Knife Gate Valve "A" Type - DN50-2000

Handwheel rising stem

Handwheel non-rising stem

Handwheel pneumatic stem

Handwheel electric actuator stem

Handwheel gear box

Fig 7

Fig 8

Fig 9

Fig 10

Fig 11

Fig 12

Knife Gate Valve "A" Type - DN50-2000

PRODUCT FAMILY
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KNIFE GATE VALVES
CHOICE OF PRODUCT
Manual type
Main features

  • Unidirectional wafer-design knife gate valve.
  • One-piece cast body with guides to support gate and seat wedges.
  • Provides high flow rates with low pressure drop.
  • Various seat and packing materials available.
  • Face-to-face dimension in accordance with SG Pam standards.
  • An arrow is marked on the body indicating the flow direction.

General applications

This knife gate valve is suitable for liquids that contain a maximum of 5% suspended solids. If it is used for dry solids in gravity feed applications it should be installed with the arrow on the body pointing in the opposite direction to the flow. Designed for applications such as:

  • Sewage treatment
  • Pumping
  • Mining
  • Chemical plants
  • Food Industry
  • Silo emptying
  • Paper Industry

Sizes and working pressure

Sizes: from DN50 up to 2000 mm (larger sizes on request).

Working Pressure:

  • DN50 to DN150 : 10kg/cm2
  • DN200 : 8kg/cm2
  • DN250 to DN300 : 6kg/cm2
  • DN350 to DN400 : 5kg/cm2
  • DN450 to DN600 : 3kg/cm2
  • DN700 to DN1400 : 2kg/cm2

These pressures must be applied to the valve in the direction of the arrow marked on the valve's body. Due to the valve's design with gate support guides, 30% of these pressures can be applied in the opposite direction to the arrow.

Standard Flanges : DIN PN10 and ANSI B16.5 (class 150)

Other Common Flanges :

  • DIN PN 6
  • DIN PN 16
  • DIN PN25
  • BS "D" and "E"
  • ANSI 150
  • Others on request

Accordance to standards

  • Machinery Directive: DIR 2006/42/EC (MACHINERY)
  • Pressure Equipment Directive: DIR 97/23/EC (PED) ART.3, P.3
  • Potential Explosive Atmospheres Directive: DIR 94/9/EC (ATEX) CAT.3 ZONE 2 and 22 GD
  • For further information on categories and zones please contact SG PAM Technical-Commercial Dept.

Unitary hydraulic tests

All valves are tested hydrostatically in the production site and material and test certificates can be provided.

  • Body test = working pressure x 1.5.
  • Seat test = working pressure x 1.1.

Added values

When a knife gate valve remains open for long periods of time and the body’s internal walls are parallel a very large torque is required to close it. Model A’s body is cone-shaped inside, providing greater space. This way, when the valve is closed the solids stored inside it can be easily removed.

This valve is defined as unidirectional and these valves are normally at risk of the gate bending due to counter-pressure. This cannot happen with the “A” type valve because it contains internal guides that support the knife gate and allow it to work under counter-pressure of 30% of the maximum working pressure, without the knife gate bending.

The stem protection hood is independent from the handwheel securing nut, this means the hood can be disassembled without the need to release the handwheel. This advantage allows regular maintenance operations to be performed, such as lubricating the stem, etc.

The stem is made of 18/8 stainless steel. This is another added advantage, as some manufacturers produce it with 13% chrome and it gets rusty very quickly.

The handwheel is made of GJS-500 nodular cast iron. Some manufacturers produce them in normal cast iron which can lead to breakages in the event of very high operating torque or knocks. The yoke has a compact design with the bronze actuator nut protected in a sealed and lubricated box. This makes it possible to move the valve with a key, even without the handwheel (in other manufacturers’ products this is not possible).

The pneumatic actuator’s upper and lower covers are made of GJS-400 nodular cast iron, making them highly shock resistant. This characteristic is essential in pneumatic actuators.

The pneumatic cylinder’s o-ring seals are commercial products and can be purchased worldwide. This means it is not necessary to contact us every time a seal is required.

Gate Safety Protection: In accordance with European Safety Standards (“EC” marking), the automated valves are equipped with gate guards, to prevent any objects from being accidentally caught in the gate.

Materials and coating

Item

Component

Cast iron version

St. steel version

1

Body

GJL-250

CF8M

2

Gate

AISI304

AISI316

3

Guide

RCH1000

RCH1000

4

Packing gland

GJS-500

CF8M

5

Packing SYNT

SYNT + PTFE

SYNT + PTFE

6

O-ring seal

EPDM

EPDM

7

Support plates

S275JR

S275JR

8

Ring

AISI316

AISI316

9

Seat

EPDM

EPDM

10

Stem

AISI303

AISI303

11

Yoke

Steel

Steel

12

Stem nut

Bronze

Bronze

13

Check nut

ST44.2 + ZINC

ST44.2 + ZINC

14

Handwheel

Nodular cast iron

Nodular cast iron

15

Nut

Steel

Steel

16

Hood

Steel

Steel

17

Top cap

Plastic

Plastic

Epoxy Coating: all cast iron and carbon steel bodies and components on the valves are epoxy coated, giving the valves great resistance to corrosion and an excellent finish. The standard color is blue, RAL-5015.

Design characteristics

Body

Unidirectional wafer-design knife gate valve. One-piece cast body with guides to support gate and seat wedges.

For diameters greater than DN1200 the body is machine-welded with the necessary reinforcements to resist the maximum working pressure.

Full port designed to provide high flow rates with low pressure drop.

The body’s internal design prevents any buildup of solids in the seat area.

The standard manufacturing materials are GJL-250 cast iron and CF8M stainless steel. Other materials, such as GJS-500 nodular cast iron, A216WCB carbon steel and stainless steel alloys (AISI316Ti, Duplex, 254SMO, Uranus B6…) are available on request. As standard, iron or carbon steel valves are painted with an anti-corrosive protection of 80 microns of epoxy powder (color RAL 5015). Other types of anticorrosive protections are available on request.

Gate

The standard manufacturing materials are AISI304 stainless steel in valves with iron body and AISI316 stainless steel in valves with CF8M body. Other materials or combinations can be supplied on request.

The gate is polished on both sides to provide a smooth contact surface with the resilient seat. At the same time, the gate is rounded to prevent the seat from being cut. Different degrees of polishing, antiabrasion treatments and modifications are available to adapt the valves to the customer’s requirements.

Seat: (watertight)

Six types of seats are available according to the working application:

  • Seat 1: Metal / metal seat. This type of seat does not include any kind of resilient seat and the estimated leakage (considering water as the test fluid) is 1.5% of the pipe flow.
  • Seat 2: Standard soft-seated valve. This type of seat includes a resilient seat which is fixed to the inside of the body via an AISI316 stainless steel retaining ring.
  • Seat 3: Soft-seated valve with reinforced socket. This type of seat includes a resilient seat which is fixed to the inside of the body via an AISI316 stainless steel retaining ring with two functions (to protect the valve from abrasion and clean the gate when working with solids that can stick to it).
  • Seats 4, 5 and 6: The same as seats 1, 2 and 3 but including a deflector. The deflector is a cone-shaped ring located at the valve's entrance with two functions (to protect the valve from abrasion and guide the flow to the centre of the valve).

Three materials are available for the reinforced socket and the deflector (CA-15 steel, CF8M and Ni-hard).

Resilient seat materials:

  • EPDM : This is the standard resilient seat fitted for this types of valves. It can be used in many applications, however, it is generally used for water and products diluted in water at temperatures no higher than 90°C*. It can also be used with abrasive products and it provides the valve with 100% watertight integrity.
  • NITRILE : It is used in fluids containing fats or oils at temperatures no higher than 90°C*. It provides the valve with 100% watertight integrity.
  • VITON : Suitable for corrosive applications and continuous high temperatures of up to 190°C and peaks of 210°C. It provides the valve with 100% watertight integrity.
  • SILICONE : Mainly used in the food industry and for pharmaceutical products with temperatures no higher than 200°C. It provides the valve with 100% watertight integrity.
  • PTFE : Suitable for corrosive applications and pH between 2 and 12. Does not provide the valve with 100% watertight integrity. Estimated leakage: 0.5% of the tube flow.

In some applications other types of resilient materials are used, such as Hypalon, Butile or natural rubber. Please contact us if you require one of these materials.

Seat/seals
MaterialMax.T. (°C)Applications

Métal/Métal

>250

High temp./Low watertight integ

EPDM (E)

90 *

Non-mineral acids and oils
Nitrile (N)90 *Hydrocarbons, oils and greases
Viton (V)200Hydrocarbons and solvents
Silicone (S)200Food Products
PTFE (T)250Corrosion resistant

* EPDM and nitrile: is possible until serving temperature Max.: 120°C under request.

Packing

Standard packing for this type of valves is composed of three lines with a specially designed EPDM O-ring in the middle which provides watertight integrity between the body and the gate, preventing any type of leakage to the atmosphere. It is located in an easily accessible place and can be replaced without dismantling the valve from the pipeline. Below we indicate various types of packing available according to the application in which the valve is located:

  • GREASED COTTON (Recommended for hydraulic services): This packing is composed of braided cotton fibers soaked in grease both inside and out. It is for general use in hydraulic applications in both pumps and valves.
  • DRY COTTON: This packing is composed of cotton fibers. It is for general use in hydraulic applications with solids.
  • COTTON + PTFE: This packing is composed of braided cotton fibers soaked in PTFE both inside and out. It is for general use in hydraulic applications in both pumps and valves.
  • SYNTHETIC + PTFE: This packing is composed of braided synthetic fibers soaked in PTFE both inside and out. It is for general use in hydraulic applications in both pumps and valves and in all types of fluids, especially corrosive ones, including concentrated and oxidizing oils. It is also used in liquids with solid particles in suspension.
  • GRAPHITE: This packing is composed of high-purity graphite fibers. A diagonal braiding system is used and it is impregnated with graphite and lubricant which helps to reduce porosity and improve operation. It has a wide range of applications as graphite is resistant to steam, water, oils, solvents, alkali and most acids.
  • CERAMIC FIBRE: This packing is composed of ceramic material fibers. Its main applications are with air or gas at high temperatures and low pressures.

Note: More details and other materials available on request.

Packing
MaterialP(bar)Max.T. (°C)pH

Greased cotton

10

1006-8

Dry cotton

0,5

1006-8
Cotton + PTFE301206-8
Synthetic + PTFE100-200+2700-14
Graphite406500-14
Ceramic Fibre0,314000-14

Stem

The stem on the valve is made of 18/8 stainless steel. This characteristic provides high resistance and excellent corrosion-resistant properties.

The valve design can be rising stem or non-rising stem. When rising stem is required a stem hood is supplied to protect the stem from contact with dust and dirt, as well as keeping it lubricated.

Packing gland

The packing gland allows uniform force and pressure to be applied to the packing to ensure watertight integrity.

As standard, valves with cast iron body include GJS-500 packing glands, whilst valves with stainless steel body have CF8M packing glands.

Actuators

All types of actuators can be supplied, with the advantage that the design is fully interchangeable. This design allows the customer to change the actuators themselves and normally no extra assembly accessories are required. In the event any accessory is required, PAM will supply it.

  • Manual: - Handwheel with rising stem - Handwheel with non-rising stem - Chainwheel - Lever - Gear Box - Others (square nut,...)
  • Automatic: - Electric actuator - Pneumatic cylinder - Hydraulic cylinder

Interchangeable Actuators: All actuators are easily interchangeable.

Actuator or Yoke Support: Made of EPOXY-coated steel (or stainless steel on request), its robust design gives it great rigidity in order to resist the most adverse operation conditions.

Handwheel rising stem

Handwheel non-rising stem

Handwheel pneumatic stem

Handwheel electric actuator stem

Handwheel gear box

Accessories and options

Different types of accessories are available to adapt the valve to specific working conditions such as:

  • Mirror Polished Gate: The mirror polished gate is especially recommended in the food industry and, as standard, in applications in which solids can stick to the gate. It is an alternative to ensure the solids slide off and do not stick to the gate.
  • PTFE Lined Gate: As with the mirror polished gate, it improves the valve’s resistance to products that can stick to the gate.
  • Stellited Gate: Stellite is added to the gate’s lower edge to protect it from abrasion.
  • Scraper in the Packing: Its function is to clean the gate during the opening movement and prevent possible damage to the packing.
  • Air Injection in the Packing Gland: By injecting air in the packing, an air chamber is created which improves the watertight integrity.
  • Heating Jacket: Recommended in applications in which the fluid can harden and solidify inside the valve’s body. An external jacket keeps the body temperature constant, preventing the fluid from solidifying.
  • Flushing Holes in Body (fig. 7): Several holes can be drilled in the body to flush air, steam or other fluids out in order to clean the valve seat before sealing. Fig 7
  • Mechanical Limit Switches, Inductive Switches and Positioners: Limit switches or inductive switches are installed to indicate precise valve position, as well as positioners to indicate continuous position.
  • Solenoid Valves: For air distribution to pneumatic actuators.
  • Connection Boxes, Wiring and Pneumatic Piping: Fully assembled units can be supplied with all the necessary accessories.
  • Stroke Limiting Mechanical Stops
  • Mechanical Locking Device: Allows the valve to be mechanically locked in a set position for long periods of time.
  • Emergency Manual Actuator (Hand Wheel /Gear Box) : Allows manual operation of the valve in the event of power or air failure.
  • Triangular (V-Notch) and Pentagonal Diaphragm with Indication Rule (Fig. 8): Recommended for applications in which flow regulation is required. It allows flow control according to the valve's opening percentage. Fig 8
  • Bonnet (Fig. 9): The bonnet provides total watertight integrity to the outside, reducing the packing maintenance required

Fig 9

Types of extensions

When the valve needs to be operated from a distance, the following different types of actuators can be fitted:

  • Extension: Floor Stand - This extension is achieved by coupling a rod to the stem. The desired extension length is achieved by defining the length of the rod. A floor stand is normally installed to support the actuator - The definition variables are as follows: H1 : Distance from the valve's center to the base of the stand, d1 : Separation from the wall to the end of the connecting flange - Characteristics: a- It can be coupled to any type of actuator b- A stem support-guide (Fig. 10) is recommended every 1.5 m Fig 10 c- The standard floor stand is 800mm high (Fig. 11). Other floor stand measurements available on request: Fig 11 d- A position indicator can be fitted to determine the valve's percentage of opening.(tilting stand available on request (Fig. 12) Fig 12 - Components list Component Standard Version ASI 304 Stem AISI 303 Rod AISI 304 Support-guide Carbon steel with epoxy coating Guide Nylon Stand GJS-500 with epoxy coating
  • Extension: Pipe - Consists of raising the actuator. The pipe will rotate in the same direction as the handwheel when the valve is operated. The valve always remains at the same height - The definition variables are as follows: H1 : Distance from the valve’s center to the base of the stand, d1 : Separation from the wall to the end of the connecting flange - Characteristics: a- Standard actuators: Handwheel and “Square Nut” b- A pipe support guide is recommended every 1.5m c- The standard materials are: epoxy coated carbon steel and stainless steel
  • Extension: Extended Support Plates When a short extension is required, it can be achieved by extending the support plates. An intermediate yoke can be fitted to reinforce the support plates structure
  • Extension: Universal Joint If the valve and the actuator are not in correct alignment, the problem can be resolved by fitting a universal joint.

Handwheel with Non-rising stem

  • Suitable when no size limitations exist.
  • B = Max. Width of the valve (without actuator) D = Max. Height of the valve (without actuator)
  • Options : - Square nut - Locking devices - Extensions: stand, pipe, plates... - DN higher than those given in the table
  • Actuator including: - Handwheel - Stem - Guide bearings on the yoke - Nut
  • Available: DN50 to DN2000, other DN on request.
  • Note that, from DN600 onwards the actuator is with gears.
DNΔPLinear forceNominal torqueACDJKØ handwheelMass
mmkg/cm2NwNmmmmmmmmmmmmmkg
50108151.8640612411012802257
651013753.1440682681013082258
801020834.7650912941013332259
1001032527.435010433410137322511
12510508011.65011836711140722513
15010513411.76013041911145822517
2008913826.16015952512857832529
25061022729.27019662612867932540
30061474842.17023072612877938053
35051606462.39625479730590645093
40052104281.61002879033051012450126
45032004377.71063049893051098450160
50032488396.511034011013051210450193
600336081139.911039813073051416450264
700239945180.11104531506335--435
800243493237.81105031720335--580
900255024300.91105831953335--740
1000268580374.91106132137335--925
1200299025642.51507282616355--1350

Chainwheel

  • Widely used in raised installations with difficult access, the handwheel is fitted in vertical position.
  • B = Max. Width of the valve (without actuator) D = Max. Height of the valve (without actuator)
  • Options : - Locking devices - Extensions: stand, pipe, plates... - Non-rising stem - DN higher than those given in the table.
  • Including: - Handwheel - Stem - Nut - Hood
  • Available: DN50 to DN1200, other DN on request.
  • Note that, from DN600 onwards the actuator is with gears
DNΔPLinear forceNominal torqueACDJKØ handwheelMass
mmkg/cm2NwNmmmmmmmmmmmmmkg
50108151.8640612411012802257
651013753.1440682681013082258
801020834.7650912941013332259
1001032527.435010433410137322511
12510508011.65011836711140722513
15010513411.76013041911145822517
2008913826.16015952512857832529
25061022729.27019662612867932540
30061474842.17023072612877938053
35051606462.39625479730590645093
40052104281.61002879033051012450126
45032004377.71063049893051098450160
50032488396.511034011013051210450193
600336081139.911039813073051416450264
700239945180.11104531506335--435
800243493237.81105031720335--580
900255024300.91105831953335--740
1000268580374.91106132137335--925
1200299025642.51507282616355--1350
For this kind of actuator, please consult us.

Lever

  • It is a fast actuator
  • B = Max. Width of the valve (without actuator) D = Max. Height of the valve (without actuator)
  • Note that the actuator includes: - Lever - Rod - Guide bearing - External limiting switches to maintain the position
  • Also available: DN50 to DN300, other DN on request.
DNPFAMassStemMechanismVersionReferences
mmbarkg
50108RisingLeverCast ironVGA50AAM5I
60/65109RisingLeverCast ironVGA65AAM5I
801010RisingLeverCast ironVGA80AAM5I
1001011RisingLeverCast ironVGB10AAM5I
1251014RisingLeverCast ironVGB12AAM5I
1501016RisingLeverCast ironVGB15AAM5I
200832RisingLeverCast ironVGB20AAM5I
250654RisingLeverCast ironVGB25AAM5I
300657RisingLeverCast ironVGB30AAM5I
For DN > 300 and/or handwheel with non-rising stem, please consult us
DNPFAMassStemMechanismVersionReferences
mmbarkg
50108RisingLeverStainless steelVGA50ABM5I
60/65109RisingLeverStainless steelVGA65ABM5I
801010RisingLeverStainless steelVGA80ABM5I
1001011RisingLeverStainless steelVGB10ABM5I
1251014RisingLeverStainless steelVGB12ABM5I
1501016RisingLeverStainless steelVGB15ABM5I
200832RisingLeverStainless steelVGB20ABM5I
250654RisingLeverStainless steelVGB25ABM5I
300657RisingLeverStainless steelVGB30ABM5I
For DN > 300 and/or handwheel with non-rising stem, please consult us
DNΔPLinear forceABCDNOPMass
mmkg/cm2Nwmmmmmmmmmmmmmmkg
50108154091612413251555048
651013754091682683251555269
8010208350919129432515554910
100103252509110433432515560511
1251050805010111836742515590214
1501051346010113041942515595616
2008913860118159525620290102732
25061022770118196626620290141654
30061474870118230726620290152557

Gear Box 90

  • B = Max. Width of the valve (without actuator) D = Max. Height of the valve (without actuator)
  • Options : - Chainwheel - Locking devices - Extensions: stand, pipe, plates... - Non-rising stem
  • Actuator including: - Stem - Yoke - Cone-shaped gear box - Handwheel
  • Standard ratio = 4 to 1.
  • Available: DN 50 to DN 2000, other DN on request.
DNPFAMassStemMechanismVersionReferences
mmbarkg
7002430RisingHandwheel + Gear boxCast ironVGB70AAM5C
8002615RisingHandwheel + Gear boxCast ironVGB80AAM5C
9002768RisingHandwheel + Gear boxCast ironVGB90AAM5C
10002972RisingHandwheel + Gear boxCast ironVGC10AAM5C
110021142RisingHandwheel + Gear boxCast iron-
120021298RisingHandwheel + Gear boxCast ironVGC12AAM5C
FFor DN > 1200 and/or handwheel with non-rising stem, please consult us
DNPFAMassStemMechanismVersionReferences
mmbarkg
7002430RisingHandwheel + Gear boxStainless steelVGB70ABM5C
8002615RisingHandwheel + Gear boxStainless steelVGB80ABM5C
9002768RisingHandwheel + Gear boxStainless steelVGB90ABM5C
10002972RisingHandwheel + Gear boxStainless steelVGC10ABM5C
110021142RisingHandwheel + Gear boxStainless steel-
120021298RisingHandwheel + Gear boxStainless steelVGC12ABM5C
FFor DN > 1200 and/or handwheel with non-rising stem, please consult us
DNΔPLinear forceNominal torqueABCDPMass
mmkg/cm2NwNmmmmmmmmmmmkg
50108151.8640916124154017
651013753.1440916826856618
801020834.7650919129459219
1001032527.43509110433463220
12510508011.65010111836766524
15010513411.76010113041971726
2008913826.16011815952594250
25061022729.270118196626104363
30061474842.170118230726119477
35051606462.3962902547971335106
40052104281.61002902879031441134
45032004377.71062903049891677173
50032488396.511029034011011789216
600336081139.911029039813072045284
700239945180.111032045315062401430
800243493237.811032050317202715615
900255024300.911032058319533043768
1000268580374.911032061321373351972
1100283196539.8150340670237536751142
1200299026642.5150340728261640421298
13002117653763.3150390787288243821400
14002136884888.115039083732504852-
150021585911190.617042689035175217-
160021806531518.617042695737755575-
170022040521715.2190440101040085908-
180022307151939.4190440105742426242-
190022584722172.6210480111043906490-
200022891552760.9210480116245406740-

Double-acting pneumatic cylinder

  • The double-acting pneumatic actuators are designed to work at a pressure between 6 and 10 kg/cm2
  • 10 Kg/cm2 is the maximum admissible air pressure. For air pressures below 6 Kg/cm2 please consult manufacturer.
  • For DN50 to DN200 valves, the cylinder’s jacket and covers are made of aluminium, the rod of AISI304, the piston of rubber-coated steel and the o-ring seals are made of nitrile.
  • For valves larger than DN200 the covers are made of nodular cast iron or carbon steel.
  • On request, we can also supply the actuator made entirely of stainless steel, especially for installation in corrosive atmospheres.
  • B = Max. Width of the valve (without actuator) D = Max. Height of the valve (without actuator)
  • Available: DN50 to DN1200, other DN on request.
DNΔPLinear forceABCDCylinder diameterØ StemQDN screwRMass
mmkg/cm2Nwmmmmmmmmmmmmmminchmmkg
50108154091612418020961/4"4167
651013754091682688020961/4"4568
801020835091912948020961/4"4989
1001032525091104334100201151/4"56212
12510508050101118367125251381/4"63618
15010513460101130419125251381/4"71722
2008913860118159525160301751/4"87437
25061022770118196626200302183/8"103658
30061474870118230726200302183/8"118272
35051606496290254797250402703/8"1381130
400521042100290287903250402703/8"1530155
450320043106290304989300453821/2"1676225
5003248831102903401101300453821/2"1839257
6003360811102903981307300453821/2"2146340
7002399451103204531506350454261/2"2481556
8002434931103205031720350454261/2"2798679
9002550241103205831953400505081/2"3167840
1000**1103206132137400505081/2"34511053
1100**1503406702375400505081/2"37621210
1200**1503407282616400505081/2"41351366
For this kind of actuator, please consult us.

Single-acting pneumatic cylinder

  • The single-acting pneumatic actuators are designed to work at a pressure between 6 and 10 kg/cm2.
  • 10 Kg/cm2 is the maximum admissible air pressure. For air pressures below 6 Kg/cm2 please consult manufacturer.
  • Available for opening or closing in case of failure (spring opening or closing).
  • The jacket is made of aluminium, the covers of nodular cast iron or carbon steel, the rod of AISI304, the piston of rubber-coated steel, the O-ring seals of nitrile and the spring is made of steel
  • The actuator design is spring activated for valves with diameters up to DN300. For larger diameters the actuator contains a double-acting cylinder and an air tank which stores the volume of air necessary to perform the last movement in the event of a fault.
  • B = Max. width of the valve (without actuator) D = Max. height of the valve (without actuator)
  • Also available: from DN50 to DN1200, other DN on request
DNΔPLinear forceABCDCylinder diameterØ JDN screwØ StemHMass
mmkg/cm2Nwmmmmmmmmmmmminchmmmmkg
50108154091612411251351/4"2578119
651013754091682681251351/4"2580622
801020835091912941251351/4"2583323
10010325250911043341251351/4"2587324
125105080501011183671601701/4"3090935
150107316601011304191601701/4"3096036
200813017601181595252002153/8"30135566
250620352701181966262502703/8"401844130
300629342701182307262502703/8"402005143
For this kind of actuator, please consult us.

Electric actuator

  • This actuator is automatic and includes the following parts: - Stem - Electric motor - Yoke
  • The electric motor includes: - Emergency manual handwheel - Limit switches - Torque switches
  • Options: - Different types and brands - Non-rising stem
  • ISO 5210 / DIN 3338 Flanges
  • Available: DN50 to DN2000, other DN on request.
  • From DN500 the motor is assisted with a gear box.
DNΔPLinear forceNominal torqueABCDQRSTUVMass
mmkg/cm2NwNmmmmmmmmmmmmmmmmmmmmmkg
50108151.8640916124119710223426534758724
651013753.1440916826819710223426537461425
801020834.7650919129419710223426540064026
1001032527.43509110433419710223426544068027
12510508011.65010111836719710223426547371330
15010513411.76010113041919710223426552576532
2008913826.16011815952519710223426564088042
25061022729.27011819662619710223426574198155
30061474842.170118230726197102234265841114172
35051606462.396290254797197115256282944134799
40052104281.610029028790319711525628210501550136
45032004377.710629030498922215332538511471847166
50032488396.5110290340110122215332538512591959245
600336081139.9110290398130722215332538514652165362
700239945180.1110320453150622215332538516512451432
800243493237.8110320503172022215333238518652665630
900255024300.9110320583195322215333238520982998764
1000268580374.9110320613213722215333238522883178998
1100283196539.81503406702375227195355510257536751194
1200299026642.51503407282616227195355510286640421350
13002117653763.31503907872882227195355510308243821452
14002136884888.1150390837325022215333238533954852-
150021585911190.6170426890351722215333238536625217-
160021806531518.6170426957377522719535551039755575-
170022040521715.21904401010400822719535551012105908-
180022307151939.41904401057424222719535551012576242-
190022584722172.62104801110439022719535551045906490-
200022891552760.92104801162454022719535551047406740-
For this kind of actuator, please consult us.

Hydraulic actuator (oil pressure: 135 Kg/cm2)

  • B = Max. width of the valve (without actuator) D = Max. height of the valve (without actuator)
  • The hydraulic actuator includes: - Hydraulic cylinder - Puente
  • Available: From DN50 to DN2000.
  • Different types and brands available according to customer's requirements.
DNΔPLinear forceABCDWCylinder diameterDN screwOilØ StemMass
mmkg/cm2Nwmmmmmmmmmmmminchdm³mmkg
5010815409161241457253/8"0.03187
65101375409168268500253/8"0.03188
80102083509191294560253/8"0.04189
1001032525091104334620323/8"0.092212
12510508050101118367683323/8"0.112215
15010513460101130419755403/8"0.202820
2008913860118159525926503/8"0.272831
250610227701181966261077503/8"0.332844
300614748701182307261246503/8"0.972862
350516064962902547971376503/8"1.1328100
4005210421002902879031532633/8"1.2936138
4503200431062903049891707633/8"2.3136161
50032488311029034011011869633/8"2.5836223
60033608111029039813072176803/8"3.0945325
70023994511032045315062525801/2"5.6645481
800243493110320503172028391001/2"6.4656678
900255024110320583195331721001/2"7.2556861
1000268580110320613213734961251/2"8.05701103
1100283196150340670237537601251/2"8.84701266
1200299026150340728261641741251/2"9.62701430
13002117653150390787288244511601/2"10.45701647
14002136884150390837325049391601/2"11.3970-
15002158591170426890351752861601/2"12.0270-
16002180653170426957377556581601/2"20.0070-
170022040521904401010400859912001/2"21.2390-
180022307151904401057424263252001/2"22.4690-
190022584722104801110439065782001/2"23.7590-
200022891552104801162454068282001/2"24.9790-
For this kind of actuator, please consult us.

Information on flange dimensions

  • EN 1092-2 PN10 Standards
DNΔPThreadedDepthØ K
mmkg/cm2QuantityQuantitymmmmmm
50104-M168125
65104-M168145
801044M169160
1001044M169180
1251044M169210
1501044M2010240
200844M2010295
250666M2012350
300666M2012400
3505106M2021460
4005106M2421515
4503146M2422565
5003146M2422620
6003146M2722725
7002168M2722840
8002168M3022950
9002208M30201050
10002208M33201160
110022012M33201270
120022012M36221380
130022012M36261490
140022412M39261590
150022412M39351700
160022812M45401820
170023014M45401920
180023014M45402020
190023216M45452120
200023216M45452230
  • ANSI B16, class 150 Standards
DNΔPR UNCDepthØ K
mmkg/cm2QuantityQuantityinchmmmm
2"104-5/8"8120.6
2.5104-5/8"8139.7
3"104-5/8"9152.4
4"10445/8"9190.5
5"10443/4"9215.9
6"10443/4"10241.3
8"8443/4"10298.4
10"6667/8"12361.9
12"6667/8"12431.8
14"5841"21476.2
16"51061"21539.7
18"310611/8"22577.8
20"314611/8"22635
24"314611/4"22749.3
28"220811/4"22863.6
30"220811/4"22914.4
32"2181011/2"22977.9
36"2201211/2"201085.9
40"2241211/2"201200.2