Reverse valves
In order for the working medium inside the pipeline communications to move only in a given direction, reverse valves are used. In case of a change in the vector of movement of liquid or gas, the valve closes the cross-section of the line independently. The inclusion of a reverse gate in the main line makes it possible to reliably protect all elements of the system (equipment, devices, aggregates, pumps, pipes) from fluctuations in the parameters of the technological process.
Advantages
The strengths of the reverse valves:
- the use of hard wear-resistant materials with anticorrosive properties as a material for the manufacture of seals;
- high quality steel housing, despite its small size and comparative lightness;
- solidity (the product is made without welds);
- easy to install, maintain and repair;
- the availability of the option of a separate order of the shutter assembly and the ability to quickly replace a worn element without fitting;
- several variants of the climatic design of the product, which allows you to choose the right model depending on the operating conditions;
- the possibility of manufacturing a shutter according to an individual project.
Indicator | Meaning | Note |
Appointment | To prevent the backflow of the medium in the pipeline | |
Standard for manufacturing | TU 3742-004-71634056-2010 | |
Type of reinforcement | Reverse | |
Type of reinforcement | Reverse shutter RTZO | RTZO11 |
Sealing class of the shutter | class "A, B, C, D" according to GOST 9544 depending on PN | |
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 the 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 delivered 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 version of CO (up to 6 points inclusive on the MSK–64 scale); - earthquake-resistant version of C (over 6 to 9 points inclusive); - performance of increased seismic resistance of 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 | On horizontal, lifting and vertical (with the medium supply from the bottom up by the arrow on the housing) pipeline sections | |
Type of management | Automatic under the influence of the conducted environment | |
Connection to the pipeline | Flanged, coupling type, with flanges according to GOST 33259 type 11 | Specified when ordering. It is possible to perform cutting for a specific pipe. In the absence of requirements for 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 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 |
The check valve refers to protective fittings designed for installation on pipes in order to prevent the flow from moving in the wrong direction. The product has a simple design, triggering automatically. Check valves from RTMT LLC are excellent for ensuring the safety of pipeline networks in case of malfunctions of pumping equipment or in case of extreme pressure drop on adjacent lines of the system.
Application areas
Check valves are included in the complete set of various equipment and networks:
- lines for the transportation of water, gas, heat, aggressive media;
- ventilation and fire extinguishing systems;
- industrial and household equipment.
Thanks to a well-thought-out design, reverse-acting valves are allowed to be installed on vertical, inclined and horizontal trunk lines. The main thing is to observe the direction of movement of the working medium according to the pointer on the housing. Products of this type from LLC "RTMT" are designed for a cross-section of 40-250 mm and maintain their performance at temperatures up to +560 degrees and pressure up to 27 MPa.
Design features
The structure of the shutter includes a durable steel body, with a built-in disc flap. When the pipe is empty, the element is pressed tightly against the seat. After the start of the movement of the working medium, the locking part begins to turn around the axis. Upon completion of the flow, it moves to its starting position under the influence of gravity, preventing the possibility of moving the working medium in the opposite direction.
The main types of reverse shutter:
- Simple ones. They function due to their own weight and inertia of the flow.
- Unstressed. The complete set of fittings includes dampers and loads that reduce the impact load on the landing seat.
To find out the cost or order a suitable version of the reverse shutter at the manufacturer's price, call our manager by phone feedback.
Why it is profitable to work with us
- Russian manufacturer
They trust us
Gazprom, Rosneft, Lukoil, Sibur, Transneft.- Accreditation in systemsTransneft, Sibur, Gazpromneft
- We work according to standards and uniform technical requirementsETT Rosneft, Nizhnekamsk Neftekhim
- All products are confirmed by tests and quality certificates.
- Product development for your unique requirements