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Check valves

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BEST
Check valve ball flange cast iron, DN 50 / ball-steel + NBR / PN16
Fig. C102-50
  • Nominal bore, DN (mm): 50
  • Pressure, Bar: 16
  • Temperature (max), °C: до +80
  • Connection: Flanged
  • Body material: ductile iron GGG50
  • Material of bowl: steel WCB + NBR
  • Working environment: oil products, waste water, air, sewage, water
Check valve ball coupling cast iron, DN 25 / ball-steel + NBR / PN16
Fig. C302-25
  • Nominal bore, DN (mm): 25
  • Pressure, Bar: 16
  • Temperature (max), °C: до +80
  • Connection: Threaded
  • Body material: grey cast iron GG25
  • Material of bowl: steel WCB + NBR
  • Working environment: water, air, waste water, sewage, oil products
BEST
Check valve spring-loaded flange cast iron, DN 50 / plate-cast iron GG25 / EPDM / PN16
Fig. C101-50
  • Nominal bore, DN (mm): 50
  • Pressure, Bar: 16
  • Temperature (max), °C: до +120
  • Connection: Flanged
  • Body material: grey cast iron GG25
  • Seal body: EPDM
  • Plate: grey cast iron GG25
  • Working environment: air, water
Double check valve cast iron wafer type, DN 50 / leaf-cast iron GGG40 / EPDM / PN16
Fig. C201-50
  • Nominal bore, DN (mm): 50
  • Pressure, Bar: 16
  • Temperature (max), °C: до +120
  • Connection: Inter-flange
  • Body material: grey cast iron GG25
  • Seal body: EPDM
  • Flap: ductile iron GGG40
  • Working environment: water, air
Check valve double-leaf cast iron, DN 40 / leaf-SS steel 304 / VITON / PN16
Fig. C202-40
  • Nominal bore, DN (mm): 40
  • Pressure, Bar: 16
  • Temperature (max), °C: до +150
  • Connection: Inter-flange
  • Body material: grey cast iron GG25
  • Seal body: VITON
  • Flap: SS AISI304
  • Working environment: water, air, oil products
Check valve double-leaf stainless steel, DN 50 / leaf-SS steel 316 / VITON / PN25
Fig. C221-50
  • Nominal bore, DN (mm): 50
  • Pressure, Bar: 25
  • Temperature (max), °C: до +150
  • Connection: Inter-flange
  • Body material: SS AISI316
  • Seal body: VITON
  • Flap: SS AISI316
  • Working environment: water, air, gas, oil products, mildly aggressive environments
Check valve inter-flange steel, DN 40 / disc-SS steel 304 / NBR / PN16
Fig. C212-40
  • Nominal bore, DN (mm): 40
  • Pressure, Bar: 16
  • Temperature (max), °C: до +80
  • Connection: Inter-flange
  • Body material: steel WCB
  • Disc material: SS AISI304
  • Seal body: NBR
  • Working environment: air, water, oil products, gas
Check valve inter-flange stainless, DN 40 / disk-SS steel 316 / VITON / PN16
Fig. C222-40
  • Nominal bore, DN (mm): 40
  • Pressure, Bar: 16
  • Temperature (max), °C: до +150
  • Connection: Inter-flange
  • Body material: SS AISI316
  • Disc material: SS AISI316
  • Seal body: VITON
  • Working environment: water, air, gas, oil products, mildly aggressive environments
Check valve rotary flange cast iron, DN 50 / disc-cast iron GG25 / PN16
Fig. C103-50
  • Nominal bore, DN (mm): 50
  • Pressure, Bar: 16
  • Temperature (max), °C: до +220
  • Connection: Flanged
  • Body material: grey cast iron GG25
  • Disc material: grey cast iron GG25
  • Seat: bronze
  • Working environment: water, air, steam, oil products
Rotary check valve with counterweight flange cast iron, DN 350 / disc-cast iron GGG50 / PN16
Fig. C107-350
  • Nominal bore, DN (mm): 350
  • Pressure, Bar: 16
  • Temperature (max), °C: до +220
  • Connection: Flanged
  • Body material: ductile iron GGG50
  • Disc material: ductile iron GGG50
  • Working environment: water, air, gas, steam, oil products
Check valve lifting flange cast iron, DN 15 / plate-stainless / PN16
Fig. C104-15
  • Nominal bore, DN (mm): 15
  • Pressure, Bar: 16
  • Temperature (max), °C: до +220
  • Connection: Flanged
  • Body material: grey cast iron GG25
  • Plate: stainless steel
  • Seat: stainless steel
  • Working environment: water, air, steam, oil products
Check valve lifting flange steel, DN 50 / plate-stainless / PN40
Fig. C115-50
  • Nominal bore, DN (mm): 50
  • Pressure, Bar: 40
  • Temperature (max), °C: до +350
  • Connection: Flanged
  • Body material: steel WCB
  • Plate: stainless steel
  • Seat: stainless steel
  • Working environment: water, air, gas, steam, oil products
Check valve rotary flange cast iron, DN 50 / plate-steel + NBR / NBR / PN16
Fig. C105-50
  • Nominal bore, DN (mm): 50
  • Pressure, Bar: 16
  • Temperature (max), °C: до +80
  • Connection: Flanged
  • Body material: ductile iron GGG40
  • Seal body: NBR
  • Plate: steel WCB + NBR
  • Working environment: water, air, oil products, sewage, waste water
Check valve spring-loaded stainless steel inter-flange / plate-SS steel 316 / PN25
Fig. C223/25
  • Nominal bore, DN (mm): from DN15 to DN300
  • Pressure, Bar: 25
  • Temperature (max), °C: up to +300
  • Connection: Inter-flange
  • Body material: SS AISI316
  • Plate: SS AISI316
  • Spring: SS AISI316
  • Working environment: mildly aggressive environments
Check valve spring-loaded stainless steel inter-flange, DN 15 / plate-SS steel 316 / PN40
Fig. C223-15
  • Nominal bore, DN (mm): 15
  • Pressure, Bar: 40
  • Temperature (max), °C: до +250
  • Connection: Inter-flange
  • Body material: SS AISI316
  • Plate: SS AISI316
  • Spring: SS AISI316
  • Working environment: water, air, gas, steam, oil products, mildly aggressive environments
Check valve rotary coupling stainless steel, DN 15 / plate-SS steel 304 / PN16
Fig. C321-15
  • Nominal bore, DN (mm): 15
  • Pressure, Bar: 16
  • Temperature (max), °C: до +250
  • Connection: Threaded
  • Body material: SS AISI304
  • Stock: SS AISI316
  • Plate: SS AISI304
  • Working environment: air, mildly aggressive environments, oil products, steam, gas, water
Check valve rotary coupling stainless steel, DN 15 / plate-SS steel 316 / PN16
Fig. C321-I-15
  • Nominal bore, DN (mm): 15
  • Pressure, Bar: 16
  • Temperature (max), °C: до +250
  • Connection: Threaded
  • Body material: SS AISI316
  • Stock: SS AISI316
  • Plate: SS AISI316
  • Working environment: oil products, air, steam, water, gas, mildly aggressive environments
Brass check valve, DN 15 / plastic valve / EPDM / PN10
Fig. C330-15
  • Nominal bore, DN (mm): 15
  • Pressure, Bar: 10
  • Temperature (max), °C: до +90
  • Connection: Threaded
  • Body material: brass
  • Seal body: EPDM
  • Working environment: air, water
Check valve, socket weld, stainless steel, DN 15 / plate-SS304 / PTFE / PN16
Fig. C322-15
  • Nominal bore, DN (mm): 15
  • Pressure, Bar: 16
  • Temperature (max), °C: до +230
  • Connection: Threaded
  • Body material: SS AISI304
  • Seal body: PTFE
  • Plate: SS AISI304
  • Working environment: water, air, oil products, mildly aggressive environments
Check valve ball flange cast iron, DN 65 / ball-steel + NBR / PN16
Fig. C102-65
  • Nominal bore, DN (mm): 65
  • Pressure, Bar: 16
  • Temperature (max), °C: до +80
  • Connection: Flanged
  • Body material: ductile iron GGG50
  • Material of bowl: steel WCB + NBR
  • Working environment: water, air, waste water, sewage, oil products


Best check valves from UKSPAR

A non-return valve is used to control the movement of the working medium in pipes. The fittings allow water (or other medium) to pass in the right direction, and block its return. Check valves are often mounted in the following locations:

  • sewerage;
  • piping;
  • gas pipeline;
  • heating network;
  • oil pipeline;
  • wells;
  • pumps.

  • Reliability, durability and ease of use are the main advantages of a back pressure valve.


    How a non-return valve works

    Check valves operate under the pressure of the moving stream. When the medium flows in the right direction, the pressure rises and the valve opens. If the working medium stops flowing or starts to flow in the opposite direction, the through hole is automatically closed by means of a shutter. The non-return valve for water (and other working media) performs a number of functions:

  • stabilizes the pressure in the working system;
  • minimizes the risk of leaks and water hammer;
  • prevents the flow from changing course, which can lead to violation of the rules of operation of the equipment and even breakage.

  • The high pressure check valve prevents leakage of the working flow in the event of a blockage in the pipeline or its malfunction (for example, a clogged sewer). It works automatically, without human intervention, and can last for decades, subject to operating standards.


    What is a water return valve

    You can buy a check valve of different types - with different types of connection, body material, and also the type of working medium.

    Type of connection

    1. Flanged. It is mounted on a pipe through a flange with a sealant. It has high strength, suitable for large pipelines and wells, more often used in industry.
    2. Wafer. It is mounted on a pipe between its flanges. Easy to install and dismantle, takes up little space, suitable for small diameter piping systems.
    3. Coupling (threaded). It is mounted on a pipe by means of a carving (coupling). Compact and neat, commonly used in the household.

    Body Material

    1. Ductile iron. Among the advantages - heat resistance, ease of repair, low price. Among the minuses - the risk of rust, a lot of weight.
    2. Brass. Among the advantages - stainless surface, long service life, low cost. Among the minuses is a small variability in size (on average, DN up to 10 cm) and operating temperatures (on average, up to 150-180 ° C).
    3. Steel. Among the advantages - resistance to different temperature conditions, high loads and pressure drops. Among the minuses is the risk of rust.
    4. Stainless steel. Among the advantages are the variability of application, the best indicators of strength and durability. Among the minuses is the high price.

    Working substances

    Among the most common:

  • water;
  • air;
  • gas;
  • sewage;
  • oil products;
  • steam;
  • mildly aggressive environments;
  • waste water.

  • The best water check valves in the UKSPAR brand catalog

    The Ukrainian manufacturer UKSPAR offers not only to buy a check valve of different types, sizes and materials, but also safety valve. The company's catalog contains high-quality fittings, which have certificates of conformity and a guarantee. The price of the check valve is lower than that of other brands, and delivery is possible anywhere in Ukraine.

    Attention!
    This catalog presents the current technical characteristics of UKSPAR products.
    The manufacturer reserves the right to make changes to the design and technical parameters of products without notice to the consumer.


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