Safety valve sppk4r 150 16m instructions. Spring safety valve SPPK for water and gas: technical characteristics. s6nzh technical characteristics

Direct acting spring safety valves SPPK4, SPPK4R The direction of medium supply is under the spool. The force of the compressed spring presses the spool against the seat; when the pressure of the working medium exceeds the set value, an oppositely directed force acts on the spool, which compresses the spring and opens a passage for relieving the working medium. After the pressure in front of the valve decreases to the return pressure, the spool, under the action of the spring force, is again pressed against the seat, stopping the discharge of the medium.

Safety valves are designed for liquid and gaseous, chemical or petroleum working media. Tightness standards in the valve according to GOST 9789-75.

Safety valves are designed to protect equipment from unacceptable excess of the set pressure. They are used in tanks, boilers, containers, vessels and pipelines for automatic discharge of the working medium into the atmosphere or outlet pipeline. After the pressure decreases to the required limit, the safety valve stops discharging the medium. Calculation of throughput is carried out according to GOST 12.2.085.

the valves are marked as SPPK4R-100-16, where the alphanumeric designation means the following:

SPPK - special spring safety valve;

4 - valve modification number;

P - indicates the presence of a manual override lever (if it is absent, the letter is not indicated);

100 - nominal diameter at the inlet in mm (DN);

16 - working pressure in kgf/cm2 (PN);

Safety valves according to the traditional “table of figures” have a symbol of type 17s17nzh or 17s25nzh, where:

17 - designation of the type of fittings - safety valve;

c - designation of valve body material (steel 20L);

17 or 25 - conventional numbers indicating the valve modification number;

NZh - designation of valve seat material.

Valves of types SPPK and SPPK4R belong to full-lift, on-off-action spring safety valves of the closed type, but operate as full-lift valves only on gaseous (vapor) media. When operating on liquid (incompressible) media, the throughput of valves such as SPPK and SPPK4R is 4-8 times less than when operating on gaseous media.

Safety valves for checking serviceability and purging in working condition, valves of the SPPK4R type have a special lever for manually opening the “manual detonation” device. SPPK4 type valves do not have a lever.

Spring flanged safety valves made of steel 20L with a device for forced opening

Working medium - water, air, steam, ammonia, natural gas, oil, petroleum products, liquid and gaseous hydrocarbons and media not aggressive to 20L steel, with temperatures from minus 40C to plus 425C. The minimum ambient temperature during operation is minus 40C.

Spring flanged safety valves made of steel 20L without a device for forced opening

Climatic version - U1 GOST 15150;

Purpose and scope - for automatic release of the medium when the pressure increases above the set one;

Working medium - water, air, steam, ammonia, natural gas, oil, petroleum products, liquid and gaseous hydrocarbons and media that are not aggressive to 20L steel, with temperatures from minus 40C to plus 425C. The minimum ambient temperature during operation is minus 40C.

Spring flanged safety valves made of steel 12Х18Н9ТЛ with a device for forced opening

Climatic modification - UHL1 according to GOST 15150;

Purpose and scope - for automatic release of the medium when the pressure increases above the set one;

Spring flanged safety valves made of steel 12Х18Н9ТЛ without device for forced opening

Climatic modification - UHL1 according to GOST 15150;

Purpose and scope - for automatic release of the medium when the pressure increases above the set one;

Working medium - water, air, steam, ammonia, wet natural gas, petroleum products containing hydrogen sulfide up to 0.1%, liquid and gaseous hydrocarbons, petrochemical media with temperatures from minus 60C to plus 600C. The minimum ambient temperature is minus 60C.

When ordering safety valves, you must specify:

Product name, designation;

Nominal size (nominal diameter) (DN, mm);

Nominal (conditional) pressure (PN, kgf/cm2);

Opening start pressure (Рн.о, kgf/cm2) or spring number;

Execution by material;

The need for a manual opening device.

You can order direct-acting spring safety valves SPPK4, SPPK4R, delivery times using the order form or contact information. Upon request we will provide: diagram, passport, certificate, permit.

SPPK- reset spring safety valves are designed to protect various industrial equipment from unacceptable excess of the set pressure. SPPK It is used in industrial tanks, hot water and other boilers, technical tanks and pipelines for automatic discharge of the working medium into the atmosphere (gas, steam) or outlet pipeline (liquid). After the pressure decreases to the required limit, the safety valve stops the discharge. Calculation of throughput is carried out according to GOST 12.2.085.

Safety valve range

Safety valves SPPK are made of steel grades 20L, 20GL, 12Х18Н9ТЛ, 12Х18Н12М3ТЛ with a flange connection, with or without a PU switching device for forced opening. Safety relief valves are designed for liquid and gaseous, chemical or petroleum working media, the tightness complies with TU 3742-004-07533604-95.
Valve closing pressure - Рз not less than 0.8 Рн.
Рн - setting pressure (the highest, excess pressure at the inlet to the valve, at which the specified tightness in the valve is ensured).
The pressure at full opening of the valves is:
- (Рн+0.5) kgf/cm 2 - at setting pressure from 0.5 to 3 kgf/cm 2;
- 1.15 pH kgf/cm 2 - at a setting pressure above 3 kgf/cm 2 to 60 kgf/cm 2 ;
- 1.1 pH kgf/cm 2 - at a setting pressure above 60 kgf/cm 2.
Set pressure (Rust) is a preset pressure at the inlet to the relief valve, at which the valve spool begins to rise and the valve opens. The manufacturer adjusts the safety valve to the opening pressure without backpressure at the valve outlet (the test medium is discharged into the atmosphere). When ordering, it is necessary to indicate the opening pressure (set pressure) to which the valve must be adjusted; it is also necessary to take into account the effect of back pressure, if it is present in the system at the outlet of the valve.
Valves with a bellows are a balanced type mechanism, which compensates for the effect of back pressure at the outlet of the valve. The bellows also protects the relief valve spring from the harmful effects of the working environment, increased or decreased temperature of the working environment. Bellows valves made of steel 12Х18Н9ТЛ are intended for working environments with temperatures up to minus 1100C.
Depending on the steel grade, relief safety valves are manufactured in two versions:
1. body - steel 20L, spool, seat - made of steel 20Х13 (type 17с..У1);
2. body - steel 12Х18Н9ТЛ, spool, seat - made of steel 12Х18Н9Т with surfacing TsN-12M (type 17нж..УХЛ1);
3. body - steel 20GL, spool, seat made of steel 12Х18Н9ТЛ with surfacing TsN-12M (type 17ls..HL1);
4. body - steel 12Х18Н12М3ТЛ, spool, seat - made of steel 10Х17Н13М3Т with surfacing TsN-12M (type 28нж..УХЛ1).
The spring in all versions is manufactured in accordance with GOST 16118-70 from steel 50HFA.
To check the proper operation of safety valves in working order SPPK R have a device for manual opening and purging. Valves SPPK- without a device for manual opening.
The connecting dimensions and dimensions of the sealing surfaces of the relief valve flanges comply with GOST 12815-80.
Valves DN 25 mm PN 100 kgf/cm2 are manufactured with threaded end connection: M48x2 at the inlet, M56x2 at the outlet.
When ordering safety valves, you must specify:
- product name, designation,
- nominal size (nominal diameter) (DN, mm),
- nominal (conditional) pressure (PN, kgf/cm2),
- opening pressure (Рн.о, kgf/cm2) or spring number,
- execution according to the material,
- the need for a device for manual opening.
Example of designation when ordering (and in other documentation) a valve DN 50 mm PN 40 kgf/cm2 made of steel 12Х18Н9ТЛ with manual opening, opening pressure Рн.о 14 kgf/cm2: Safety valve SPPK 4R-50-40 DN 50 mm PN 40 kgf/cm2 Рн.о 14 kgf/cm2 17нж25нж

Spring safety valve SPPK for water and gas: technical characteristics

Indicators for the purpose of safety valves

Design of safety valve body flanges

Application of pressure springs for safety valve settings

Direct acting spring safety valves SPPK4, SPPK4R, the direction of medium supply is under the spool. The force of the compressed spring presses the spool against the seat; when the pressure of the working medium exceeds the set value, an oppositely directed force acts on the spool, which compresses the spring and opens a passage for relieving the working medium. After the pressure in front of the valve decreases to the return pressure, the spool, under the action of the spring force, is again pressed against the seat, stopping the discharge of the medium.

Safety valves are designed for liquid and gaseous, chemical or petroleum working media. Tightness standards in the valve according to GOST 9789-75.

Safety valves are designed to protect equipment from unacceptable excess of the set pressure. They are used in tanks, boilers, containers, vessels and pipelines for automatic discharge of the working medium into the atmosphere or outlet pipeline. After the pressure decreases to the required limit, the safety valve stops discharging the medium. Calculation of throughput is carried out according to GOST 12.2.085.

the valves are marked as SPPK4R-100-16, where the alphanumeric designation means the following:

SPPK - special spring safety valve;

4 — valve modification number;

P - indicates the presence of a manual override lever (if it is absent, the letter is not indicated);

100 — nominal diameter at the inlet in mm (DN);

16 — working pressure in kgf/cm2 (PN);

Safety valves according to the traditional “table of figures” have a symbol of type 17s17nzh or 17s25nzh, where:

17 — designation of the type of fittings - safety valve;

c — designation of valve body material (steel 20L);

17 or 25 - conventional numbers indicating the valve modification number;

NZh - designation of valve seat material.

Valves of types SPPK and SPPK4R belong to full-lift, on-off-action spring safety valves of the closed type, but operate as full-lift valves only on gaseous (vapor) media. When operating on liquid (incompressible) media, the throughput of valves such as SPPK and SPPK4R is 4-8 times less than when operating on gaseous media.

Safety valves for checking serviceability and purging in working condition, valves of the SPPK4R type have a special lever for manually opening the “manual detonation” device. SPPK4 type valves do not have a lever.

Spring flanged safety valves made of steel 20L with a device for forced opening

Working medium – water, air, steam, ammonia, natural gas, oil, petroleum products, liquid and gaseous hydrocarbons and media not aggressive to 20L steel, with temperatures from minus 40C to plus 425C. The minimum ambient temperature during operation is minus 40C.

Spring flanged safety valves made of steel 20L without a device for forced opening

Climatic version - U1 GOST 15150;

Purpose and scope - for automatic release of the medium when the pressure increases above the set one;

Working medium – water, air, steam, ammonia, natural gas, oil, petroleum products, liquid and gaseous hydrocarbons and media that are not aggressive to 20L steel, with temperatures from minus 40C to plus 425C. The minimum ambient temperature during operation is minus 40C.

Spring flanged safety valves made of steel 12Х18Н9ТЛ with a device for forced opening

Climatic version - UHL1 according to GOST 15150;

Purpose and scope - for automatic release of the medium when the pressure increases above the set one;

Spring flanged safety valves made of steel 12Х18Н9ТЛ without device for forced opening

Climatic version - UHL1 according to GOST 15150;

Purpose and scope - for automatic release of the medium when the pressure increases above the set one;

Working medium – water, air, steam, ammonia, wet natural gas, petroleum products containing hydrogen sulfide up to 0.1%, liquid and gaseous hydrocarbons, petrochemical media with temperatures from minus 60C to plus 600C. The minimum ambient temperature is minus 60C.

When ordering safety valves, you must specify:

— product name, designation;

— nominal size (nominal diameter) (DN, mm);

— nominal (conditional) pressure (PN, kgf/cm2);

— opening pressure (Рн.о, kgf/cm2) or spring number;

— execution according to the material;

- the need for a device for manual opening.

You can order direct-acting spring safety valves SPPK4, SPPK4R, delivery times can be found usingor contact information. Upon request we will provide: diagram, passport, certificate, permit.