Alfa Laval Unique SSV Tank Outlet

The Unique Single Seat Tank Outlet valve meets the highest demands of your process in terms of hygiene and safety. Built on the well-proven Unique SSV platform it is suitable for a wide field of applications, e.g. as a shut-off version closing up against the tank or as a reverse acting valve opening into the tank.

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.

Standard design

The Unique SSV Tank Outlet valve comes in a one body configuration, which can be delivered with or without a tank flange. 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. The body can be turned in any position if the clamps are slightly loosened. The tank flange is welded directly into the tank.

Technical Data

Temperature

Max. product pressure in tank: 1000 kPa (10 bar) if max. 20°C
. . . . . . . . . . . . . . . . . . . . 850 kPa (8.5 bar) if max. 100°C
. . . . . . . . . . . . . . . . . . . . 750 kPa (7.5 bar) if max. 150°C
Temperature range: . . . . . . . . -10°C to +140°C (EPDM)

Pressure

Max. product pressure in pipeline: . . . . . . . . . . . . . . . 1000 kPa (10 bar)
Min. product pressure: . . . . . Full vacuum
Air pressure: . . . . . . . . . . . . 500 to 700 kPa (5 to 7 bar)

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

Options

A. Male parts or clamp liners in accordance with required standard.
B. Weld ends or connection types other than Tri-Clamp
C. Control and Indication: IndiTop, ThinkTop or ThinkTop Basic.
D. Product wetted seals in HNBR or FPM.
E. Plug seals HNBR, FPM or TR2 plug (floating PTFE design).
F. High pressure actuator.
G. Long stroke actuator (not available for Reverse Acting version).
H. Maintainable actuator.
I. External surface finish bright.
Note! For further details, see instruction ESE00305.

Other valves in the same basic design
The 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 (Anytime configurator) for full access to all models and options.
– Reverse acting valve.
– Long stroke valve.
– Manually operated valve.
– Aseptic valve.
– Tangential valve.
The actuator comes with a 5 years warranty.

Dimensions (mm)

A1= min. Installation measure to allow that valve can be lifted out of the tank flange / valve body (if Indication Unit is mounted, height must be added)
1) For exact A1 – A4 dimensions, please refer to informations in Anytime configurator.

Please note!

Opening/closing time will be affected by the following:

– The air supply (air pressure).
– The length and dimensions of the air hoses.
– Number of valves connected to the same air hose.
– Use of single solenoid valve for serial connected air actuator functions.
– Product pressure.

Air Connections Compressed air:

R 1/8″ (BSP), internal thread.

 

Pressure drop/capacity diagrams

Note!
For the diagrams the following applies:
Medium: Water (20°C)
Measurement: In accordance with VDI2173
Pressure drop can also be calculated in Anytime configurator.

Pressure drop can also be calculated with the following formula:
Q = Kv x √∆p
Where
Q = Flow in m3/h.
Kv = m3/h at a pressure drop of 1 bar (see table above).
∆ p = Pressure drop in bar over the valve.
Where
Q = Flow in m3/h.
Kv = m3/h at a pressure drop of 1 bar (see table above).
∆ p = Pressure drop in bar over the valve.
2.5″ shut-off valve, where Kv = 111 (See table above).
Q = Kv x √∆p
40 = 111 x √∆p

Pressure data for Unique Single Seat Valve Tank Outlet