Page 203 - Bürkert

2/2-way Quarter-Turn Ball Valve in stainless steel with
pneumatic rotary actuator

2652 / 2655 • 2 or 3-piece ball valve

• Pneumatic actuator
• Compact design
• Optical position indicator 2 (A)
1 (P)
• Control valve connection acc. to
NAMUR 2 (A) 3-piece
2-piece (2655)
(2652)
1 (P)

The ball valves of Types 2652 and 2655 consist of a pneumatic rotary Envelope Dimensions [mm]
actuator (Type 2050) and a 2/2-way ball valve. The ball valve body is (Dimensions for Type 2652 see data sheet)
2-piece (Type 2652) or 3-piece (Type 2655). The connection between
the actuator and the ball valve takes place via a standard interface
(flange connection).

The rotary movement in the actuator is produced by a linear piston with A
quick-acting screw thread coupling. The rotary actuator moves the ball
valve through 90° and thus opens or closes the line cross-section.
A
The actuator has an optical display of the piston position.

The compact, pneumatically actuated ball valve can be employed for a
B
wide range of applications, even under heavy-duty, slightly aggressive
conditions.
B
C
Technical Data
Orifice DN10-50 mm 2-piece
Body material Stainless steel 1.4408 (2652) C
Actuator material PA (polyamide, glass-fibre reinforced)
Control air connection material Stainless steel 1.4305 3-piece
Seal material PTFE (2655)
Medium Gaseous and liquid medium, which do not
attack the body and seal materials
Medium temperature -10 to +120°C
Ambient temperature -10 to +60 °C DN A (Actuator size) B (Actuator size) C
Control medium Neutral gases; air [mm] Ø 63 mm Ø 100 mm Ø 63 mm Ø 100 mm
Port connection Threaded port G 1/4” to G 2”
10 79.6 126.6 201 275 65
Pilot pressure
Double acting actuator 2 to 10 bar (Ø 63 mm), 2 to 6 bar (Ø 100 mm) 12 79.6 126.6 201 275 65
Single acting actuator 5 to 10 bar (Ø 63 mm), 5 to 6 bar (Ø 100 mm) 15 79.6 126.6 201 275 75
Connection 20 79.6 126.6 205 279 80
between actuator and ball valve Flange acc. to ISO 5211 or DIN 3337 25 79.6 126.6 204.5 278.5 90
Rotation 90° ±3° 32 – 126.6 – 284.5 110
Rotation time for 90° 1 to 3.5 s 40 – 126.6 – 294.5 120
(depending on load and pilot pressure) 50 – 126.6 – 303.5 140
Installation As required, preferably with actuator in upright
position

Options
• Control head Type 8631
• Electrical position feedback Type 1062

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