, K); - flange GOST 33259 versions A, B, C, D, E, F, J, K, L, M - flanged GOST 9399, ANSI/ASME B16.5; - flanged with counter flanges; - for welding into the joint; - coupling for welding. | Specified when ordering. For coupling valves, the size of the connecting thread is indicated, for flanged valves - the flange design, the standard for the mating flanges. For versions for welding and counter flanges, it is possible to perform cutting for a specific pipe. In the absence of requirements for the execution of flanges or cutting for a specific pipe, it is supplied according to the technical documentation of RTMT LLC |
| Type of coating | Factory anti-corrosion coating, coating for above-ground installation, coating for underground installation according to special requirements | Specified when ordering. In the absence of a requirement, it is supplied with a factory anti-corrosion coating |
| Average service life | 20 years |
Reliable steel wedge gate valves are the most popular type of shut–off valves for gas and oil pipelines, sewerage systems, water supply, fire extinguishing.
The RTMT company manufactures and sells steel wedge gate valves of various cross-sections and structural features. We accept orders for wholesale deliveries of shut-off valves of various types and purposes.
Advantages of Steel wedge gate valves
- Small construction length;
- low hydraulic resistance;
- wide range of diameters;
- simplicity of design;
- possibility of use in the most difficult climatic conditions;
- they are more durable and plastic compared to cast iron products;
- the maximum allowable pressure on the models of this group reaches 25 MPa;
- more resistant than cast iron to high temperatures;
- they are made of low-carbon steel, stainless steel gate valves are produced for contact with aggressive media;
- affordable prices.
The principle of operation of wedge valves
The main elements of the valves are the body and the shutter. The shutter, rising to the "open" position, releases a cavity inside the pipeline for the passage of the working medium. Rotation takes place with the help of a spindle that moves the wedge gate to full contact with the angled seats of the housing.
The lower part of the spindle is connected to the shutter, the upper part is connected to the control element (electric drive, steering wheel).
The tightness of the system is maintained by means of an oil seal and a lid.
Use of steel wedge gate valves
The main areas of operation of steel gate valves are pipelines with different media carrying substances such as:
- technical water;
- water vapor;
- oil refining products;
- sewage drains;
- natural gas.
Types of wedge gate valves
Methods of fastening shut-off valves to pipeline systems are different. Taking into account the mounting options , the valves are divided into:
- flanged;
- coupling;
- welded.
Coupling, flange fittings are easy to install in the pipeline system. The welded type is more reliable.
Valves are also classified according to the type of shut-off unit:
- rigid wedge gate – used for the production of large-sized shut-off valves, used in high-pressure communications;
- a two–disc gate is created from two V-shaped locking elements fixed with a screed, fittings with a two-disc gate are cheaper due to low production costs;
- the elastic gate has a V-shaped wedge, which is equipped with an elastic element that increases the tightness of the system.
To buy wedge gate valves, send an application to the RTMT company's e-mail or fill out an order form on our website.
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