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Клапан предохранительный
Клапан предохранительный

Safety valve

A safety valve is a pipeline valve designed to protect against mechanical destruction of equipment and pipelines by excessive pressure by automatically releasing excess liquid, vapor and gaseous media from systems and vessels with pressure in excess of the established one.

Safety valve for overpressure relief

Safety valves are made of steel grades 20L, 20GL, 12X18N9TL, 12X18N12M3TL with a flanged connection. The connection dimensions and dimensions of the sealing surfaces of the discharge valve flanges correspond to GOST 12815-80.

Climatic version: U1, HL1, UHL1. Operating conditions GOST 15150-69.
Working medium temperature: U1 from -40 C to +425 C, CHL1 from -60 C to +425 C, UHL1 from -60 C to +600 C.

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.

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.

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.

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).

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.

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

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

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, there is a discount of up to 20%

To the attention of consumers!

The manufacturer adjusts the safety valve to the opening start pressure according to the Customer’s specifications without back pressure at the valve outlet.

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