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Ball valve AT 3505, 3525

Ball valve with full bore in stainless steel/CPTFE with weld ends or threaded and mounting flange for actuators. Suitable for actuators. Three-piece construction for easy service and maintenance.

Dimension rangeDN 8 to 100
PN125 to 64
Temperature range-30ºC to + 260ºC
MaterialStainless steel

Variations

Article number Body material DN PN Temperature (°C) Connection Amount
AT 3505-10 Stainless steel 10 125 -30-220 Welding

Product information

Main Facts

Dimension rangePNTemperature rangeMaterial

DN 8-100

125-64-30ºC to + 260 ºC

Stainless steel

Range of Application

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

Program text

PSB.1 Ball Valves

Ball valve Stainless Steel AT 3505 ..., with full bore, weld ends and stainless steel lever. Packing of carbon filled PTFE.

Ball valve Stainless Steel AT 3525 ..., with full bore, threads and stainless steel lever. Packing of carbon filled PTFE.

Quality Assurance

Tested according to SS-ISO 5208. Leakage class A applies to this valve type.
The valves are approved by TA-luft.
Certificate SS-EN 10204, type 2.2 and 3.1, has to be specified when ordering.

CE-marking

The valves meet the requirements of PED, AFS 2016:1 acc. to category III group 1 and 2. Dimensions to DN 25 satisfies § 8 of the PED, AFS 2016:1.

Surface

Standard surface finish below 3.1 µm for body & ball. Finer surface finish on request.

Material specification

Components

AT3505/3525

1Body

Stainless steel
1.4408

2BallStainless steel
1.4401
3StemStainless steel
1.4401
4Body gasketPTFE
5Seat ring*PTFE, carbon filled
6Stem gasketPTFE, glass-reinforced
7Box gasketPTFE, carbon-filled
8Centering ringPTFE, glass-reinforced
Stainless steel
9End pieceStainless steel
1.4409
10LeverStainless steel
*Seats in other material on request, such as glass-reinforced PTFE or PEEK.

Function and Design

Three-piece ball valve in antistatic design for simple service and maintenance.
No disassembling or changing of gaskets is necessary when the valve is welded in.
Homogenous floating ball for tight shut-off and low pressure drop.
Self-compensating stem packing gives a tight valve also 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 from DN50 have round body and end piece.

Technical Information

Pressure and temperature, valves with full bore 3505, 3525
Seat material8-2532-4050-100
Standard, carbon filled PTFE 25%Max. working pressure bar(e)*125 (T ≤ 50°C)100 (T ≤ 80°C)70 (T ≤ 80°C)

Max. temperature °C**205 (P ≤ 10 bar)205 (P ≤ 10 bar)200 (P ≤ 10 bar)
PEEKMax. working pressure bar(e)*125 (T ≤ 100°C)100 (T ≤ 100°C)70 (T ≤ 100°C)
Max. temperature °C**250 (P ≤ 10 bar)245 (P ≤ 10 bar)235 (P ≤ 10 bar)
PTFE, glass-reinforcedMax. working pressure bar(e)*
Max. temperature °C**

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

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

**Max temperature °C up to the specified pressure.

Torque

Torque
DN8101520253240506580100
Nm9911121928375268100112

Torque above applies for: Carbon filled PTFE, PEEK and glass-reinforced PTFE.

Kvs value

Kv-value
DN8101520253240506580100
KVS6,96,912,729,248,273,1107,5215,0275,2498,8877,2

AT3505 meassurements welded ends

AT 3505 Meassurements weld ends
DN8101520253240506580100
Dy13,517,221,326,933,742,448,360,376,188,9114,3
Di10,314,018,123,729,738,444,355,170,983,7109,1
Material thickness1,61,61,61,62,02,02,02,62,62,62,6

Measurements internal threads

AT 3525 Measurements BSP threads
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 3940, AT 3941, AT 3910, AT 3911). Can also be supplied with stem extensions and dead-mens handle (open or close).

Other ends available:

Weld ends:

  • SMS3008
  • DIN/SCH40
  • Costumer specific weld ends on request


Threaded ends:

  • NPT
  • BSPT

Special executions:

  • Firesafe acc. API607 and ISO 10497
  • Heating jacket
  • V-port ball with 30, 60 or 90 degree angle.

Installation

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

Maintenance and Spare parts

The valve construction permit a simple exchanging of all parts. See separate installation- and maintenance instructions.

Marking

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

How to order

DNAT 3505, weld endsAT 3525, threads
Article No.Article No.

How to order cont.

Options:

Seals:

FS = Fire-safe

GF = 25% glass-filled PTFE

PEEK = Seats in PEEK-material

See separate Pressure/temperature diagrams for differents seats.

Connections:

DIN = Weld ends acc. DIN/SCH40

SMS = Weld ends acc. SMS3008

NPT = NPT-threads

Exemple:

AT 3500-25FS (Fire-safe execution)

AT 3500-25GF (Seats of glass-filled PTFE)

AT 3520-25PEEK (Seats of PEEK)

AT 3500-25DIN (Weld ends acc. DIN3239, 1 and 2)

AT 3500-25SMS (Weld ends acc. SMS3008 )

AT 3520-25NPT (NPT-threads)

Accessories

Electric actuator AT 3941 (100-800 Nm)

Electric actuator for on/off or control of ball valves, butterfly or where a 90° rotation is required.

Select

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°…

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Actuator AT 3830

Pneumatic double acting actuators for on-off and control of ball valves and butterfly or where 90°…

Select

Pneumatic Actuator AT 3831

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

Select