Ball flange valves
-
Fig.K110Flanged steel ball valve, ball-type stainless steel 304, PTFE, PN25 -
Fig.K120Ball valve with stainless steel flange, ball-nh steel 304, PTFE, PN16
-
Fig.K122Three-fold stainless steel ball valve, stainless steel 304, PTFE, PN16
-
Fig.K440-FSteel flanged ball valve, ball-nzh steel 304, PPL, PN40
-
Fig.K425-FSteel flanged ball valve, ball-nzh steel 304, PPL, PN25
It is used in water supply and heating systems, boiler rooms, as well as in industrial and oil and gas pipelines at operating pressures of PN16–PN40.
Flanged ball valves catalog
The Ukrainian brand UKSPAR presents a wide range of shut-off devices to solve problems of any complexity. For an overview of the entire line of shut-off valves, see also ball valves of all connection types in the catalog. In the catalog:
- steel valves with a 304 stainless steel ball and PTFE or PPL seal (PN25 and PN40);
- completely stainless steel valves with 304 stainless steel ball and PTFE seal;
- models (PN16) with a three-piece design that allows you to dismantle the internal part of the valve without disassembling the flange connections to the pipeline.
Buyers have the opportunity to choose the optimal model based on the specifics of their engineering facility.
How to choose a flanged ball valve for your tasks
To choose the right equipment, it is necessary to analyze the key parameters of the system:
- Nominal diameter (DN). The size of the passage cross-section of the valve must exactly match the diameter of the main pipe. Also consider the type of passage: full-bore valves (the diameter of the ball hole is equal to the inner diameter of the pipe) provide minimal pressure losses in the system, and standard-bore valves are more compact and economical where these losses are not critical.
- Working environment. Before purchasing, it is important to consider what substance is being transported: water, gas, steam or aggressive chemical compounds.
- Working pressure and temperature. The fittings must have a safety margin that exceeds the maximum performance of the system during peak operating times.
For domestic water supply systems, compact brass models are suitable. Industrial mains require reinforced solutions made of stainless or carbon steel.
Construction and materials
The reliability of the fittings is established at the stage of designing internal components and selecting raw materials.
Ball, stem, seal
The main working element is a ball with a through hole. It rotates around its axis using a stem. To ensure absolute tightness in the closed state, PTFE seats and seals are used. This material withstands friction, does not deform under pressure and is chemically inert. The stem is protected against falling out under the influence of internal pressure. For more loaded modes, PPL seals are used - they are inferior to PTFE in chemical inertness, but they are superior in mechanical resistance to abrasive impurities in the flow.
Steel, stainless steel, brass
Large diameter housings are made of carbon steel - it is durable and can withstand high mechanical loads.
Stainless steel is indispensable in the food, pharmaceutical and chemical industries, it is chemically neutral, does not corrode and works with superheated steam. Brass in flanged design is rare, it is usually characteristic of small diameter coupling products. If a flange connection is required for the installation of fittings for a specific pipeline diameter, also take a look at flange assortment UKSPAR.
Equipment: manual, with gearbox, with drive
The way the valve is controlled depends on its size and frequency of use:
- Manual (lever). Standard option for small diameters, where the operator can shut off the flow manually using a convenient lever handle.
- With gearbox. Installed on large pipe diameters. The mechanical gearbox reduces the effort required to turn the ball, making the control process easy and smooth.
- With drive. Models with electric or pneumatic drive are integrated into automated systems to control the locking unit remotely.
The UKSPAR catalog assortment allows you to choose the optimal solution for both standard pipelines and industrial systems.
Advantages of flange connection for large diameters
Flanged connection withstands higher mechanical loads and higher operating pressure compared to threaded or coupling. That is why flanged design is the standard for medium and large diameters of pipelines, while threaded (coupling) valves are used mainly on compact domestic and small engineering lines. The detachable design allows the valve to be dismantled for inspection or replacement without cutting the pipeline. This is important on industrial highways, where replacing fittings without stopping and disassembling the pipeline section saves maintenance time.
Pipe fittings of the UKSPAR trademark are certified according to the Ukrainian Technical Regulations for Pressure Equipment (certificate of conformity "Ukrsertifikyshn" No. UA.CRT.00034-26), in particular according to the standards DSTU EN 1092-1 (flange connections) and DSTU EN 1983 (steel ball valves) - with a nominal diameter of up to DN1200 and a working pressure of up to PS14 MPa.
Where are they used?
The scope of operation of flanged ball valves covers industry, housing and communal services, and the energy sector. They are installed on water supply mains, in boiler rooms, on natural gas distribution lines, as well as in the oil refining industry.
The flanged ball valve from UKSPAR is the choice of engineers who need durability and safety at critical facilities.