Gate Valve

Russian Standard GOST Gate Valve Z44 (30с41нж, 30с64нж, 30с15нж,30с76нж,30с45нж)

Technical Specifications：
(1) Design Standard: GOST 5762-2002
(2) Face to Face Dimension: GOST 3706-93
(3) End Flange Dimension: GOST 12815-80
End BW Dimension: GB/T 12224
(4) Structures: Straight Pattern
(5) Material of Body: GS-C25, S.S 304, S.S 316
(6) Pressure Rating: PN16, PN25, PN40, PN63,PN160
(7) Test standard: GOST356-80

Feature：
– Straight pattern
– Outside Screw and York
– Bolted bonnet
– Seat in stellite or 13%Cr
– Available with gear operator
– Flange Ends
– Butt-welding Ends

Actuation: can operate with lever, gear box, pneumatic or electric actuator with handwheel for emergencies
Medium: The valve is suitable for several media including water, steam, oil, gas, petrol products, nitric acid, acetic acid, etc.
Working temperature: from -46oC or -50oC (stainless steel constructions) and -29oC (carbon steel constructions) up to 600℃

PART I

GATE VALVES

Steel wedge gate valves, rising stem

Gate valves are made of steel grades: 20, 20Л, 09Г2С, 20ГЛ, 12Х18Н10T, 12Х18Н9TЛ, 10Х17Н13M2T, 12Х18Н12M3TЛ; flanged, socket joining, welding, hand-operated (with flywheel).

PART II

GATE VALVES

Gate valves are made of steel grades: 20Л, 20ГЛ, 12Х18Н9TЛ , 12Х18Н12M3TЛ, with flange, with manual control (with flywheel) or performance under actuator.

PART III

Gate valves with а rubber wedge

I Gate valves

Gate valves are shut off devices, in which the channel is covered by the translational movement of the lock body in a direction perpendicular to the flow of the transported medium. Gate valves are used to block flow of gaseous or liquid media in the pipeline at various pressures and nominal (conventional) passes.

Body parts are manufactured as a method of molding and stamping.

Low hydraulic resistance valves (the drag coefficient of less than 0.5) makes them particularly valuable when applied to pipelines, which are constantly moving through a medium with great speed.

Execution valves closing element - a solid wedge. They fall into the valve with a solid wedge and double disc.

Gate valves are manufactured with a rising stem (threaded spindle and nuts are running out).

Connection to pipe flanges, clutch, welding. Optionally flange may be any according to GOST 12815-80. By default, run on the flange PN ? 16 - version 1, PN 25, 40 - version 2 (by special order PN 25 - Version 3), PN 63, 100, 160 - Version 7 to GOST 12815-80 series 2.

Construction in accordance with GOST 3706-83 length.

Tightness of the gate according to GOST 9544-2005.

Management of manual valves (handwheel).

Operating position of valves in a horizontal pipe or flywheel drive up (a deviation of 45 ? in either direction) on the vertical - any.

Direction of the medium in the valve - on either side of the main aisles.

Catches of steel grades can be made four versions:

- Steel 20 or 20Л;

- Steel 09Г2С or 20ГЛ;

- Steel or 12Х18Н10T 12Х18Н9TЛ;

- Steel or 10Х17Н13M2T 12Х18Н12M3TЛ.

The required performance of selected operating conditions, aggressive working medium temperature.

Missing data in the catalog are available upon request of the consumer.

In the valves used a solid wedge.

Tightness of the gate according to GOST 9544-2005 Class A and B.

Gland packing - stuffing. In the upper position of the spindle has a seal on the conical surface of the lid.

Management manual valve (handwheel).

When ordering, specify: product name, the parameters of the working environment, nominal size (orifice) (DN), nominal (conventional) pressure (PN), product designation, the performance of the material, the need for additional testing.

Example for ordering (and other documentation) gate valve DN 15 mm PN 40 kg/cm2 steel 09Г2С:

II Steel wedge gate valves, flanged, rising stem

Gate valves are shut off devices, in which the channel is covered by the translational movement of the lock body in a direction perpendicular to the flow of the transported medium. Gate valves are used to block flow of gaseous or liquid media in the pipeline at various pressures and nominal (conventional) passes.

Low hydraulic resistance valves (the drag coefficient of less than 0.5) makes them particularly valuable when applied to pipelines, which are constantly moving through a medium with great speed.

On execution of the valve body is usually made full bore, ie diameters of the holes in the valve passages are not narrow. In some instances, narrowed valve in which the diameters of the holes in the hull narrowed. This reduces the effort and torque control systems, as well as reduced dimensions and weight, but it increases the hydraulic resistance. Aligned with a narrowed valve passage marked in the catalog with the letter "У" after the designation of nominal (nominal diameter).

Execution valves closing element - wedge. They fall into the valve with a solid wedge and double disc.

Seal in the gate from both the action on the wedge medium pressure (pressure difference before and after the gate), and additional efforts wedge. Because of this wedge gate valves (especially the double-disk) have a significantly higher degree of integrity than the parallel (in which the seal in the working body is mainly due to the pressure drop in it). They should be used when operating conditions are close to the maximum limit.

Gate valves are manufactured with a rising stem (threaded spindle and nuts are running out).

Connection to the pipeline flange. Optionally flange may be any according to GOST 12815-80. By default, run on the flange PN ? 16 - version 1, PN 25, 40 - version 2 (by special order PN 25 - Version 3), PN 63, 100, 160 - Version 7 to GOST 12815-80 series 2.

Construction in accordance with GOST 3706-83 length.

Tightness of the gate according to GOST 9544-2005.

Office of valves can be manual (handwheel) or from the actuator in a normal or explosion-proof design.

Operating position of valves in a horizontal pipe or flywheel drive up (a deviation of 45 ? in either direction) on the vertical - any. When you install a pipeline to provide additional support for electric drive.

Direction of the medium in the valve - on either side of the main flange.

Catches of steel grades can be made four versions:

- Steel 20Л;

- Steel 20ГЛ;

- Steel 12Х18Н9TЛ

- Steel 12Х18Н12M3TЛ.

The required performance of selected operating conditions, aggressive working medium temperature.

III Gate valves with а rubber wedge

Low hydraulic resistance valves (the drag coefficient of less than 0.5) makes them particularly valuable for use in pipelines and gas pipelines, through which the constantly moving environment with great speed.

On execution of the valve body is made full bore, ie diameters of the holes in the valve passages are not narrow.

Execution valves closing element - rubberized wedge to create the absolute integrity.

Seal in the gate from both the action on the wedge medium pressure (pressure difference before and after the gate), additional efforts and wedge sealing rubber coating of the wedge. Because of this valve with rubber-wedge has a very high degree of integrity, but they should be used when workers are non-aggressive environment used to cover the rubber wedge and the ambient temperature does not exceed 120 ? C.

In the valves used rubberized wedge.

Tightness of the gate according to GOST 9544-2005 Class A.

Gland packing - stuffing. In the upper position of the wedge has a seal on the cylindrical surface of the lid.

Management manual valve (handwheel) or under the actuator.

When ordering, specify: product name, the parameters of the working environment, nominal size (orifice) (DN), nominal (conventional) pressure (PN), product designation, the performance of the material, length (L), the need for additional testing.

Example for ordering (and in other documents) with rubberized wedge gate valves DN 100 mm PN 16 kg/cm2 of cast iron construction ВЧ 40 and 300 mm long:

Wedge gate valve ЗКМ 100-16-01 DN 100 mm PN 16 kg/cm2 30вч39р, length L = 300 mm.

Attention! Valve, designed to transport by pipeline protection PE, designed to work with an operating pressure P of 4 kg/cm2.

Missing data in the catalog are available upon request of the consumer.

Catches are made with non-rising stem (threaded spindle and nut running inside).

Connection to pipe flanges and polyethylene caps to weld. Optionally flange may be any according to DIN 2501 or GOST 12815-80 (version 1, row 2).

Building length according to GOST 3706-83 (DIN 3202).

Tightness of the gate according to GOST 9544-2005.

Office of valves can be manual (handwheel) or from the actuator in a normal or explosion-proof design.

Operating position of valves in a horizontal pipe or flywheel drive up (a deviation of 45 ? in either direction) on the vertical - any. When you install a pipeline to provide additional support for electric drive.

Direction of the medium in the valve - on either side of the main aisles.

Catches by Make-iron or steel can be produced three versions:

- Of cast iron СЧ 25;

- Cast iron ВЧ 40;

- Of steel 20Л.

The required performance is selected by the operating conditions and adherence to the pipeline.

Missing data in the catalog are available upon request of the consumer.