Axisymmetric check valves

Осесимметричные клапана — Клапан осесимметричный до Ру350

Axisymmetric axial flow check Valves

Axisymmetric check valves have the lowest coefficient of resistance, characterized by smooth operation in critical conditions, which contributes to trouble-free operation with little wear of parts.
Advantages: low coefficient of resistance, constant flow rate without runout and noise.

Types of axisymmetric valves

The axisymmetric check valve is made in 3 variants of connection to the pipeline:
— Prefabricated inter-flange with matching flanges.
— Flanged.
— Welded.
All 3 options are fully ready for installation.
They are also distributed according to climatic conditions and environment: U1, CL, and UHL.

Technical information

Valve type: Shock-free valve (check valve) Dn (mm.): 15-600, Ru (kgf / cm2): 1.6 — 35 MPa.
The simplicity and reliability of the design ensures smooth operation of the valve in all climatic conditions and pressure environments. The valves are repairable in the field. Vertical and horizontal valve installation.

Body parts

Carbon steels:
Steel 1.0402, С22/Ск22 DIN; EN (EU), 1020 AISI, G10200 UNS (US), Ст. 20 ГОСТ 1050-88
The use temperature of the medium is from -40 to +425 C, the ambient temperature is from -40 to +40 C.

Cold-resistant steels:
Steel 40Mn4 DIN, G10350 (1035) UNS (US), Ст. 09Г2С (RU) — (body parts, pipes, junctions, spigots)
The use temperature of the medium is from -60 to +425 C, the ambient temperature is from -50 to +50 C.

Stainless steels:
Steel X12CrNiTi 18-9 DIN; EN (EU), 321 S31 ANSI, B.S. (US), Сталь 09Г2С (RU) — (body parts, pipes, junctions, spigots).
Температура использования от -196 до +600 С, окружающего среды от -50 до +50 С.

Working Parts

Углеродистые стали:

Carbon steels:
Steel 1.0402, С22/Ск22 DIN; EN (EU), 1020 AISI, G10200 UNS (US), Ст. 20 (RU).
Steel 1.3401 (X120Mn12) DIN, J91171 UNS (US), Ст. 20Х13 (RU).

Cold-resistant steels:
Steel 40Mn4 DIN, G10350 (1035) UNS (US), Ст. 09Г2С (RU)
Steel 1.3401 (X120Mn12) DIN, J91171 UNS (US), Ст. 20Х13 (RU).

Stainless steels:
Steel X12CrNiTi 18-9 DIN; EN (EU), 321 S31 ANSI, B.S. (US), Сталь 09Г2С (RU)
High ductility, heat resistance, high resistance to aggressive and oxidizing environments.

Sealing

To ensure electrical insulation of the flanges from each other, gaskets made of paronite PMB (4 mm) are provided, a coating made of bakelite varnish protects against moisture saturation. Such gaskets can also be made of vinyl plastic (or fluoropolymer). The tightening pins are enclosed in split fluoroplast bushings.

Welding and surfacing

Surfacing with electrodes or welding wire ESAB, OK Weartrode 55, Т-590Н, Castolin-Eutectic, LINCOLN ELECTRIC, ESAB, ASKAYNAK (EU, US), СВ-04х19н19, ЦН-12м ; ЦН-6л ; УОНИ 13/нж (RU).

Rebar flanges

The main applicable flange standards are ASME, ANSI, EN, DIN. All metal products are regulated by special documents, which contain all the basic information about the elements: dimensions, shape, types, types of connecting surface, pressure classes, materials and manufacturing methods.

Mounting elements

Fasteners (stud, nut, washer) are used according to DIN EN ISO standards, depending on the load, climatic and temperature conditions of the pipeline valves.

Paint Job

Special types of primers and paints are used for anti-corrosion protection and long-term protection of metal in temperate and cold climates.

Warranty period

Service life, not less than (years) — 30.
Full service life (cycles) — 3000.
Time to failure of cycles, not less than — 1000.
Warranty operating time of cycles — 10000.

Until the end of 2021, discounts of up to 20% for all customers!

To the attention of consumers

Production and delivery according to TU 3742-001-96231033-2006 in acc. GOST R 53671. Climatic versions and categories according to GOST 15150. Transportation and storage according to GOST 15150-69. Marking according to GOST 4666.