Concept

The Unique Single Seat valve meets the highest demands of your

process in terms of hygiene and safety. It is built on a well-proven

platform, from an installed base of more than one million valves.

Working principle

The manual regulated Unique Single Seat Valve is a regulating valve

used for manual control of pressure and flow. The valves permit

gradual opening and the few and simple moving parts result in very

reliable valves easy to dismantle. The plug can be fixed in the adjusted

position with a lock screw. The valve is based on the modular platform

of the Unique Single Seat Valve.

Standard Design

The manual operated valve can easily be converted to a pneumatic

operated valve by replacing the crank mechanism with an Unique

Single Seat Valve actuator. The other parts are identical.

TECHNICAL DATA

Temperature

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

Pressure

Max product pressure: . . . . . . . . . . . 1000 kPa (10 bar)

Min. product pressure: . . . . . . . . . . Full vacuum

Pressure drop/capacity diagrams:

The same as Unique Single Seat Valve.

Valve Body Combinations

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

Other product wetted seals . . . . . . . . EPDM

Options

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

B. Product wetted seals in HNBR or FPM.

C. Plug seal HNBR, FPM or TR2 plug (floating PTFE design - only for

Manual Operated Valve).

D. External surface finish bright.

Note

For further details, see instruction ESE00307.

Other valves in the same basic design

The Unique SSV valve range includes several purpose built valves.

Below listed 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.

- Standardvalve.

- Reverse acting valve.

- Aseptic valve.

- Long Stroke valve.

- TankOutletvalve.

The actuator comes with a 5 years warranty

Dimensions

Dimensions (mm) - Unique Manually Operated Valves

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