vanne_annulaire_photo
Vanne_annulaire_E508_NGL_manuelle
Vanne_annulaire_E508_NGL_motorisee
vanne_annulaire_photo
Vanne_annulaire_E508_NGL_manuelle
Vanne_annulaire_E508_NGL_motorisee

Needle valve E508 NGL

Product family
Pipeline protection

Fields of application

The main characteristic of needle valve is the capacity to modulate water flow rate and elevated differential pressure. The needle valve NGL is able to do a linear manoeuvre also in a presence of relevant partialization degree although high inlet pressure and big exercise difference of pressure. The possibility to be actuated by electrical devices permit to use this valve in combination with control system to realize multiple function.

The needle valve controls the water flow rate through the axial movement of a shutter operated by a connecting-rod and crank mechanism. The inlet flow rate is channeled into a round section passage which gradually decreasing and then increasing from the intake to the sealing seat.

The internal profile of the valve is designed to optimize the hydrodynamic profile in order to have:

  • low head losses whit valve completely open
  • minimize cavitation phenomena in case of big differences between inlet and outlet pressures of valve. In this case the valve can be equipped with a special stainless steel cylinder for hydraulic loads dissipation

,

Range

The needle valve E508 NGL is proposed in standard versions:

  • Manual or motorized (with handwheel)
  • DN100 to 1000
  • Without anti-cavitation cylinder

Technical design

Vanne_annulaire_E508_NGL_manuelle
Manual/motorizable Version
Vanne_annulaire_E508_NGL_motorisee
Motorized Version

Features

Dimensions

Manual/motorizable Version

PN10
DN A B G D E F L M N H C Mass
mm mm mm mm mm mm mm mm mm mm mm mm kg
100 117,5 300 134 122 50 235 300 140 90 80 167 44
150 150 335 134 155 40 300 350 160 110 95 200 71
200 170 405 169 185 58 340 400 170 150 115 230 103
250 198 440 169 218,5 53 395 450 200 170 125 263.5 150
300 226 470 169 250 53 445 500 230 200 135 295 198
400 299 557 174 320 50 565 600 280 240 160 382 344
500 363 690 303 376 100 670 700 330 316 185 438 582
600 428 750 303 440 80 780 800 370 320 215 530 808
700 492 845 308 510 85 895 900 440 440 230 600 1153
800 555 910 308 570 80 1015 1000 500 500 250 660 1486
900 622 1010 384 640 95 1115 1100 550 550 275 730 2142
1000 689 1075 384 710 75 1230 1200 600 600 300 800 2742
1200 833 1240 384 860 35 1485 1400 700 700 350 988 4126
1400 960 1390 609 1000 145 1685 1600 800 800 400 1128 5677
1600 1085 1575 514 1100 75 1930 1800 900 900 450 1233 7550
PN16
DN A B G D E F L M N H C Mass
mm mm mm mm mm mm mm mm mm mm mm mm kg
100 117,5 300 134 122 50 235 300 140 90 80 167 44
150 150 335 134 155 40 300 350 160 110 95 200 71
200 170 405 169 185 58 340 400 170 150 115 230 102
250 203 440 169 218,5 53 405 450 200 170 125 263.5 151
300 230 472 173 250 70 460 500 230 200 135 295 202
400 299 625 303 320 120 580 600 280 240 160 382 372
500 363 690 303 376 100 715 700 330 316 185 438 604
600 428 750 303 440 80 845 800 370 320 215 530 855
700 492 845 308 510 85 910 900 440 440 230 600 1161
800 555 910 308 570 80 1025 1000 500 500 250 660 1490
900 622 1010 384 640 95 1125 1100 550 550 275 730 2146
1000 689 1075 384 710 75 1255 1200 600 600 300 800 2769
1200 833 1240 514 860 75 1485 1400 700 700 350 988 4290
1400 960 1390 514 1000 75 1685 1600 800 800 400 1128 5665
1600 1085 1575 514 1100 75 1930 1800 900 900 450 1233 7550
PN25
DN A B G D E F L M N H C Mass
mm mm mm mm mm mm mm mm mm mm mm mm kg
100 117,5 300 134 122 50 235 300 140 90 80 167 44
150 150 365 169 155 78 300 350 160 110 95 200 77
200 180 405 169 185 58 360 400 170 150 115 230 104
250 213 442 174 218,5 70 425 450 200 170 125 263.5 158
300 243 472 174 250 70 485 500 230 200 135 295 207
400 310 625 303 320 120 620 600 280 240 160 382 385
500 365 690 308 376 125 730 700 330 316 185 438 616
600 428 750 308 440 105 845 800 370 320 215 530 859
700 492 845 308 510 85 960 900 440 440 230 600 1201
800 555 910 384 570 115 1085 1000 500 500 250 660 1589
900 622 1010 514 640 135 1185 1100 550 550 275 730 2289
1000 689 1075 514 710 115 1320 1200 600 600 300 800 3027

Motorized Version

PN10
DN A B G D E F L M N H C Mass
mm mm mm mm mm mm mm mm mm mm mm mm kg
100 117,5 398 388 122 215 235 300 140 90 80 167 63
150 150 433 388 155 205 300 350 160 110 95 200 90
200 170 478 413 185 198 340 400 170 150 115 230 121
250 198 513 413 218,5 193 395 450 200 170 125 263.5 168
300 226 543 413 250 193 445 500 230 200 135 295 216
400 299 630 420 320 208 565 600 280 240 160 382 364
500 363 713 547 376 190 670 700 330 316 185 438 598
600 428 773 547 440 170 780 800 370 320 215 530 825
700 492 868 552 510 175 895 900 440 440 230 600 1170
800 555 933 552 570 170 1015 1000 500 500 250 660 1502
900 622 1033 628 640 185 1115 1100 550 550 275 730 2158
1000 689 1098 630 710 183 1230 1200 600 600 300 800 2761
1200 833 1263 630 860 143 1485 1400 700 700 350 988 4145
1400 960 1413 760 1000 183 1685 1600 800 800 400 1128 5698
PN16
DN A B G D E F L M N H C Mass
mm mm mm mm mm mm mm mm mm mm mm mm kg
100 117,5 398 388 122 215 235 300 140 90 80 167 63
150 150 433 388 155 205 300 350 160 110 95 200 90
200 170 478 413 185 198 340 400 170 150 115 230 120
250 203 513 413 218,5 193 405 450 200 170 125 263.5 169
300 230 543 413 250 193 460 500 230 200 135 295 220
400 299 630 420 320 208 580 600 280 240 160 382 390
500 363 713 547 376 190 715 700 330 316 185 438 620
600 428 773 547 440 170 845 800 370 320 215 530 872
700 492 868 552 510 175 910 900 440 440 230 600 1180
800 555 933 552 570 170 1025 1000 500 500 250 660 1508
900 622 1033 628 640 185 1125 1100 550 550 275 730 2164
1000 689 1098 630 710 183 1255 1200 600 600 300 800 2788
1200 833 1263 630 860 143 1485 1400 700 700 350 988 4312
1400 960 1413 760 1000 183 1685 1600 800 800 400 1128 5686
PN25
DN A B G D E F L M N H C Mass
mm mm mm mm mm mm mm mm mm mm mm mm kg
100 117,5 398 388 122 215 235 300 140 90 80 167 62
150 150 438 413 155 218 300 350 160 110 95 200 95
200 180 478 413 185 198 360 400 170 150 115 230 122
250 213 515 418 218,5 210 425 450 200 170 125 263.5 176
300 243 545 420 250 228 485 500 230 200 135 295 227
400 310 648 547 320 210 620 600 280 240 160 382 403
500 365 713 554 376 233 730 700 330 316 185 438 635
600 428 773 552 440 195 845 800 370 320 215 530 876
700 492 868 554 510 193 960 900 440 440 230 600 1220
800 555 933 630 570 223 1085 1000 500 500 250 660 1611
900 622 1033 760 640 243 1185 1100 550 550 275 730 2311
1000 689 1098 760 710 223 1320 1200 600 600 300 800 3049

Material and coating

Item Description Material Coating
1 Body Ductile Iron GS 500-7 Epoxy powder 250µ mini – RAL 5005
2 Cover AISI 304  
3 Bush Bronze CuSn12  
4 O-ring Elastomer EPDM  
5 Shaft AISI 420  
6 Link Block AISI 304  
7 Shutter guides Bronze CuSn8  
8 Rod AISI 420  
9 Shutter AISI 304  
10 Fork AISI 304  
11 Retaining Ring AISI 304  
12 O-ring NBR  
13 Sealing Ring PTFE - Carbographite  
14 Gasket NBR  
  Anti-cavitation cylinder AISI 304  
  Internal Screws AISI 304  
  External Screws AISI 304  
Vanne_annulaire_E508_NGL_nom

Gearbox and actuator characteristics

Main features gearbox:

  • Non-reversible worm gearbox
  • Manufacturer: AUMA / Germany
  • Material: Cast iron GG25 according to DIN 1693
  • External grey coating: 60 microns thickness, primer and spray coating
  • Open-close shutter position indicator
  • Enclosure IP68.3 according to EN60529
  • Actuation flange ready for optional further fitting of an electric actuator
  • Handwheel (for manual version): steel - epoxy coated with 150 microns DFT - direction arrows and words OPEN/SHUT stamped

Main features actuator:

  • 3 phases/ 400 V/ 50 Hz squirrel cage AC motor
  • Manufacturer: AUMA / Germany
  • Modulating service S4 -25% according to CEI / IEC standards
  • 2 end-stops switches tandem type
  • 2 torque limit switches
  • Heater in switch compartment (5-20 W)
  • Engageable emergency handwheel
  • Electronic position transmitter 4-20 mA
  • Enclosure IP67 according to EN60529

On request, it is also possible to configure differently the actuator (f.e. limit switches tandem type, enclosure IP68, etc..) and/or install an integral control unit. The gearbox of manual version valve is equipped with flange for electrical actuator mounting. Below the summary table showing the dimensional and operating features of gearing and electric actuators installed on the valves.

Table: Gearbox & actuator characteristics

DN PN Gearbox AUMA type Number of turns Operating torque AUMA actuator Speed Closing time
mm       Nm   rpm s
100 16 GS 50.3 - F10 6.5 9 SAR 07.6 22 18
100 25 GS 50.3 - F10 6.5 14 SAR 07.6 22 18
100 40 GS 63.3 - F10 6.5 23 SAR 07.6 22 18
150 16 GS 50.3 - F10 7.5 16 SAR 07.6 16 28
150 25 GS 63.3 - F12 7.5 24 SAR 07.6 16 28
150 40 GS 63.3 - F12 7.5 38 SAR 07.6 16 28
200 10 GS 63.3 - F12 9.5 14 SAR 07.6 16 36
200 16 GS 63.3 - F12 9.5 22 SAR 07.6 16 36
200 25 GS 63.3 - F12 9.5 33 SAR 07.6 16 36
250 10 GS 63.3 - F12 10.0 22 SAR 07.6 11 54
250 16 GS 63.3 - F12 10.0 33 SAR 07.6 11 54
250 25 GS 80.3 - F12 10.4 47 SAR 07.6 11 56
300 10 GS 63.3 - F12 9.1 31 SAR 07.6 11 50
300 16 GS 80.3 - F12 9.5 44 SAR 07.6 11 52
300 25 GS 80.3 - F12 9.5 67 SAR 10.2 11 52
400 10 GS 80.3 - F14 9.0 53 SAR 10.2 8 67
400 16 GS 100.3/VZ4.3 - F14 35.3 21 SAR 07.6 32 66
400 25 GS 100.3/VZ4.3 - F14 35.3 33 SAR 07.6 32 66
500 10 GS 100.3/VZ4.3 - F16 34.9 21 SAR 07.6 22 95
500 16 GS 100.3/VZ4.3 - F16 34.9 33 SAR 07.6 22 95
500 25 GS 125.3/VZ4.3 - F16 34.9 50 SAR 10.2 22 95
600 10 GS 100.3/VZ4.3 - F16 38.4 19 SAR 07.6 22 105
600 16 GS 100.3/VZ4.3 - F16 38.4 30 SAR 07.6 22 105
600 25 GS 125.3/VZ4.3 - F16 38.4 44 SAR 07.6 22 105
700 10 GS 125.3/VZ4.3 - F25 36.0 33 SAR 07.6 16 135
700 16 GS 125.3/VZ4.3 - F25 36.0 50 SAR 10.2 16 135
700 25 GS 125.3/VZ4.3 - F25 36.0 77 SAR 10.2 16 135
800 10 GS 125.3/VZ4.3 - F25 35.2 60 SAR 07.6 16 132
800 16 GS 125.3/VZ4.3 - F25 35.2 120 SAR 10.2 16 132
800 25 GS 160.3/GZ 8:1 - F25 74.8 120 SAR 10.2 32 140
900 10 GS 160.3/GZ 8:1 - F30 72.9 60 SAR 07.6 22 199
900 16 GS 160.3/GZ 8:1 - F30 72.9 120 SAR 10.2 22 199
900 25 GS 200.3/GZ 16:1 - F30 142.5 120 SAR 10.2 45 190
1000 10 GS 160.3/GZ 8:1 - F30 73.9 47 SAR 10.2 22 201
1000 16 GS 160.3/GZ 8:1 - F30 73.9 73 SAR 10.2 22 201
1000 25 GS 200.3/GZ 16:1 - F30

144.4

 64 SAR 10.2 45 193
1200 10 GS 160.3/GZ 8:1 - F30 76.7 58 SAR 10.2 16 288
1200 16 GS 200.3/GZ 16:1 - F30 149.0 52 SAR 10.2 32 281
1400 10 GS 200.3/GZ 16:1 - F35 149.0 51 SAR 10.2 32 279
1400 16 GS 200.3/GZ 16:1 - F35 149.0 78 SAR 10.2 32 279
1600 10 GS 200.3/GZ 16:1 - F35 149.0 78 SAR 10.2 32 279
1600 16 GS 250.3/GZ 16:1 - F35 146.2 104 SAR 14.2 32 274

Performances and Standards

Hydraulic test

Every single needle valve is subjected to hydraulic final test in according to EN12266 and EN1074:

  • Body test at Ptest = max (1,5·PN ; PEA) (opened valve)
  • Seat test at Ptest = max (1,1·PN ; PEA) (closed valve)

Product test

Control of coating: thickness control, holiday test, impact test, MIBK test.

Conformity to Standards

Plan test:

  • EN 12266
  • EN 1074

Flange drilling:

  • EN 1092-2
  • ISO 7005-2
  • Face to face EN-558-1 Serie 15

Control devices connection:

  • ISO 5211 for valve-gearbox
  • ISO 5210 for gearbox-actuator

Suitability for potable water:

  • D.M. 174/04 for applicable parts (ex C.M. 102 of 02/12/1978)
  • Foreign conformity: KTW (Germany), WRC (U.K.), ACS (France)

Valve selection

For the right dimensioning and functioning and it is necessary to know the followings hydraulic parameters:

  • Hydrostatic downstream pressure (that is the upstream pressure with closed valve)
  • Upstream pressure Pin and downstream pressure Pout with maximum flow rate Qmax
  • Upstream pressure Pin and downstream pressure Poutwith minimum flow rate Qmin

Moreover it’s necessary to verify that the maximum speed in the valve have to be equal or inferior to 5m/s and the temperature have to stay between 0°C and 40 °C.

With this parameters is possible to size correctly the valve and evaluate if is necessary to use the anticavitation cylinder, consulting the Technical-Commercial SG PAM department.

Hydraulic features

For the calculation of head loss is possible to use the following expression:

in which: Δh = head loss (m.c.a.), ζ = head loss coefficient (adimensional – from diagram 1), v = nominal speed (m/s), g = gravity acceleration 9,81 (m/s2)

After it’s possible determinate the flow rate Q (m3/h) in this way:

with Kv = flow rate coefficient (from diagram 2). It correspond to the flow rate in m3/h at 20°C that will cause a pressure drop of 1 m of column of water (10,2 corrective factor in meters).

Vanne_annulaire_E508_NGL_debit
Vanne_annulaire_E508_NGL_debit

Cavitation

To estimate the risk of cavitation it’s possible to use the following diagram. In order to verify if the valve are working in cavitation condition it is necessary to determinate the cavitation index σ by means the following formula:

with: Pout = dynamic outlet pressure (m.c.a.), Pin = dynamic intlet pressure (m.c.a.) , Pa = absolute pressure (~ 10m)

The following diagram shows the critical cavitation index in relation to grade of opening for each typology (standard, anti-cavitation cylinder K20, K50, K100, K150). The value of cavitazione index σ should be about 25% above to the critical ones. The opening degree is calculated as showed in Par.4.1.

Marking

On the body according to EN19:

  • Nominal diameter in mm (DN)
  • Nominal pressure in bar (PN)
  • Type of ductile iron
  • Manufacturer’s logo
  • Flow direction
  • Model code
  • Fusion date.

On the label according to EN19:

  • Nominal diameter in mm (DN)
  • Nominal pressure in bar (PN)
  • Maximum allowable pressure (PFA)
  • Closing diraction
  • Product code
  • Ordination number and confirmation
  • Manufacturer’s logo.

Instruction for use

Storage

The needle valve will have to be held (if possible) in covered places, the most possible protected from the sun (maximum temperature 70°C) and from the rain and generally from the atmospheric agents. Moreover it will have to be avoided that the seal of the same air valves come to contact with powder or earth.

Installation

Had to be respected the direction of flow rate marked in fusion on the body of valve. Reverse flow can be accepted only with complete open valve without any necessity of regulation. It’s better to insert a dismounting joint to facilitate all the operation of installation and maintenance. For detailed information see Operation and Maintenance Manual.

Maintenance

Any maintenance operation requested had to be made only when the system has been emptied completely, in order to avoid any accident for the responsible operator. In order to keep this particularity, it is however necessary to operate the valve at least once a year, for a total cycle (opening/closing). For detailed information see Operation and Maintenance Manual.

Note

Saint-Gobain PAM reserves the right to modify the products anyway fully respecting the laws in force. Always use products fully complying with the European Directives to which the products themselves have to comply with.

FOR ANY FURTHER POSSIBLE TECHNICAL INFORMATION, PLEASE CONSULT SAINT-GOBAIN PAM.

Vanne_annulaire_E508_NGL_cavitation

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Needle valve E508 NGL
Product
Operation and maintenance instructions for needle valve

Storage instructions

Handling

The handling of the valve has to be made with care, in order to avoid any shock, even accidental, which could damage the coating. In particular during the lift of the valve chains, cables or ropes used for that specific operation must not be clamped or touch the shafts, the gearbox or its handwheel. Grab the valve by connecting the lift devices to the flanges or eyebolts (if present).

Storage

Valves are generally supplied with plugs at the extremities, or in pallets banded with plastic film; if the valves are without packing and have to stay for long time in the stock before being install, they must be stocked covering the passage of the valve, safeguarding in this way the interior parts and particularly the seat from the contact with powder or dirt. In absence of a right place the valves have to be wrapped with cellophane or rather dark plastic sheets.

The valves must be stored in a location offering a good protection from direct sun, rain and all other atmospheric agents (admissible temperature range: 0°C  50°C). Rubber parts and gaskets are light-sensible materials; in particular degradations may occur in case of sunlight exposition.

The valves must not weight on the shaft or on the gearbox, and if the valves have to be stacked in a pile, Is is suggested to avoid the contact between coated surfaces: a cardboard between the surfaces should be used.

Accessories and spare kits storage

1- Gasket

Normally rubber gaskets are sunlight sensitive. Therefore it is good practice to store rubber parts in sunlight protected areas, in order to avoid deteriorations. If such conditions are not available, rubber parts should be then at least protected with cellophane or rather dark plastic sheets.

2- Bolts

The requested flange bolting is normally packed in a sack or sent in box equipped with a tag indicating the number and the type of the packed bolts. It is absolutely necessary to keep them in the original condition of delivery, avoiding putting them in contact with material which could damage them. Generally the bolting is slightly lubricated before delivery; any contact with dirt or dust could, in extreme cases, damage the threads and eventually prevent its mounting.

3- Actuators

For this particular type of accessory, which is generally already mounted on the valve when delivered, it is necessary to pay attention that nobody, with the exception of the specialist or authorized people, could attempt to repair or manipulate it, this would take out any warranty covering these specific components. It is very important to check that the threaded orifices for the electric/hydraulic/pneumatic connections are always well protected with the original plugs until their use in final assembly. This will insure that no dirt, dust, humidity or any other external particle will damage the internal parts (gears, electrical coils, pistons, cylinders, seats, etc.). When the electrical wiring is not made immediately after the mechanical mounting of the valve in the pipe system, the installer/contractor will take the necessary measure to protect correctly and thoroughly the actuator against any atmospheric degradation and the built-up of condensation. Furthermore it is necessary to check periodically during this particular period of time the status of internal components, by removing the covers of the operative unit and of the reduction unit, protecting with silicone or oil vaseline the respective cover gaskets when remounting them.