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Ball valve AT 3502, 3522

Ball valve in stainless steel/PTFE with weld ends or internal threads and mounting flange for actuators. Suitable for automatization. Three-piece for easy service and maintenance.

Dimension RangeDN 10 to 250
PN10 to 100
Temperature Range-50ºC to + 200ºC
MaterialStainless Steel

Variations

Article number Body material DN PN Temperature (°C) Connection Amount
AT 3502-10 RSK 4516101 Stainless Steel 10 100 -50-200 Welding
AT 3502-15 RSK 4516100 Stainless Steel 15 100 -50-200 Welding
AT 3502-20 RSK 4516118 Stainless Steel 20 100 -50-200 Welding
AT 3502-25 RSK 4516126 Stainless Steel 25 100 -50-200 Welding
AT 3502-32 RSK 4516134 Stainless Steel 32 100 -50-200 Welding
AT 3502-40 RSK 4516142 Stainless Steel 40 70 -50-200 Welding
AT 3502-50 RSK 4516159 Stainless Steel 50 70 -50-200 Welding
AT 3502-65 RSK 4516167 Stainless Steel 65 50 -50-200 Welding
AT 3502-80 RSK 4516175 Stainless Steel 80 50 -50-200 Welding
AT 3502-100 RSK 4516183 Stainless Steel 100 50 -50-200 Welding
AT 3502-125 Stainless Steel 125 40 -50-200 Welding
AT 3502-150 Stainless Steel 150 40 -50-200 Welding
AT 3522-10 RSK 4515714 Stainless Steel 10 100 -50-200 Internal thread
AT 3522-15 RSK 4515722 Stainless Steel 15 100 -50-200 Internal thread
AT 3522-20 RSK 4515730 Stainless Steel 20 100 -50-200 Internal thread
AT 3522-25 RSK 4515748 Stainless Steel 25 100 -50-200 Internal thread
AT 3522-32 RSK 4515755 Stainless Steel 32 100 -50-200 Internal thread
AT 3522-40 RSK 4515763 Stainless Steel 40 70 -50-200 Internal thread
AT 3522-50 RSK 4515771 Stainless Steel 50 70 -50-200 Internal thread
AT 3502HT(DN) Stainless Steel 10-100 40-100 -50-250 Welding
AT 3502HP(DN) Stainless Steel 15-80 63-220 0-65 Welding
AT 3502PEEK(DN) Stainless Steel 10-200 25-130 0-280 Welding
AT 3502GF(DN) Stainless Steel 10-200 40-100 -50-200 Welding
AT 3502GF25(DN) Stainless Steel 10-200 30-120 -50-200 Welding

Product information

Main Facts

Dimension rangePNTemperature rangeMaterial

DN 8-250

10/100-50 - 200 ºC

Stainless Steel

Range of Application

Shut-off valve mainly for:
- Caustic solutions, acid and salt solutions
- Solvents and alcohols
- LPG, natural gas and petroleum products.
- Warm and cold water, compressed air.
- Saturated steam, see pressure-temperature table.

Program text

PSB.1 Ball Valves
Ball valve in Stainless Steel AT 3502 ..., with reduced bore, weld ends and stainless steel lever. Gasket box of graphite.

Ball valve Stainless Steel AT 3522 ..., with reduced bore, internal thread and stainless steel lever. Gasket box of graphite.

Quality Assurance

Tested according to SS-ISO 5208. Leakage class A applies to this valve type.
The valves are approved by TA-luft, and fulfil the requirements in EGN94 for combustible gases, maximum 4 bar(e)
Certificate SS-EN 10204, type 2.2 and 3.1, has to be specified when ordering.

CE-marking

The valves meet the demands from PED, AFS 2016:1, the directive for pressure equipment, according to category III, fluid group 1 and 2. Dimensions to DN 25 satisfies § 8 of the PED, AFS 2016:1.

Surface

Standard surface finish from 3.1 to 6.3 µm for body & ball. Finer surface finish on request.

Material specification

AT3502/3522

1Body

Stainless Steel
1.4404 / 1.4408

2BallStainless Steel
1.4404
3StemStainless Steel
1.4404
4Body gasketPTFE
5Seat ring*PTFE
6Stem sealPTFE, glass-reinforced
7Stem gasketPTFE, carbon-filled and glass reinforced
8Centering ringPTFE, glass-reinforced
Stainless Steel
9End pieceStainless Steel
1.4404
10LeverSteel/epoxi coated
*Seat in high temperature performance, carbon-filled (25%) PTFE, additional designation HT. Seat rings in different material on request.

Dimension and weight for valves with reduced bore, AT 3502, 3522

DN8101520253240506580100125150200250
A65656572,585,499,3110,4126,3142,6169,5214277307409460
A1**-130130150160180200230290310350400480600730
B959595100120125135140150154169183183262310
C145145145145185185200200250480480480480720800
D404040425358717686153168182182258305
E30303032383642467099114128128186232
F11,111,111,114,220,625,431,738506282,4100100150200
G5,45,45,45,47,57,58,98,98,91919191928,530
H363636364241,5*48,5*547090125125125150175
I36363636424250507070102102102125140
JM5M5M5M5M5M5M6M6M8M8M10M10M10M12M16
K9,59,59,59,5111114,314,314,322,522,522,522,53538
L222222222525303045------
M2525252530303535555570707085100
ISOflangeF03F03F03F03F04F04F05F05F07F07F10F10F10F12F14
Weight0,50,50,50,81,31,82,83,871221354085150
Weight AT35522,02,23,13,96,17,410,016,026,034,047,0

56,0

134,0200,0
*Body length
** A1, face to face AT3552
Measurements in mm. weight in kg

Function and Design

Three-piece ball valve for simple service and maintenance.
No disassembling or changing of gaskets is necessary when the valve is welded in.
Homogenous and floating ball for tight shut-off and low pressure drop.
Self-compensating stem packing gives a tight valve even with high operation frequency.
The design with blow-out safe stem prevents the stem to blow out at pressure hammer.
Mounting flange according to ISO 5211 for actuators.
No dismantling of valve at service and maintenance.
Valves bigger than DN50 have round body and mounting flange.

Technical Information

Pressure and temperature, reduced bore AT 3502, 3522
Seat materialDN 8-25DN 32-40DN 50-80DN 100

Standard

PTFE

Max. working pressure bar(g)*100 (T ≤ 50°C)70 (T ≤ 50°C)50 (T ≤ 50°C)40 (T≤ 50°C)
Max. temperature °C**200 (P ≤ 16 bar)200 (P ≤ 9 bar)200 (P ≤ 7 bar)200 (P ≤ 5 bar)

High temperature (HT)

25% carbon-filled PTFE

Max. working pressure bar(g)*100 (T ≤ 80°C)70 (T ≤ 80°C)50(T ≤ 80°C)40 (T≤ 80°C)
Max. temperature °C**250 (P ≤ 10 bar)250 (P ≤ 8 bar)250 (P ≤ 5 bar)250 (P ≤ 4 bar)

High pressure (HP)

Delrin

Max. working pressure bar(g)*220 (T ≤ 65°C)DN32, 150 DN40, 200 (T ≤ 65°C)DN 50-65, 60 DN80 70 (T ≤ 65°C)NA
Max. temperature °C**65 (P ≤ 220 bar)DN 32, 65 (P ≤ 150 bar) DN 40 200DN 50, 150 DN65, 90 DN80, 70NA
Metal sealedMax. working pressure bar(g)*See separate pressure/temp curvesSee separate pressure/temp curvesSee separate pressure/temp curvesSee separate pressure/temp curves
Max. temperature °C**See separate pressure/temp curvesSee separate pressure/temp curvesSee separate pressure/temp curvesSee separate pressure/temp curves

Pressure and temperature acc. to applied standards. Note that the pressure- and temperatures above is not related.

*Max temperature °C up to the specified pressure.

**Max pressure bar(g) up to specified temperature.

Torque

Torque at dP 25 bar
DN8101520253240506580100125150200250
Nm56661118243078120180250250420840

For torque from other seat materials and cavity filled valves add 20% to the torque listed above

Cryo seats decreases the torque by 50% under room temperature, but it increases by 50% under low temperatures, like -196 °C.

Kvs value

Kv-value reduced and full bore
DN8101520/1525/3032/2540/3250/4065/5080/65100/80125/100150/125200/150250/200
KVS888133048801202504707001250125018002800

3502/3507 meassurements welded ends

AT 3502/3507 Meassurements welded ends
DN8101520253240506580100125150200250
Dy13,517,221,326,933,742,448,360,376,188,9114,3139,7168,3219,1273
Di9,512,616,220,6263240506580100125150200260
Material thickness2,02,32,553,153,855,24,155,155,554,457,157,359,159,556,5

Measurements internal threads

AT 3522 Measurements internal thread
DN810152025324050
G1/43/81/23/411 1/41 1/22
E13,116,6720,9526,4433,2541,9147,859,61
K13,513,516,517,520,520,524,525,5
W2121273341515668
No. of threads1919141411111111

Measurements in mm.

Accessories and Options

Can be provided with different types of actuators and limit switches. (See separate datasheet AT 3830, AT 3831, AT3840, AT3841, AT 3900)
The valve is available with different types of accessories and in different performance as:
Stem extension, Cavity fillers, spring return lever with spring-to-open or spring-to-close function. Fire-safe design, three-way valves, heating jacket, Cryo performance, double gasket box, tank bottom valve, high pressure performance.
Three-piece valves give many variations for connection, for example one weld end and one threaded end. NPT threads and customer related welded ends.

Installation

Valves with weld ends can be welded in without disassembling, provided that the ball is in open position. See separate manual.

Flanges

Fitting flanges AT 3552 drilled according to:
DNFormDNConnection form
10-50SS 335-PN40125-200SS 335-PN16
65-100SS 335-PN25250SS 335-PN10

Maintenance and Spare parts

The valve construction permits a simple exchanging of all parts. See separate installation- and maintenance instructions AT 9980-3502.

Marking

Manufacturer, DN, PN, material code, CE and on special valves flow direction arrow.

How to order

DNAT 3502AT 3522AT 3547
Article No.RSK-No.Article No.RSK-No.
83522-8451 59 20
103502-10451 61 013522-10

451 59 38

153502-15451 61 003522-15451 59 46
203502-20451 61 183522-20451 59 53
253502-25451 61 263522-25451 59 61
323502-32451 61 343522-32451 59 79
403502-40451 61 423522-40451 59 87
503502-50451 61 593522-50451 59 95
653502-65451 61 67
803502-80451 61 75
1003502-100451 61 83

How to order cont.

HT = High temperature performance
FS = Fire-safe

C = Cryogenic

HP = High pressure performance

G = 15% glass-filled PTFE

GF = 25% glass-filled PTFE

See separate pressure/temperature curves for selection of seat gaskets.

Accessories

Pneumatic actuator AT 3840

Pneumatic actuator for on-off and control of ball valves, butterfly valves or where 90° rotation is…

Select

Pneumatic actuator AT 3841

Pneumatic single acting actuator for on-off and control of ball valves, butterfly valves or where 90°…

Select