Order and we will deliver. OOO "pkf gazapparat" gas equipment Kpz valve v 1 200 from the manufacturer

Characteristics

Description

Valve reliability indicators:

• mean time between failures, hours, not less than - 40000;
• average service life, years, not less than 30.
• service life, years - 40.

After the average service life, further operation of the valve is allowed after diagnosis.

Purpose of the product

Safety shut-off valves KPZ are designed to automatically stop the gas supply to consumers when the specified values ​​of the controlled gas pressure increase or decrease.

The valve complies with the requirements of TU 4859-024-36214188-2000,

technical regulations Customs Union TR CU 016/2011 "On the safety of devices operating on gaseous fuel", TR TS 010/2011 "On the safety of machinery and equipment", the requirements of Federal norms and rules in the field of industrial safety"Safety Rules for Gas Distribution and Gas Consumption Networks", SP 62.13330.2011.

The valve is manufactured in the following versions:

• with nominal diameter DN 50, DN 100, DN 200 mm;
• with a maximum working pressure of 1.2 MPa;
• low controlled pressure (H);
• high controlled pressure (B);
• with the controls of the control mechanism located on the left in the direction of the gas flow (basic version);
• with the controls of the control mechanism located on the right in the direction of the gas flow (version -01).

At the request of the customer, the valve can be equipped with a trigger sensor.

1 - body; 2 - valve; 3 - axis; 4.5 - springs; 6.16 - levers; 7 - control mechanism; 8 - membrane; 9 - stock; 10.11 - springs; 12 - emphasis; 13.14 - bushings; 15 - tip; 17 - bar

Figure 1. Safety shut-off valve for low controlled pressure

Figure 2. Safety shut-off valve of high controlled pressure

Valve principle

The valve works as follows.

Controlled pressure is applied to the submembrane cavity of the control mechanism, ensuring the tip is in the middle position. When the pressure in the submembrane cavity rises or falls above the setting limits, the tip moves in one direction or another, and the stop mounted on the lever disengages from the tip, releases the levers connected to each other and allows the axis to turn, while the force holding the tip in a vertical position, should be within 0.2 ... 0.5N. If necessary, it is adjusted by moving the bar along the lever.

The force from the action of the springs is transferred to the valve, and the valve shuts off the gas flow.

Bringing the valve into working condition after operation is done manually by turning the levers until they are fixed with the tip, and the valve is held in the open position.

1. Purpose of the product

1.1. The safety shut-off valve KPZ is designed to automatically stop the supply of non-aggressive hydrocarbon gases to consumers when the controlled gas pressure rises and falls above the specified values.

1.2. KPZ safety shut-off valves are manufactured with nominal bore DN 50 and DN 100 mm of low, medium or high controlled pressure with control mechanism levers located on the left or right in the direction of gas flow.

1.3. Type of climatic version UHL2 GOST 15150-69, at ambient temperature: from 45°С to +40°С.

2. Specifications

The main types (versions), parameters and dimensions are given in tables 1, 2.

Table 1

table 2

Attention! There may be some differences in the valve from the proposed description and drawing, as the company is constantly working on improving the design.

3. Completeness

The delivery set of the valve must be agreed with the customer and correspond to the set specified in Table 3.

Table 3

4. Device and principle of operation

4.1. Valve device.

The safety shut-off valve KPZ, in accordance with Figure 1, has a flanged body 1. Inside the body there is a seat, which is blocked by a valve 2 with a seal. Valve 2 is fastened to axis 3, which is located in housing 1. Springs 5 ​​are installed on axis 3, one end of which rests against housing 1, the other against valve 2. At the end of axis 3, which extends outwards, a lever 6 is rigidly fixed, which rests against lever 16.

The control mechanism 7 is fixed on the body 1, which has a membrane 8, a rod 9 and a tip 15 rigidly fixed on the rod 9.

The tip 15 enters the fastening with the stop 12 of the lever 16 and prevents it from turning. The membrane is balanced by controlled pressure and by springs 10 and 11, the forces of which are regulated by bushings 13 and 14.

1 - body; 2 - valve; 3— axis; 4, 5 - springs; 6, 16 - levers; 7 - control mechanism; 8 - membrane; 9 - stock; 10, 11 - springs; 12 - emphasis; 13, 14 - bushings; 15 - tip; 17 - strap.

Table 4

4.2. The principle of operation of the valve.

The valve works as follows.

Controlled pressure is applied to the submembrane cavity of the control mechanism 7, causing the tip 15 to be in the middle position. With an increase or decrease in pressure in the submembrane cavity beyond the setting limits, the tip 15 moves in one direction or another, and the stop 12 mounted on the lever 16 disengages from the tip 15, releases the interconnected levers 16 and 6 and enables axis 3 turn, while the force holding the tip 15 in a vertical position should be in the range of 0.2 ... 0.5 N. If necessary, it is adjusted by moving the bar 17 along the lever 16.

The force from the action of springs 4 and 5 is transferred to valve 2, and valve 2 closes the gas passage.

Bringing the valve 2 into working condition after operation is done manually by turning the levers 6 and 16 until they are fixed with the tip 15, and the valve 2 is held in the open position.

5. Indication of security measures

5.1. Installation and operation of valves must be carried out in accordance with the requirements of GOST 12.2.003-91, GOST 12.2.063-81, "Safety Rules in gas industry”, approved by the Gosgortekhnadzor of the Russian Federation, and section SNiP 2.04.08-87, as well as this passport.

5.2. The valves must be installed so that the direction of gas flow matches the direction of the arrow on the valve body.

5.3. Valves during operation do not provide negative influence on the environment.

6. Preparation of the product for work

6.1. Preparing the product for installation.

6.1.1. Unpack the valve, remove the transport plugs.
6.1.2. To depreserve the surfaces of the valve parts from lubrication.
6.1.3. Check the valve by visual inspection for the absence of mechanical damage.

6.2. Placement and installation.

6.2.1. The valve must not be installed in environments that are corrosive to steel, rubber and zinc coatings.
6.2.2. The valve is installed in front of the pressure regulator on a horizontal or vertical section gas pipeline. The gas inlet must correspond to the arrow on the housing.
6.2.3. The impulse piping should be connected to the inlet gas line downstream of the regulator and should, if possible, slope upwards away from it and have no areas where condensate can accumulate.
6.2.4. Installation and activation of the valve must be carried out by a specialized construction and installation and operating organization in accordance with approved project, specifications for the production of construction and installation works, as well as this passport.
6.2.5. The valve after adjustment by the consumer to the required response pressure must be sealed.

7. How to work

7.1. Upon completion of the installation of the valve, it should be adjusted to the operating parameters.

7.3. First, the valve is adjusted to the upper limit of operation by changing the tension of the spring 11 by rotating the sleeve 14.
During adjustment, the pressure in impulse tube maintain slightly below the set upper limit and then slowly increase the pressure and verify that the valve operates at the set upper limit.

7.4. When adjusting the lower limit of the valve actuation, the rotation of the sleeve 13 changes the tension of the spring 10. During the adjustment, the pressure in the impulse tube should be maintained slightly above the set lower limit, and then slowly reduce the pressure and make sure that the valve operates at the set lower limit.

7.5. After completing the adjustment, increase the pressure in the impulse tube and make sure that the valve operates again at the set upper limit.

8. Maintenance

8.1. The maintenance of the valve must be carried out according to the schedule.

8.2. A technical inspection and check of the valve actuation setting should be carried out once every two months, including once during routine repairs.

8.3. Scheduled preventive maintenance of the valve must be carried out at least once a year.

8.4. List of works performed during maintenance, is shown in Table 4.

9. Possible malfunctions and ways to eliminate them

9.1. Possible malfunctions and ways to eliminate them are given in table 5.

Table 5

10. Transportation

10.1. Packaged valves can be transported by any mode of transport, except for sea, in accordance with the rules for the transportation of goods in force for this type of transport, according to storage conditions group 7 of GOST 15150-69.

10.2. The valves shall be stored in packaged form according to storage conditions group 3 of GOST 15150-69.

10.3. During storage, boxes with valves may be stacked in no more than three tiers.

10.4. During long-term storage in a warehouse, valves should be re-preserved once a year with lubricants for products of group II according to the protection option VZ-1 GOST 9.014-78.
Shelf life is not more than three years.

10.5. It is allowed to transport valves in universal containers without shipping containers with stacking of products in rows, separating each row with plywood, boards, etc.

12. Manufacturer's (supplier's) warranties

The manufacturer guarantees the conformity of the safety valve shut-off bullpen requirements of technical specifications and trouble-free operation of the valve within 12 months from the date of sale to the consumer, subject to the rules of transportation, storage and operation, but not more than 18 months from the date of manufacture.

Safety shut-off valves KPZ-50, KPZ-100

Purpose of the product

Designed to automatically stop the supply of non-aggressive hydrocarbon gases to consumers when the controlled pressure rises and falls above the specified limits. Manufactured with nominal bore D at 50 and 100 mm low, medium or high controlled pressure.

Controlled environment - natural gas according to GOST 5542-87.

Connection - flange according to GOST 12820-80.

Specifications

Device and principle of operation

The valve has a cast iron flanged body 1 (see figure). Inside the body there is a seat, which is closed by valve 2 with rubber seal. Valve 2 is fixed on axis 3, which is located in housing 1. Springs 4, 5 are installed on axis 3, one end of which rests against housing 1, the other against valve 2. At the end of axis 3, which goes out, levers 6 are rigidly fixed, which rests against the lever 16. On the body 1 there is a control mechanism 7, which has a membrane 8, a rod 9 and a tip 15 rigidly fixed on the rod 9. The tip 15 engages with the stop 12 of the lever 16 and prevents it from turning. The membrane is balanced by controlled pressure and springs 10, 11, the forces of which are regulated by bushings 13, 14. Controlled pressure is supplied to the submembrane cavity of the control mechanism 7, causing the tip 15 to be in the middle position. With an increase or decrease in pressure in the submembrane cavity beyond the setting limits, the tip 15 moves, which releases the interconnected levers 16, 6 and allows the axis 3 to turn. The force from the action of springs 4, 5 is transferred to valve 2, and valve 2 closes the gas passage. Bringing the valve 2 into working condition after operation is done manually by turning the levers 6, 16 until they are fixed with the tip 15, and the valve 2 is held in the open position.

Safety shut-off valve KPZ:
1 - body; 2 - valve with rubber seal; 3 - axis; 4, 5 - spring; 6 - lever; 7 - control mechanism; 8 - membrane; 9 - stock; 10, 11 - spring; 12 - emphasis; 13, 14 - sleeve; 15 - tip; 16 - lever

Type: safety shut-off valve.

The KPZ valve is designed to automatically stop the supply of gases to consumers when the controlled gas pressure rises or falls from the specified limits.

The KPZ safety shut-off valve is manufactured with nominal bore DN 25, 50, 100, 150, 200 of low, medium or high controlled pressure, with control mechanism levers located to the right or left in the direction of gas flow.

The operating conditions of the regulators must comply with the climatic version U2 GOST 14140-69 with an ambient temperature of minus 45 to plus 40 °C.

Examples symbol valves:

Safety shut-off valve DN50, low controlled pressure with a response range (0.0003 - 0.075) MPa with levers of the control mechanism located on the left in the direction of gas flow:

Valve KPZ-50R TU 3712-002-72549424-2012.

Safety shut-off valve DN 100, high controlled pressure with a response range (0.003-0.75) MPa with levers of the control mechanism located to the right in the direction of gas flow:

Valve KPZ-100VP TU 3712-002-72549424-2012.

Main specifications and parameters of the KPZ valve

Working pressure at the inlet: no more than 1.2 MPa.

Working environment: natural gas in accordance with GOST 5542-87.

Operation accuracy: ±5%.

Valve response time: no more than 1 second.

Type of connection to the pipeline: flange according to GOST 12820-80 for a nominal pressure of 1.6 MPa.

Service life: at least 10 years.

Warranty obligations: 12 months from the date of commissioning, subject to the rules of storage, transportation, installation and operation.

Service life: up to 15 years.

KPZ valve according to the order - 1 pc.

Passport KPZ PS - 1 pc.

Set of tuning springs (additionally on request).

The device and principle of operation of the KPZ valve

The KPZ valve consists of a cast body 1. Inside the body there is a seat, which is closed by a valve 2 with a rubber seal. The valve 2 is fixed on the axis 3, which is located in the body 1. On the axis 3, springs 4, 5 are installed, one end of which rests against the body 1, the other against the valve 2. At the end of the axis 3, which goes out, the lever 6 is rigidly fixed, which is connected with a lever 16. A control mechanism 7 is fixed on the body 1, which has a membrane 8, a rod 9 and a tip 15 fixed on the rod. The tip 15 engages with the stop 12 of the lever and prevents it from turning. The membrane is balanced by controlled pressure and springs 10, 11, the forces of which are regulated by bushings 13, 14.

The KPZ valve works as follows:

Controlled pressure is applied to the submembrane cavity of the control mechanism 7, causing the position of the tip 15 in the middle position. When the pressure in the submembrane cavity rises or falls above the setting limits, the tip 15 moves to the left or right, and the stop 12 mounted on the lever 16 disengages from the tip 15, releases the interconnected levers 16 and 6, allowing the axis 3 to turn. The force from the action of the springs 4.5 is transferred to the valve 2, which closes the gas passage. Bringing the valve 2 into working condition after operation is done manually by turning the levers 6, 16 until their tips 15 are fixed and the valve 2 is held in the open position.

Controlled pressure supply dimensions

valve KPZ-50N(V) version 1	valve KPZ-50N(V) version 2
valve KPZ-100N(V) version 1	valve KPZ-100N(V) version 2

Instructions for safety measures when working with the KPZ valve

During the installation and operation of the valves, general provisions on safety in accordance with the requirements of GOST 12.2.003-91, GOST 12.2.063-81, GOST 12.1.019-79, GOST 12.2.007.0-87, “Safety Rules in the Gas Industry” and Section II of SNiP 2.04.08- 87.

The KPZ valve must not be installed in environments that are destructive to cast iron, steel, aluminium, rubber and zinc coating.

All installation work must be carried out without pressure in the process pipeline.

The KPZ valve must be installed so that the direction of flow matches the direction of the arrow on the valve body.

To avoid accidents and accidents, it is prohibited:

Perform troubleshooting or repair of the operating valve, if there is a smell of gas at the place where the valve is installed, smoke, light matches, turn on electric lighting (if it is not made in an explosive version).

Installation and preparation of the KPZ valve for operation

Preparing the product for installation.

Unpack the KPZ valve, remove the transport plugs.

To depreserve the surfaces of the valve parts from lubrication.

Check visually appearance valve for mechanical damage.

Placement and installation.

The KPZ valve must be installed in front of the pressure regulator on a horizontal section of the gas pipeline. The membrane must be in a vertical position.

The impulse pipe must be connected to the gas pipeline after the regulator and, if possible, have an upward slope from it and have no areas where condensate can accumulate.

Installation and connection of the KPZ valve must be carried out by a specialized construction and installation and operating organization in accordance with the approved project, technical specifications for construction and installation works.

KPZ valve operation

First, the valve is adjusted to the upper limit of operation by changing the force of the spring 11 by rotating the sleeve 14. During adjustment, the pressure in the impulse tube should be maintained slightly below the set upper limit, and then slowly increase the pressure and make sure that the valve operates at the set upper limit.

When adjusting the lower limit of the valve operation, the rotation of the sleeve 13 changes the force of the spring 10. During the adjustment, the pressure in the impulse tube should be maintained slightly above the set lower limit, and then slowly reduce the pressure and make sure that the valve operates at the set lower limit. After completing the adjustment, increase the pressure in the impulse tube and make sure that the valve operates again at the upper limit of the adjustment. Text copied from www.site.

KPZ valve maintenance

Maintenance of the KPZ valve should be carried out within the time frame provided for by the schedule.

Technical inspection, checking the setting and operation of the valve should be carried out once a month.

Scheduled preventive maintenance of the valve must be carried out at least once a year.

The list of works performed during maintenance is given in the table below.