Concept

The Unique Single Seat Aseptic valve meets the highest demands of your process in terms of hygiene and safety. Built on the well-proven Unique SSV platform it features a one-piece diaphragm to ensure hermetic sealing towards the atmosphere. The valve is designed for aseptic processing and it is available as a shut-off valve with two (2) or three (3) ports or as a change-over valve with three (3) to five (5) ports.

Working principle

The valve is a pneumatic seat valve in a hygienic and modular design remote-controlled by means of compressed air. It has few and simple moveable parts which results in a very reliable valve and low maintenance cost. An integrated valve plug/diaphragm secures aseptic operation.

Standard Design

The Unique SSV Aseptic valve comes in a one or two body configuration. With its module built structure it is designed for flexibility and easy customization through the electronic configurator. The valve features an optimized life span of the seals through a defined compression design. The actuator is connected to the valve body using a yoke and all components are assembled with clamp rings.

TECHNICAL DATA

Temperature

Temperature range: -10°C to +140°C (EPDM)

Pressure

Pressure range: 0-800 kPa (0-8 bar)

Max. sterilization temperature 150°C/380 kPa (3.8 bar)

Air pressure: 500-700 kPa (5-7 bar)

Note! Vacuum is not recommended in aseptic applications.

Valve body combinations

Actuator function

- Pneumatic downward movement, spring return (NO).

- Pneumatic upward movement, spring return (NC).

- Pneumatic upward and downward movement (A/A).

PHYSICAL DATA

Materials

Product wetted steel parts: . . . 1.4404 (316L)

Other steel parts: . . . . . . . . . 1.4301 (304)

External surface finish: . . . . . .Semi-bright (blasted)

Internal surface finish: . . . . . .Bright (polished), Ra < 0.8 μm

Product wetted seal . . . . . . .EPDM

Other seals: . . . . . . . . . . . . .NBR

Diaphragm . . . . . . . . . . . . .PTFE (Product wetted side) / EPDM

Options

A. Male parts or clamp liners in accordance with required standard.

B. Control and Indication: IndiTop, ThinkTop or ThinkTop Basic.

C. Product wetted seals in HNBR or FPM.

D. Low pressure actuator.

E. High product pressure actuator.

F. Maintainable actuator.

G. 2 step / 3 position actuator (not for DN/OD 25 / DN 25).

H. External surface bright.

Note!

For further details, see instruction ESE00529.

Other valves in the same basic design The Unique SSV valve range includes several purpose built valves. Below are some of the valve models available, though please use the Alfa Laval computer aided selection tool (CAS) for full access to all models and options.

- Manually operated valve.

- Two Step valve.

- Tangentialvalve.

- TankOutletvalve.

The actuator comes with a 5 years warranty

Dimensions (mm)

1) For exact A1 - A4 dimensions, please refer to informations in CAS.

Shut-off valve Change-over valve

Please note!

Opening/closing time will be affected by the following:

- The air supply (air pressure).

- Thelengthand dimensions of the air hoses.

- Numberofvalves connected to the same air hose.

- Use of single solenoid valve for serial connected air actuator functions.

- Productpressure.

Air Connections Compressed air:

2) R 1/8" (BSP), internal thread.