1

bar (e)

60

50

40

30

10

0 50 100 150 200 250°C

8887x2 -- DN 25-50, 80-100

8887x0, -x1, -x3, -x7 -- DN 65-100-x4 -- DN 25-50

8887x0, -x1, -x3, -x7 -- DN 10-50-x2 -- DN 25-50

Intelligent Automation

NAF-Triball ball valvesDN 10-100 for max. 56 bar(e)

Fk 25.622(6)GB 12.98

Ersätter Fk 25.622(5)GB 12.97

Primary characteristicsNAF-Triball is a full bore ball valve designed for shut-off, on-off functions as well as control application forthe metal seated version. The ball valve is made ofstainless steel for maximum pressure of 56 bar(e) andin sizes DN 10-100.

NAF-Triball has3-piece body, which simplifies disassemblingfull bore, which gives a low flow resistancea design, which simplifies mounting of pneumaticor electric actuatorsfloating ball which makes the valve tight in bothdirections even at low dpthe stem provided with axial bearing washer ofPTFE which seals off the media from the packingglandthe packing gland of PTFE and O-ring in Vitonwhich if required can be tightenseat rings in glassfibre reinforced PTFE or Stellite(NAF 88874x)lockable handlever in open or closed positionvalve top according to ISO 5211

ApplicationsNAF-Triball can be used as a control valve (metalseated) or as a shut-off valve, in a wide variety ofapplications and in different operating modes.One version , NAF 8887x4, is intended for samplingof, for example, suspended media where there is riskfor plugging. In this version the valve is fitted with aspecial end piece with the same radius as theconnected pipework. The valve can then be weldeddirect to the pipework and the ball will be closer to theflowing media, which eliminates plugging.

Working pressure, differantial pressureand temperatures

Max. differential pressure (valve closed)Max. working pressure (body)

Test pressureOpen valve: 1,5 x max. working pressureClosed valve: 1,1 x max. differential pressure

2

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15

NAF 888730/40DN 10-100Female cylindrical,pipe thread Rp.

NAF 888731/41DN 10-100Short welding endsfor "mm" pipes

NAF 888732/42DN 25-65, PN 10-40DN 80-100, PN 10-16Face-to-face lengthacc. to DIN 3202-F1and ISO 5752 serie 1Flanges

NAF 888733/43DN 10-100Long welding endsfor "mm" pipes

NAF 888734/44DN 25, 40 and 50Welding end for "mm"pipe and connectionplate for sampling.Consult NAF for moreinformation.

Selection table

Valve type Description

Material specifikation

NAF 888737/47DN 10-100Long welding endsfor ISO pipes acc. toISO 4200 range E

NAF 888735/45DN 10-100Long welding endand female cylindrical,pipe thread Rp.

NAF 888736/46DN 10-80Female cylindrical,pipe thread NPT

NAF 888739/49DN 10-1000Long welding end forISO pipe acc. to ISO4200 and female cyl.pipe thread Rp.

* Recommended spare parts1) Refer to NAF 88873x2) Refer to NAF 88874x

Item Part Material

1 Sleeve PVC 2 Lever ASTM A167 Typ 304 3 Gland, DN < 50 ASTM A276 Typ 316

Gland, DN > 65 ASTM A167 Typ 304 4 Nut ASTM A492 Typ 304 5 Washer ASTM A167 Typ 304 6* Box packing + O-ring PTFE resp. Viton 7 Stem ASTM A276 Typ 316 8* Bearing washer PTFE 9A*1) Seat ring + Seal.ring Reinforced PTFE+PTFE 9B*2) Seat ring + Seal ring Stellite + PTFE10 End piece ASTM A351GrCF8M11 Body ASTM A351GrCF8M12A*1) Ball, standard ASTM A276 Typ 31612B*2) Ball, hard chromed ASTM A276 Typ 316

hard chromed13 Hex. srew, DN < 50 ASTM A492 Typ 304

Stud, DN > 65 ASTM A492 Typ 30414 Spring washer ASTM A492 Typ 304

3

dd0

L

R

H

g

d d1d0

L

H

R

d2

R

H

L

d0 D

L

d1 d

R

d0

H

d2

NAF-Triball ball valves

Dimensions and mass

DN d0 d d1 d2 L H R Mass kg

10 12,7 10 12 18 64 48 96 0,4 15 15,9 15 17 22 74 54 124 0,7 20 20,6 20 22 28 86 57 124 1,0 25 25,4 25 28 34 98 64 142 1,4 32 31,8 32 35 43 122 70 142 2,3 40 38,1 40 43 49 136 86 202 3,4 50 50,8 50 54 61 154 93 202 5,6 65 63,0 65 69 78 173 139 250 8,5 80 76,0 80 84 100 193 150 250 13,0100 95,0 100 105 125 216 160 300 20,5

DN d0 d g L H R Mass kg

10 12,7 R 3/8" 10 64 48 96 0,4 15 15,9 R 1/2" 15,5 74 54 124 0,7 20 20,6 R 3/4" 17 86 57 124 1,0 25 25,4 R 1" 19 98 64 142 1,4 32 31,8 R 1 1/4" 23 122 70 142 2,3 40 38,1 R 1 1/2" 23 136 86 202 3,4 50 50,8 R 2" 23 154 93 202 5,6 65 63,0 R 2 1/2" 25 173 139 250 8,5 80 76,0 R 3" 28 193 150 250 13,0100 95,0 R 4" 32 216 160 300 20,5

NAF 888731/41

NAF 888732/42

DN Fläns d0 D L H R Mass kg

25 PN 40 25,4 115 160 80 142 4,2 32 " 31,8 140 180 100 142 5,1 40 " 38,1 150 200 100 202 7,4 50 " 50,8 165 230 110 202 10,0 65 " 69,0 185 290 139 250 15,4 80 PN 16 76,0 200 310 150 250 24,0100 " 95,0 220 350 160 300 34,0

NAF 888733/43

DN d0 d d1 d2 L H R Mass kg

10 12,7 10 12 17 214 48 96 0,6 15 15,9 15 17 21 224 54 124 0,9 20 20,6 20 22 27 236 57 124 1,2 25 25,4 25 28 33 248 64 142 1,6 32 31,8 32 35 42 272 70 142 2,5 40 38,1 40 43 49 286 86 202 3,8 50 50,8 50 54 60 304 93 202 6,3 65 63,0 65 69 76 323 139 250 10,0 80 76,0 80 84 91 343 150 250 14,5100 95,0 100 105 114 366 160 300 24,0

NAF 888730/40

4

dy

R

L1L

d0

H

dd1d2

R

H

L

d0

t

d

dd0

L

R

H

g

R

H

L

gdad0 db d1 d2

NAF 888734/44

DN* d 0 d d1 d2 L L1 H R Mass kg

25 25,4 25 28 34 124 42 64 142 1,8 40 38,1 40 43 49 143 53 86 202 4,2 50 50,8 50 54 61 152 67 93 202 6,5

dy Specified at ordering* Other dimensions available on request

DN d0 d t L H R Mass kg

10 12,7 17,2 2,0 214 48 96 0,6 15 15,9 21,3 2,0 224 54 124 0,9 20 20,6 26,9 2,0 236 57 124 1,2 25 25,4 33,7 2,3 248 64 142 1,6 32 31,8 42,4 2,6 272 70 142 2,5 40 38,1 48,3 2,6 286 86 202 3,5 50 50,8 60,3 2,9 304 93 202 5,0 65 63,0 76,1 2,9 323 139 250 10,0 80 76,0 88,9 3,2 343 150 250 14,0100 95,0 114,3 3,6 366 160 300 24,0

NAF 888737/47

DN d0 d g L H R Mass kg

10 12,7 NPS 3/8" 10 139 48 96 0,415 15,9 NPS 1/2" 15,5 149 54 124 0,720 20,6 NPS 3/4" 17 161 57 124 1,025 25,4 NPS 1" 19 173 64 142 1,432 31,8 NPS 1 1/4" 23 197 70 142 2,340 38,1 NPS 1 1/2" 23 211 86 202 3,450 50,8 NPS 2" 23 229 93 202 5,665 63,0 NPS 2 1/2" 25 248 139 250 8,580 76,0 NPS 3" 28 268 150 250 13,0

NAF 888736/46

NAF 888735/45

DN d0 da g db d1 d2 L H R Mass kg

10 12,7 R 3/8" 10 10 12 17 139 48 96 0,5 15 15,9 R 1/2" 15,5 15 17 21 149 54 124 0,8 20 20,6 R 3/4" 17 20 22 27 161 57 124 1,1 25 25,4 R 1" 19 25 28 33 173 64 142 1,5 32 31,8 R 1 1/4" 23 32 35 42 197 70 142 2,4 40 38,1 R 1 1/2" 23 40 43 49 211 86 202 3,6 50 50,8 R 2" 23 50 54 60 229 93 202 5,9 65 63,0 R 2 1/2" 25 65 69 76 248 139 250 9,2 80 76,0 R 3" 28 80 84 91 268 150 250 13,0100 95,0 R 4" 32 100 105 114 291 160 300 22,3

5

R

H

L

gdad0 db

t

NAF-Triball ball valves

DN 10 15 20 25 32 40 50 65 80 100

Z 0,24 0,24 0,24 0,24 0,24 0,24 0,24 0,25 0,28 0,30 Kv 8 18 32 50 80 120 200 320 480 720Nm 8 11 16 25 40 48 65 110 180 300

Nm = operating torque in Newton meter. The operating torque shall be used for selection of actuator.The values shown are the max. necessary ones for operating a valve which has been closed during a longtime. For valves which will be manoeuvreded often, the operating torque is considarably lower.

Z = resistance numberKv = 0,86 x Cv, Cv = 1,16 x Kv

Capacity and operating torque

ActuatorIn its standard version NAF-Triball is equipped withhand lever of stainless steel with PVC coating. Thevalve can also be provided with pneumatic or electricactuators for on-off operation.Consult your NAF representative for further informa-tion.

NAF 888739/49

DN d0 da g db t L H R Mass kg

10 12,7 R 3/8" 10 17,2 2,0 139 48 96 0,5 15 15,9 R 1/2" 15,5 21,3 2,0 149 54 124 0,8 20 20,6 R 3/4" 17 26,9 2,0 161 57 124 1,1 25 25,4 R 1" 19 33,7 2,3 173 64 142 1,5 32 31,8 R 1 1/4" 23 42,4 2,6 197 70 142 2,4 40 38,1 R 1 1/2" 23 48,3 2,6 211 86 202 3,6 50 50,8 R 2" 23 60,3 2,9 229 93 202 5,9 65 63,0 R 2 1/2" 25 76,1 2,9 248 139 250 9,2 80 76,0 R 3" 28 88,9 3,2 268 150 250 13,0100 95,0 R 4" 32 114,3 3,6 291 160 300 22,3

6

Welding-in NAF-TriballAlways check that the pipes between which the valve isto be welded are parallel and have the same centre line.Remember that damage to the seat ring can causeleakage. Always use great care in disassembling andreassembling the valves to avoid damage to the ringsfrom contamination. After welding, both valves andconnecting pipes should be sluiced from welding debris,scale etc.

The version with long welding ends, NAF 888733/37and NAF 888743/47 need not to be disassembledbefore welding. Note that the ball must be in theopen position during welding. The length of thewelding ends is such that the temperature will notdamage the interior of the valve. This is on the conditionthat welding is done professionally and in accordancewith applicable standards.

NAF-Triball with short welding ends, NAF 888731/41,must be disassembled before welding. The valve bodyand its seat rings must be removed as described underthe headline "NAF-Triball is simple to disassemble" andreplaced with a suitable spacer, such as a body of thesame DN but without internal parts. Screw the endpieces together and weld the unit into the pipe. Afterwelding, refit the complete valve body and tighten thescrews to specified torque.

NAF-Triball is simple to disassemble1. Turn the ball to the open position. Remove one of

the bolts (or stud) and release the other three.2. Remove the body section.3. Refit the body section after the planned action is

carried out and tighten the bolts (or studs).

To faciliate dismantling and handling of valves in sizesDN 65-100 these valves are equipped with a supportflange for the studs which are fitted into clearance holesin the top part of the body.

Ordering exampleNAF 888730, DN 15 NAF-Triball Ball valves - and dataon media, pressure and temperature.If the valve is to be fitted with an actuator, data are alsorequired on max. differential pressure, operating pressure(air) and whether end switches and solenoid valves aredesired. Voltage and type of current should be indicatedwhere appropriate.

Ordering of spare partsWhen placing order for spare parts, specify:

NAF-No., DN and Part No. (see the valve'sidentification plate)Quantity requiredDescription of the part and its item No. (see theMaterial specification on page 2.)

Example: NAF 888731, DN 15, Part No. 3038510,10 pce Seat ring PTFE, item No. 9.

We reserve the right to design modifications without prior notice

NAF ABSE-581 87 LinköpingSweden

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